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CX2SA > SATDIG 24.04.09 02:25l 2068 Lines 43904 Bytes #999 (0) @ WW
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Today's Topics:
1. Re: Cross Boom (MM)
2. Re: Cross Boom (Joe)
3. Re: Cross Boom (MM)
4. Re: Cross Boom (Jim Jerzycke)
5. A little OT: The Great Brazilian Sat-Hack Crackdown (Glenn AA5PK)
6. Re: A little OT: The Great Brazilian Sat-Hack Crackdown
(Nigel Gunn G8IFF/W8IFF)
7. Re: A little OT: The Great Brazilian Sat-Hack Crackdown
(Glenn AA5PK)
----------------------------------------------------------------------
Message: 1
Date: Thu, 23 Apr 2009 14:57:18 -0700 (PDT)
From: MM <ka1rrw@xxxxx.xxx>
Subject: [amsat-bb] Re: Cross Boom
To: Jeff Yanko <wb3jfs@xxx.xxx>, Joe <nss@xxx.xxx>, Billy Simpkins
<bsimpkins31@xxxxxxxx.xxx>, Edward Cole <kl7uw@xxxxxxxxx.xxx>,
kq6ea@xxxxxxx.xxx
Cc: amsat-bb@xxxxx.xxx
Message-ID: <217427.67338.qm@xxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=utf-8
Thanks for all of the good information.
I am going to rebuild my Sat array this spring (its time for a routine
overhaul).
I have a M2 436CP42UG and the M2 CP22 at opposite ends of a 12? (1.25?) solid
fiberglass pole. I am converting over to a 1.5? sold 14-foot fiberglass pole
to give me better clearance for other antennas on the tower.
Kenpro 5500 AZ/EL
I never liked hanging the coax off the back since is throws off the balance.
When you slide the U-clamps Backward on the M2 boom to compensate for the coax
weight on the back, you end up with the clamps on Thinner section of the Boom.
Based on the theories, if I follow the coax routing and avoid the half or full
wave points I may be able to run the coax down the boom?
Would this work on the 70 cm too?
Thanks Miles
--- On Thu, 4/23/09, Jim Jerzycke <kq6ea@xxxxxxx.xxx> wrote:
> From: Jim Jerzycke <kq6ea@xxxxxxx.xxx>
> Subject: [amsat-bb] Re: Cross Boom
> To: "Jeff Yanko" <wb3jfs@xxx.xxx>, "Joe" <nss@xxx.xxx>, "Billy Simpkins"
<bsimpkins31@xxxxxxxx.xxx>, "Edward Cole" <kl7uw@xxxxxxxxx.xxx>
> Cc: amsat-bb@xxxxx.xxx
> Date: Thursday, April 23, 2009, 1:41 AM
> It's here on Howard's site:
> http://www.g6lvb.com/fibermetalboom.htm
>
>
> --- On Wed, 4/22/09, Edward Cole
> <kl7uw@xxxxxxxxx.xxx> wrote:
>
> > From: Edward Cole <kl7uw@xxxxxxxxx.xxx>
> > Subject: Re: [amsat-bb] Re: Cross Boom
> > To: "Jeff Yanko" <wb3jfs@xxx.xxx>,
> kq6ea@xxxxxxx.xxxx "Joe" <nss@xxx.xxx>,
> "Billy Simpkins" <bsimpkins31@xxxxxxxx.xxx>
> > Cc: amsat-bb@xxxxx.xxx
> > Date: Wednesday, April 22, 2009, 10:39 PM
> > The coax shield coming off the antenna boom at a right
> angle
> > looks
> > like another parasitic element being added to the
> antenna
> > causing
> > severe distortion of the antenna pattern. But if one
> > installs the
> > antenna in the X configuration and attach the cross
> boom in
> > a
> > location away from any of the elements one can tightly
> run
> > the coax
> > across the metallic cross boom with little effect.
> This
> > was tested
> > by WA5VJB and is a published article.
> >
> > I have my M2 436CP42UG mounted in this fashion and it
> > preforms well.
> >
> > 73, Ed - KL7UW
> > maybe someone else can point to the link to that
> article.
> >
> > At 11:41 AM 4/22/2009, Jeff Yanko wrote:
> > >OK, I see where this is coming into play. So
> it's
> > possible that the coax
> > >shield could react to the feedpoint system and
> pattern.
> > Now this raises a
> > >question. If this is the case, has anybody tried
> a
> > broadband choke balun to
> > >limit this potential problem? If you think about
> it,
> > the bigger issue with
> > >coax effecting the radiation pattern is improper
> > decoupling of the fed
> > >point. If the outside shield is hot with RF it
> will
> > radiated and effect the
> > >pattern big time. If the coax is properly
> decoupled at
> > the fed point the
> > >outside shield will ideally have zero rf current
> on it
> > and ideally have no
> > >impact on the pattern.
> > >
> > >Thoughts?
> > >
> > >
> > >73,
> > >
> > >Jeff WB3JFS
> > >
> > >
> > >----- Original Message -----
> > >From: "Jim Jerzycke"
> > <kq6ea@xxxxxxx.xxx>
> > >To: "Joe" <nss@xxx.xxx>;
> "Billy
> > Simpkins" <bsimpkins31@xxxxxxxx.xxx>;
> "Jeff
> > >Yanko" <wb3jfs@xxx.xxx>
> > >Cc: <amsat-bb@xxxxx.xxx>
> > >Sent: Wednesday, April 22, 2009 11:09 AM
> > >Subject: Re: [amsat-bb] Re: Cross Boom
> > >
> > >
> > > >
> > > > Because the shield of the coax
> "looks"
> > like a piece of pipe, and has the
> > > > same effect on the antenna pattern that
> > you're trying to eliminate by
> > > > going to a non-metallic cross-boom.
> > > > Jim KQ6EA
> > > >
> > > >
> > > > --- On Wed, 4/22/09, Jeff Yanko
> > <wb3jfs@xxx.xxx> wrote:
> > > >
> > > >> From: Jeff Yanko <wb3jfs@xxx.xxx>
> > > >> Subject: [amsat-bb] Re: Cross Boom
> > > >> To: "Joe" <nss@xxx.xxx>,
> > "Billy Simpkins"
> <bsimpkins31@xxxxxxxx.xxx>
> > > >> Cc: amsat-bb@xxxxx.xxx
> > > >> Date: Wednesday, April 22, 2009, 10:55
> AM
> > > >> Hi all,
> > > >> I found this line confusing....
> > > >>
> > > >> "But then if you go insulated
> then do
> > not run the
> > > >> feedline along it either
> > > >> or you just defeated the purpose of the
> > insulated
> > > >> boom."
> > > >>
> > > >> My question is if you run the coax along
> an
> > insulated
> > > >> crossboom, ie.
> > > >> fiberglass, how could that affect the
> > coupling of the
> > > >> transmission line when
> > > >> the object it is being attached to is
> > > >> "insulated"?
> > > >>
> > > >>
> > > >> 73,
> > > >>
> > > >> Jeff WB3JFS
> > > >>
> > > >>
> > > >>
> > > >>
> > > >>
> > > >> ----- Original Message -----
> > > >> From: "Joe"
> <nss@xxx.xxx>
> > > >> To: "Billy Simpkins"
> > > >> <bsimpkins31@xxxxxxxx.xxx>
> > > >> Cc: <amsat-bb@xxxxx.xxx>
> > > >> Sent: Wednesday, April 22, 2009 7:06 AM
> > > >> Subject: [amsat-bb] Re: Cross Boom
> > > >>
> > > >>
> > > >> > It all depends on how the elements
> are
> > mounted.
> > > >> >
> > > >> > If at 45 to 90 degrees from the
> > crossarm, no propblem
> > > >> and use anything,
> > > >> >
> > > >> > But if in the same plane then need
> > insulated
> > > >> crossboom,
> > > >> >
> > > >> > But then if you go insulated then
> do
> > not run the
> > > >> feedline along it
> > > >> > either or you just defeated the
> purpose
> > of the
> > > >> insulated boom.
> > > >> >
> > > >> > Billy Simpkins wrote:
> > > >> >
> > > >> >>Is a fiber glass or some other
> > non-conductive
> > > >> material necessary for a
> > > >> >>cross boom? What or the
> advantages
> > and
> > > >> disadvantages versus a metal one?
> > > >> >>
> > > >> >>Thanks,
> > > >> >>Billy KF0CK
> > > >>
> >
> >>_______________________________________________
> > > >> >>Sent via AMSAT-BB@xxxxx.xxx.
> Opinions
> > expressed are
> > > >> those of the author.
> > > >> >>Not an AMSAT-NA member? Join now
> to
> > support the
> > > >> amateur satellite program!
> > > >> >>Subscription settings:
> > > >>
> http://amsat.org/mailman/listinfo/amsat-bb
> > > >> >>
> > > >> >>
> > > >> >>
> > > >> >>
> > > >> >
> > _______________________________________________
> > > >> > Sent via AMSAT-BB@xxxxx.xxx.
> Opinions
> > expressed are
> > > >> those of the author.
> > > >> > Not an AMSAT-NA member? Join now to
> > support the
> > > >> amateur satellite program!
> > > >> > Subscription settings:
> > > >>
> http://amsat.org/mailman/listinfo/amsat-bb
> > > >> >
> > > >>
> > > >>
> > > >>
> > _______________________________________________
> > > >> Sent via AMSAT-BB@xxxxx.xxx. Opinions
> > expressed are those
> > > >> of the author.
> > > >> Not an AMSAT-NA member? Join now to
> support
> > the amateur
> > > >> satellite program!
> > > >> Subscription settings:
> > > >>
> http://amsat.org/mailman/listinfo/amsat-bb
> > > >
> > >
> > >
> > >_______________________________________________
> > >Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed
> are
> > those of the author.
> > >Not an AMSAT-NA member? Join now to support the
> amateur
> > satellite program!
> > >Subscription settings:
> > http://amsat.org/mailman/listinfo/amsat-bb
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those
> of the author.
> Not an AMSAT-NA member? Join now to support the amateur
> satellite program!
> Subscription settings:
> http://amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 2
Date: Thu, 23 Apr 2009 17:43:28 -0500
From: Joe <nss@xxx.xxx>
Subject: [amsat-bb] Re: Cross Boom
To: ka1rrw@xxxxx.xxx
Cc: amsat-bb@xxxxx.xxxx kq6ea@xxxxxxx.xxx
Message-ID: <49F0EF10.7010007@xxx.xxx>
Content-Type: text/plain; charset=UTF-8; format=flowed
Just follow the suggestions on the web page that was suggested and
you'll be fine.
But I am curious as to where did you find the 1.25" fiberglass riod?
Joe
MM wrote:
>
>Thanks for all of the good information.
>
>I am going to rebuild my Sat array this spring (its time for a routine
overhaul).
>I have a M2 436CP42UG and the M2 CP22 at opposite ends of a 12? (1.25?) solid
fiberglass pole. I am converting over to a 1.5? sold 14-foot fiberglass pole
to give me better clearance for other antennas on the tower.
>Kenpro 5500 AZ/EL
>
>I never liked hanging the coax off the back since is throws off the balance.
>When you slide the U-clamps Backward on the M2 boom to compensate for the
coax weight on the back, you end up with the clamps on Thinner section of the
Boom.
>
>Based on the theories, if I follow the coax routing and avoid the half or
full wave points I may be able to run the coax down the boom?
>
>Would this work on the 70 cm too?
>
>Thanks Miles
>
>
>--- On Thu, 4/23/09, Jim Jerzycke <kq6ea@xxxxxxx.xxx> wrote:
>
>
>
>>From: Jim Jerzycke <kq6ea@xxxxxxx.xxx>
>>Subject: [amsat-bb] Re: Cross Boom
>>To: "Jeff Yanko" <wb3jfs@xxx.xxx>, "Joe" <nss@xxx.xxx>, "Billy Simpkins"
<bsimpkins31@xxxxxxxx.xxx>, "Edward Cole" <kl7uw@xxxxxxxxx.xxx>
>>Cc: amsat-bb@xxxxx.xxx
>>Date: Thursday, April 23, 2009, 1:41 AM
>>It's here on Howard's site:
>>http://www.g6lvb.com/fibermetalboom.htm
>>
>>
>>--- On Wed, 4/22/09, Edward Cole
>><kl7uw@xxxxxxxxx.xxx> wrote:
>>
>>
>>
>>>From: Edward Cole <kl7uw@xxxxxxxxx.xxx>
>>>Subject: Re: [amsat-bb] Re: Cross Boom
>>>To: "Jeff Yanko" <wb3jfs@xxx.xxx>,
>>>
>>>
>>kq6ea@xxxxxxx.xxxx "Joe" <nss@xxx.xxx>,
>>"Billy Simpkins" <bsimpkins31@xxxxxxxx.xxx>
>>
>>
>>>Cc: amsat-bb@xxxxx.xxx
>>>Date: Wednesday, April 22, 2009, 10:39 PM
>>>The coax shield coming off the antenna boom at a right
>>>
>>>
>>angle
>>
>>
>>>looks
>>>like another parasitic element being added to the
>>>
>>>
>>antenna
>>
>>
>>>causing
>>>severe distortion of the antenna pattern. But if one
>>>installs the
>>>antenna in the X configuration and attach the cross
>>>
>>>
>>boom in
>>
>>
>>>a
>>>location away from any of the elements one can tightly
>>>
>>>
>>run
>>
>>
>>>the coax
>>>across the metallic cross boom with little effect.
>>>
>>>
>>This
>>
>>
>>>was tested
>>>by WA5VJB and is a published article.
>>>
>>>I have my M2 436CP42UG mounted in this fashion and it
>>>preforms well.
>>>
>>>73, Ed - KL7UW
>>>maybe someone else can point to the link to that
>>>
>>>
>>article.
>>
>>
>>>At 11:41 AM 4/22/2009, Jeff Yanko wrote:
>>>
>>>
>>>>OK, I see where this is coming into play. So
>>>>
>>>>
>>it's
>>
>>
>>>possible that the coax
>>>
>>>
>>>>shield could react to the feedpoint system and
>>>>
>>>>
>>pattern.
>>
>>
>>> Now this raises a
>>>
>>>
>>>>question. If this is the case, has anybody tried
>>>>
>>>>
>>a
>>
>>
>>>broadband choke balun to
>>>
>>>
>>>>limit this potential problem? If you think about
>>>>
>>>>
>>it,
>>
>>
>>>the bigger issue with
>>>
>>>
>>>>coax effecting the radiation pattern is improper
>>>>
>>>>
>>>decoupling of the fed
>>>
>>>
>>>>point. If the outside shield is hot with RF it
>>>>
>>>>
>>will
>>
>>
>>>radiated and effect the
>>>
>>>
>>>>pattern big time. If the coax is properly
>>>>
>>>>
>>decoupled at
>>
>>
>>>the fed point the
>>>
>>>
>>>>outside shield will ideally have zero rf current
>>>>
>>>>
>>on it
>>
>>
>>>and ideally have no
>>>
>>>
>>>>impact on the pattern.
>>>>
>>>>Thoughts?
>>>>
>>>>
>>>>73,
>>>>
>>>>Jeff WB3JFS
>>>>
>>>>
>>>>----- Original Message -----
>>>>From: "Jim Jerzycke"
>>>>
>>>>
>>><kq6ea@xxxxxxx.xxx>
>>>
>>>
>>>>To: "Joe" <nss@xxx.xxx>;
>>>>
>>>>
>>"Billy
>>
>>
>>>Simpkins" <bsimpkins31@xxxxxxxx.xxx>;
>>>
>>>
>>"Jeff
>>
>>
>>>>Yanko" <wb3jfs@xxx.xxx>
>>>>Cc: <amsat-bb@xxxxx.xxx>
>>>>Sent: Wednesday, April 22, 2009 11:09 AM
>>>>Subject: Re: [amsat-bb] Re: Cross Boom
>>>>
>>>>
>>>>
>>>>
>>>>>Because the shield of the coax
>>>>>
>>>>>
>>"looks"
>>
>>
>>>like a piece of pipe, and has the
>>>
>>>
>>>>>same effect on the antenna pattern that
>>>>>
>>>>>
>>>you're trying to eliminate by
>>>
>>>
>>>>>going to a non-metallic cross-boom.
>>>>>Jim KQ6EA
>>>>>
>>>>>
>>>>>--- On Wed, 4/22/09, Jeff Yanko
>>>>>
>>>>>
>>><wb3jfs@xxx.xxx> wrote:
>>>
>>>
>>>>>>From: Jeff Yanko <wb3jfs@xxx.xxx>
>>>>>>Subject: [amsat-bb] Re: Cross Boom
>>>>>>To: "Joe" <nss@xxx.xxx>,
>>>>>>
>>>>>>
>>>"Billy Simpkins"
>>>
>>>
>><bsimpkins31@xxxxxxxx.xxx>
>>
>>
>>>>>>Cc: amsat-bb@xxxxx.xxx
>>>>>>Date: Wednesday, April 22, 2009, 10:55
>>>>>>
>>>>>>
>>AM
>>
>>
>>>>>>Hi all,
>>>>>> I found this line confusing....
>>>>>>
>>>>>>"But then if you go insulated
>>>>>>
>>>>>>
>>then do
>>
>>
>>>not run the
>>>
>>>
>>>>>>feedline along it either
>>>>>>or you just defeated the purpose of the
>>>>>>
>>>>>>
>>>insulated
>>>
>>>
>>>>>>boom."
>>>>>>
>>>>>>My question is if you run the coax along
>>>>>>
>>>>>>
>>an
>>
>>
>>>insulated
>>>
>>>
>>>>>>crossboom, ie.
>>>>>>fiberglass, how could that affect the
>>>>>>
>>>>>>
>>>coupling of the
>>>
>>>
>>>>>>transmission line when
>>>>>>the object it is being attached to is
>>>>>>"insulated"?
>>>>>>
>>>>>>
>>>>>>73,
>>>>>>
>>>>>>Jeff WB3JFS
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>----- Original Message -----
>>>>>>From: "Joe"
>>>>>>
>>>>>>
>><nss@xxx.xxx>
>>
>>
>>>>>>To: "Billy Simpkins"
>>>>>><bsimpkins31@xxxxxxxx.xxx>
>>>>>>Cc: <amsat-bb@xxxxx.xxx>
>>>>>>Sent: Wednesday, April 22, 2009 7:06 AM
>>>>>>Subject: [amsat-bb] Re: Cross Boom
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>>It all depends on how the elements
>>>>>>>
>>>>>>>
>>are
>>
>>
>>>mounted.
>>>
>>>
>>>>>>>If at 45 to 90 degrees from the
>>>>>>>
>>>>>>>
>>>crossarm, no propblem
>>>
>>>
>>>>>>and use anything,
>>>>>>
>>>>>>
>>>>>>>But if in the same plane then need
>>>>>>>
>>>>>>>
>>>insulated
>>>
>>>
>>>>>>crossboom,
>>>>>>
>>>>>>
>>>>>>>But then if you go insulated then
>>>>>>>
>>>>>>>
>>do
>>
>>
>>>not run the
>>>
>>>
>>>>>>feedline along it
>>>>>>
>>>>>>
>>>>>>>either or you just defeated the
>>>>>>>
>>>>>>>
>>purpose
>>
>>
>>>of the
>>>
>>>
>>>>>>insulated boom.
>>>>>>
>>>>>>
>>>>>>>Billy Simpkins wrote:
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>>Is a fiber glass or some other
>>>>>>>>
>>>>>>>>
>>>non-conductive
>>>
>>>
>>>>>>material necessary for a
>>>>>>
>>>>>>
>>>>>>>>cross boom? What or the
>>>>>>>>
>>>>>>>>
>>advantages
>>
>>
>>>and
>>>
>>>
>>>>>>disadvantages versus a metal one?
>>>>>>
>>>>>>
>>>>>>>>Thanks,
>>>>>>>>Billy KF0CK
>>>>>>>>
>>>>>>>>
>>>>_______________________________________________
>>>>
>>>>
>>>>>>>>Sent via AMSAT-BB@xxxxx.xxx.
>>>>>>>>
>>>>>>>>
>>Opinions
>>
>>
>>>expressed are
>>>
>>>
>>>>>>those of the author.
>>>>>>
>>>>>>
>>>>>>>>Not an AMSAT-NA member? Join now
>>>>>>>>
>>>>>>>>
>>to
>>
>>
>>>support the
>>>
>>>
>>>>>>amateur satellite program!
>>>>>>
>>>>>>
>>>>>>>>Subscription settings:
>>>>>>>>
>>>>>>>>
>>http://amsat.org/mailman/listinfo/amsat-bb
>>
>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>_______________________________________________
>>>
>>>
>>>>>>>Sent via AMSAT-BB@xxxxx.xxx.
>>>>>>>
>>>>>>>
>>Opinions
>>
>>
>>>expressed are
>>>
>>>
>>>>>>those of the author.
>>>>>>
>>>>>>
>>>>>>>Not an AMSAT-NA member? Join now to
>>>>>>>
>>>>>>>
>>>support the
>>>
>>>
>>>>>>amateur satellite program!
>>>>>>
>>>>>>
>>>>>>>Subscription settings:
>>>>>>>
>>>>>>>
>>http://amsat.org/mailman/listinfo/amsat-bb
>>
>>
>>>>>>
>>>>>>
>>>>>>
>>>_______________________________________________
>>>
>>>
>>>>>>Sent via AMSAT-BB@xxxxx.xxx. Opinions
>>>>>>
>>>>>>
>>>expressed are those
>>>
>>>
>>>>>>of the author.
>>>>>>Not an AMSAT-NA member? Join now to
>>>>>>
>>>>>>
>>support
>>
>>
>>>the amateur
>>>
>>>
>>>>>>satellite program!
>>>>>>Subscription settings:
>>>>>>
>>>>>>
>>>>>>
>>http://amsat.org/mailman/listinfo/amsat-bb
>>
>>
>>>>_______________________________________________
>>>>Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed
>>>>
>>>>
>>are
>>
>>
>>>those of the author.
>>>
>>>
>>>>Not an AMSAT-NA member? Join now to support the
>>>>
>>>>
>>amateur
>>
>>
>>>satellite program!
>>>
>>>
>>>>Subscription settings:
>>>>
>>>>
>>>http://amsat.org/mailman/listinfo/amsat-bb
>>>
>>>
>>_______________________________________________
>>Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those
>>of the author.
>>Not an AMSAT-NA member? Join now to support the amateur
>>satellite program!
>>Subscription settings:
>>http://amsat.org/mailman/listinfo/amsat-bb
>>
>>
>
>
>
>
>
>
>
------------------------------
Message: 3
Date: Thu, 23 Apr 2009 16:43:53 -0700 (PDT)
From: MM <ka1rrw@xxxxx.xxx>
Subject: [amsat-bb] Re: Cross Boom
To: Joe <nss@xxx.xxx>
Cc: amsat-bb@xxxxx.xxxx kq6ea@xxxxxxx.xxx
Message-ID: <886133.36224.qm@xxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=utf-8
Fiberglass solid.
I forgot who actually makes the rods, but i found a local deal that can get it
in 20 foot sections. I bought two 20 foot rods and sold off the extra
sections.
The cost is aprox $16.00 a foot.
the nice thing about solid is you do not need to worry about breaking or
crushing it.
Structural Shapes Rod
Class: thermocur rod
Major Material: Fiberglass
Minor Material: 1.5" solid rod
Outside Dimension: 1.50
Color: MILKY green
Resin Name: green
Length (Span for Grating): 240.000
Rick McCabe
Customer Service Team Leader
McNichols Company
45 Power Rd Westford, MA 01886-4111
978-692-4141 ext 227 (phone) | 978-692-0044 (fax)
rick.mccabe@xxxxxxxxx.xxx
www.mcnichols.com
--- On Thu, 4/23/09, Joe <nss@xxx.xxx> wrote:
> From: Joe <nss@xxx.xxx>
> Subject: Re: [amsat-bb] Re: Cross Boom
> To: ka1rrw@xxxxx.xxx
> Cc: "Jeff Yanko" <wb3jfs@xxx.xxx>, "Billy Simpkins"
<bsimpkins31@xxxxxxxx.xxx>, "Edward Cole" <kl7uw@xxxxxxxxx.xxx>,
kq6ea@xxxxxxx.xxxx amsat-bb@xxxxx.xxx
> Date: Thursday, April 23, 2009, 6:43 PM
> Just follow the suggestions on the web page that was
> suggested and you'll be fine.
>
> But I am curious as to where did you find the 1.25"
> fiberglass riod?
>
> Joe
>
> MM wrote:
>
> >
> > Thanks for all of the good information.
> >
> > I am going to rebuild my Sat array this spring (its
> time for a routine overhaul).
> > I have a M2 436CP42UG and the M2 CP22 at opposite ends
> of a 12? (1.25?) solid fiberglass pole. I am converting
> over to a 1.5? sold 14-foot fiberglass pole to give me
> better clearance for other antennas on the tower. Kenpro
> 5500 AZ/EL
> >
> > I never liked hanging the coax off the back since is
> throws off the balance.
> > When you slide the U-clamps Backward on the M2 boom to
> compensate for the coax weight on the back, you end up with
> the clamps on Thinner section of the Boom.
> >
> > Based on the theories, if I follow the coax routing
> and avoid the half or full wave points I may be able to run
> the coax down the boom?
> >
> > Would this work on the 70 cm too?
> >
> > Thanks Miles
> >
> >
> > --- On Thu, 4/23/09, Jim Jerzycke
> <kq6ea@xxxxxxx.xxx> wrote:
> >
> >
> >> From: Jim Jerzycke <kq6ea@xxxxxxx.xxx>
> >> Subject: [amsat-bb] Re: Cross Boom
> >> To: "Jeff Yanko" <wb3jfs@xxx.xxx>,
> "Joe" <nss@xxx.xxx>, "Billy
> Simpkins" <bsimpkins31@xxxxxxxx.xxx>,
> "Edward Cole" <kl7uw@xxxxxxxxx.xxx>
> >> Cc: amsat-bb@xxxxx.xxx
> >> Date: Thursday, April 23, 2009, 1:41 AM
> >> It's here on Howard's site:
> >> http://www.g6lvb.com/fibermetalboom.htm
> >>
> >>
> >> --- On Wed, 4/22/09, Edward Cole
> >> <kl7uw@xxxxxxxxx.xxx> wrote:
> >>
> >>
> >>> From: Edward Cole <kl7uw@xxxxxxxxx.xxx>
> >>> Subject: Re: [amsat-bb] Re: Cross Boom
> >>> To: "Jeff Yanko"
> <wb3jfs@xxx.xxx>,
> >>>
> >> kq6ea@xxxxxxx.xxxx "Joe"
> <nss@xxx.xxx>,
> >> "Billy Simpkins"
> <bsimpkins31@xxxxxxxx.xxx>
> >>
> >>> Cc: amsat-bb@xxxxx.xxx
> >>> Date: Wednesday, April 22, 2009, 10:39 PM
> >>> The coax shield coming off the antenna boom at
> a right
> >>>
> >> angle
> >>
> >>> looks like another parasitic element being
> added to the
> >>>
> >> antenna
> >>
> >>> causing severe distortion of the antenna
> pattern. But if one
> >>> installs the antenna in the X configuration
> and attach the cross
> >>>
> >> boom in
> >>
> >>> a location away from any of the elements one
> can tightly
> >>>
> >> run
> >>
> >>> the coax across the metallic cross boom with
> little effect.
> >> This
> >>
> >>> was tested by WA5VJB and is a published
> article.
> >>>
> >>> I have my M2 436CP42UG mounted in this fashion
> and it
> >>> preforms well.
> >>>
> >>> 73, Ed - KL7UW
> >>> maybe someone else can point to the link to
> that
> >>>
> >> article.
> >>
> >>> At 11:41 AM 4/22/2009, Jeff Yanko wrote:
> >>>
> >>>> OK, I see where this is coming into play.
> So
> >>>>
> >> it's
> >>
> >>> possible that the coax
> >>>
> >>>> shield could react to the feedpoint system
> and
> >>>>
> >> pattern.
> >>
> >>> Now this raises a
> >>>
> >>>> question. If this is the case, has
> anybody tried
> >>>>
> >> a
> >>
> >>> broadband choke balun to
> >>>
> >>>> limit this potential problem? If you
> think about
> >>>>
> >> it,
> >>
> >>> the bigger issue with
> >>>
> >>>> coax effecting the radiation pattern is
> improper
> >>>>
> >>> decoupling of the fed
> >>>
> >>>> point. If the outside shield is hot with
> RF it
> >>>>
> >> will
> >>
> >>> radiated and effect the
> >>>
> >>>> pattern big time. If the coax is properly
> >>>>
> >> decoupled at
> >>
> >>> the fed point the
> >>>
> >>>> outside shield will ideally have zero rf
> current
> >>>>
> >> on it
> >>
> >>> and ideally have no
> >>>
> >>>> impact on the pattern.
> >>>>
> >>>> Thoughts?
> >>>>
> >>>>
> >>>> 73,
> >>>>
> >>>> Jeff WB3JFS
> >>>>
> >>>>
> >>>> ----- Original Message -----
> >>>> From: "Jim Jerzycke"
> >>>>
> >>> <kq6ea@xxxxxxx.xxx>
> >>>
> >>>> To: "Joe" <nss@xxx.xxx>;
> >>>>
> >> "Billy
> >>
> >>> Simpkins"
> <bsimpkins31@xxxxxxxx.xxx>;
> >>>
> >> "Jeff
> >>
> >>>> Yanko" <wb3jfs@xxx.xxx>
> >>>> Cc: <amsat-bb@xxxxx.xxx>
> >>>> Sent: Wednesday, April 22, 2009 11:09 AM
> >>>> Subject: Re: [amsat-bb] Re: Cross Boom
> >>>>
> >>>>
> >>>>
> >>>>> Because the shield of the coax
> >>>>>
> >> "looks"
> >>
> >>> like a piece of pipe, and has the
> >>>
> >>>>> same effect on the antenna pattern
> that
> >>>>>
> >>> you're trying to eliminate by
> >>>
> >>>>> going to a non-metallic cross-boom.
> >>>>> Jim KQ6EA
> >>>>>
> >>>>>
> >>>>> --- On Wed, 4/22/09, Jeff Yanko
> >>>>>
> >>> <wb3jfs@xxx.xxx> wrote:
> >>>
> >>>>>> From: Jeff Yanko
> <wb3jfs@xxx.xxx>
> >>>>>> Subject: [amsat-bb] Re: Cross Boom
> >>>>>> To: "Joe"
> <nss@xxx.xxx>,
> >>>>>>
> >>> "Billy Simpkins"
> >>>
> >> <bsimpkins31@xxxxxxxx.xxx>
> >>
> >>>>>> Cc: amsat-bb@xxxxx.xxx
> >>>>>> Date: Wednesday, April 22, 2009,
> 10:55
> >>>>>>
> >> AM
> >>
> >>>>>> Hi all,
> >>>>>> I found this line confusing....
> >>>>>>
> >>>>>> "But then if you go
> insulated
> >> then do
> >>
> >>> not run the
> >>>
> >>>>>> feedline along it either
> >>>>>> or you just defeated the purpose
> of the
> >>>>>>
> >>> insulated
> >>>
> >>>>>> boom."
> >>>>>>
> >>>>>> My question is if you run the coax
> along
> >>>>>>
> >> an
> >>
> >>> insulated
> >>>
> >>>>>> crossboom, ie.
> >>>>>> fiberglass, how could that affect
> the
> >>>>>>
> >>> coupling of the
> >>>
> >>>>>> transmission line when
> >>>>>> the object it is being attached to
> is
> >>>>>> "insulated"?
> >>>>>>
> >>>>>>
> >>>>>> 73,
> >>>>>>
> >>>>>> Jeff WB3JFS
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>> ----- Original Message -----
> >>>>>> From: "Joe"
> >>>>>>
> >> <nss@xxx.xxx>
> >>
> >>>>>> To: "Billy Simpkins"
> >>>>>> <bsimpkins31@xxxxxxxx.xxx>
> >>>>>> Cc: <amsat-bb@xxxxx.xxx>
> >>>>>> Sent: Wednesday, April 22, 2009
> 7:06 AM
> >>>>>> Subject: [amsat-bb] Re: Cross Boom
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>> It all depends on how the
> elements
> >>>>>>>
> >> are
> >>
> >>> mounted.
> >>>
> >>>>>>> If at 45 to 90 degrees from
> the
> >>>>>>>
> >>> crossarm, no propblem
> >>>
> >>>>>> and use anything,
> >>>>>>
> >>>>>>> But if in the same plane then
> need
> >>>>>>>
> >>> insulated
> >>>
> >>>>>> crossboom,
> >>>>>>
> >>>>>>> But then if you go insulated
> then
> >>>>>>>
> >> do
> >>
> >>> not run the
> >>>
> >>>>>> feedline along it
> >>>>>>
> >>>>>>> either or you just defeated
> the
> >>>>>>>
> >> purpose
> >>
> >>> of the
> >>>
> >>>>>> insulated boom.
> >>>>>>
> >>>>>>> Billy Simpkins wrote:
> >>>>>>>
> >>>>>>>
> >>>>>>>> Is a fiber glass or some
> other
> >>>>>>>>
> >>> non-conductive
> >>>
> >>>>>> material necessary for a
> >>>>>>
> >>>>>>>> cross boom? What or the
> >>>>>>>>
> >> advantages
> >>
> >>> and
> >>>
> >>>>>> disadvantages versus a metal one?
> >>>>>>
> >>>>>>>> Thanks,
> >>>>>>>> Billy KF0CK
> >>>>>>>>
> >>>>
> _______________________________________________
> >>>>
> >>>>>>>> Sent via
> AMSAT-BB@xxxxx.xxx.
> >>>>>>>>
> >> Opinions
> >>
> >>> expressed are
> >>>
> >>>>>> those of the author.
> >>>>>>
> >>>>>>>> Not an AMSAT-NA member?
> Join now
> >>>>>>>>
> >> to
> >>
> >>> support the
> >>>
> >>>>>> amateur satellite program!
> >>>>>>
> >>>>>>>> Subscription settings:
> >>>>>>>>
> >> http://amsat.org/mailman/listinfo/amsat-bb
> >>
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>
> _______________________________________________
> >>>
> >>>>>>> Sent via AMSAT-BB@xxxxx.xxx.
> >>>>>>>
> >> Opinions
> >>
> >>> expressed are
> >>>
> >>>>>> those of the author.
> >>>>>>
> >>>>>>> Not an AMSAT-NA member? Join
> now to
> >>>>>>>
> >>> support the
> >>>
> >>>>>> amateur satellite program!
> >>>>>>
> >>>>>>> Subscription settings:
> >>>>>>>
> >> http://amsat.org/mailman/listinfo/amsat-bb
> >>
> >>>>>>
> >>>>>>
> >>>
> _______________________________________________
> >>>
> >>>>>> Sent via AMSAT-BB@xxxxx.xxx.
> Opinions
> >>>>>>
> >>> expressed are those
> >>>
> >>>>>> of the author.
> >>>>>> Not an AMSAT-NA member? Join now
> to
> >>>>>>
> >> support
> >>
> >>> the amateur
> >>>
> >>>>>> satellite program!
> >>>>>> Subscription settings:
> >>>>>>
> >>>>>>
> >> http://amsat.org/mailman/listinfo/amsat-bb
> >>
> >>>>
> _______________________________________________
> >>>> Sent via AMSAT-BB@xxxxx.xxx. Opinions
> expressed
> >>>>
> >> are
> >>
> >>> those of the author.
> >>>
> >>>> Not an AMSAT-NA member? Join now to
> support the
> >>>>
> >> amateur
> >>
> >>> satellite program!
> >>>
> >>>> Subscription settings:
> >>>>
> >>> http://amsat.org/mailman/listinfo/amsat-bb
> >>>
> >> _______________________________________________
> >> Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed
> are those
> >> of the author.
> >> Not an AMSAT-NA member? Join now to support the
> amateur
> >> satellite program!
> >> Subscription settings:
> >> http://amsat.org/mailman/listinfo/amsat-bb
> >>
> >
> >
> >
> >
> >
------------------------------
Message: 4
Date: Thu, 23 Apr 2009 16:56:44 -0700 (PDT)
From: Jim Jerzycke <kq6ea@xxxxxxx.xxx>
Subject: [amsat-bb] Re: Cross Boom
To: ka1rrw@xxxxx.xxxx Joe <nss@xxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Message-ID: <868869.93176.qm@xxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=utf-8
Max-Gain Systems sells it.
http://www.mgs4u.com/fiberglass-tube-rod.htm
--- On Thu, 4/23/09, Joe <nss@xxx.xxx> wrote:
> From: Joe <nss@xxx.xxx>
> Subject: Re: [amsat-bb] Re: Cross Boom
> To: ka1rrw@xxxxx.xxx
> Cc: "Jeff Yanko" <wb3jfs@xxx.xxx>, "Billy Simpkins"
<bsimpkins31@xxxxxxxx.xxx>, "Edward Cole" <kl7uw@xxxxxxxxx.xxx>,
kq6ea@xxxxxxx.xxxx amsat-bb@xxxxx.xxx
> Date: Thursday, April 23, 2009, 3:43 PM
> Just follow the suggestions on the web page that was
> suggested and you'll be fine.
>
> But I am curious as to where did you find the 1.25"
> fiberglass riod?
>
> Joe
>
> MM wrote:
>
> >
> > Thanks for all of the good information.
> >
> > I am going to rebuild my Sat array this spring (its
> time for a routine overhaul).
> > I have a M2 436CP42UG and the M2 CP22 at opposite ends
> of a 12? (1.25?) solid fiberglass pole. I am converting
> over to a 1.5? sold 14-foot fiberglass pole to give me
> better clearance for other antennas on the tower. Kenpro
> 5500 AZ/EL
> >
> > I never liked hanging the coax off the back since is
> throws off the balance.
> > When you slide the U-clamps Backward on the M2 boom to
> compensate for the coax weight on the back, you end up with
> the clamps on Thinner section of the Boom.
> >
> > Based on the theories, if I follow the coax routing
> and avoid the half or full wave points I may be able to run
> the coax down the boom?
> >
> > Would this work on the 70 cm too?
> >
> > Thanks Miles
> >
> >
> > --- On Thu, 4/23/09, Jim Jerzycke
> <kq6ea@xxxxxxx.xxx> wrote:
> >
> >
> >> From: Jim Jerzycke <kq6ea@xxxxxxx.xxx>
> >> Subject: [amsat-bb] Re: Cross Boom
> >> To: "Jeff Yanko" <wb3jfs@xxx.xxx>,
> "Joe" <nss@xxx.xxx>, "Billy
> Simpkins" <bsimpkins31@xxxxxxxx.xxx>,
> "Edward Cole" <kl7uw@xxxxxxxxx.xxx>
> >> Cc: amsat-bb@xxxxx.xxx
> >> Date: Thursday, April 23, 2009, 1:41 AM
> >> It's here on Howard's site:
> >> http://www.g6lvb.com/fibermetalboom.htm
> >>
> >>
> >> --- On Wed, 4/22/09, Edward Cole
> >> <kl7uw@xxxxxxxxx.xxx> wrote:
> >>
> >>
> >>> From: Edward Cole <kl7uw@xxxxxxxxx.xxx>
> >>> Subject: Re: [amsat-bb] Re: Cross Boom
> >>> To: "Jeff Yanko"
> <wb3jfs@xxx.xxx>,
> >>>
> >> kq6ea@xxxxxxx.xxxx "Joe"
> <nss@xxx.xxx>,
> >> "Billy Simpkins"
> <bsimpkins31@xxxxxxxx.xxx>
> >>
> >>> Cc: amsat-bb@xxxxx.xxx
> >>> Date: Wednesday, April 22, 2009, 10:39 PM
> >>> The coax shield coming off the antenna boom at
> a right
> >>>
> >> angle
> >>
> >>> looks like another parasitic element being
> added to the
> >>>
> >> antenna
> >>
> >>> causing severe distortion of the antenna
> pattern. But if one
> >>> installs the antenna in the X configuration
> and attach the cross
> >>>
> >> boom in
> >>
> >>> a location away from any of the elements one
> can tightly
> >>>
> >> run
> >>
> >>> the coax across the metallic cross boom with
> little effect.
> >> This
> >>
> >>> was tested by WA5VJB and is a published
> article.
> >>>
> >>> I have my M2 436CP42UG mounted in this fashion
> and it
> >>> preforms well.
> >>>
> >>> 73, Ed - KL7UW
> >>> maybe someone else can point to the link to
> that
> >>>
> >> article.
> >>
> >>> At 11:41 AM 4/22/2009, Jeff Yanko wrote:
> >>>
> >>>> OK, I see where this is coming into play.
> So
> >>>>
> >> it's
> >>
> >>> possible that the coax
> >>>
> >>>> shield could react to the feedpoint system
> and
> >>>>
> >> pattern.
> >>
> >>> Now this raises a
> >>>
> >>>> question. If this is the case, has
> anybody tried
> >>>>
> >> a
> >>
> >>> broadband choke balun to
> >>>
> >>>> limit this potential problem? If you
> think about
> >>>>
> >> it,
> >>
> >>> the bigger issue with
> >>>
> >>>> coax effecting the radiation pattern is
> improper
> >>>>
> >>> decoupling of the fed
> >>>
> >>>> point. If the outside shield is hot with
> RF it
> >>>>
> >> will
> >>
> >>> radiated and effect the
> >>>
> >>>> pattern big time. If the coax is properly
> >>>>
> >> decoupled at
> >>
> >>> the fed point the
> >>>
> >>>> outside shield will ideally have zero rf
> current
> >>>>
> >> on it
> >>
> >>> and ideally have no
> >>>
> >>>> impact on the pattern.
> >>>>
> >>>> Thoughts?
> >>>>
> >>>>
> >>>> 73,
> >>>>
> >>>> Jeff WB3JFS
> >>>>
> >>>>
> >>>> ----- Original Message -----
> >>>> From: "Jim Jerzycke"
> >>>>
> >>> <kq6ea@xxxxxxx.xxx>
> >>>
> >>>> To: "Joe" <nss@xxx.xxx>;
> >>>>
> >> "Billy
> >>
> >>> Simpkins"
> <bsimpkins31@xxxxxxxx.xxx>;
> >>>
> >> "Jeff
> >>
> >>>> Yanko" <wb3jfs@xxx.xxx>
> >>>> Cc: <amsat-bb@xxxxx.xxx>
> >>>> Sent: Wednesday, April 22, 2009 11:09 AM
> >>>> Subject: Re: [amsat-bb] Re: Cross Boom
> >>>>
> >>>>
> >>>>
> >>>>> Because the shield of the coax
> >>>>>
> >> "looks"
> >>
> >>> like a piece of pipe, and has the
> >>>
> >>>>> same effect on the antenna pattern
> that
> >>>>>
> >>> you're trying to eliminate by
> >>>
> >>>>> going to a non-metallic cross-boom.
> >>>>> Jim KQ6EA
> >>>>>
> >>>>>
> >>>>> --- On Wed, 4/22/09, Jeff Yanko
> >>>>>
> >>> <wb3jfs@xxx.xxx> wrote:
> >>>
> >>>>>> From: Jeff Yanko
> <wb3jfs@xxx.xxx>
> >>>>>> Subject: [amsat-bb] Re: Cross Boom
> >>>>>> To: "Joe"
> <nss@xxx.xxx>,
> >>>>>>
> >>> "Billy Simpkins"
> >>>
> >> <bsimpkins31@xxxxxxxx.xxx>
> >>
> >>>>>> Cc: amsat-bb@xxxxx.xxx
> >>>>>> Date: Wednesday, April 22, 2009,
> 10:55
> >>>>>>
> >> AM
> >>
> >>>>>> Hi all,
> >>>>>> I found this line confusing....
> >>>>>>
> >>>>>> "But then if you go
> insulated
> >> then do
> >>
> >>> not run the
> >>>
> >>>>>> feedline along it either
> >>>>>> or you just defeated the purpose
> of the
> >>>>>>
> >>> insulated
> >>>
> >>>>>> boom."
> >>>>>>
> >>>>>> My question is if you run the coax
> along
> >>>>>>
> >> an
> >>
> >>> insulated
> >>>
> >>>>>> crossboom, ie.
> >>>>>> fiberglass, how could that affect
> the
> >>>>>>
> >>> coupling of the
> >>>
> >>>>>> transmission line when
> >>>>>> the object it is being attached to
> is
> >>>>>> "insulated"?
> >>>>>>
> >>>>>>
> >>>>>> 73,
> >>>>>>
> >>>>>> Jeff WB3JFS
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>> ----- Original Message -----
> >>>>>> From: "Joe"
> >>>>>>
> >> <nss@xxx.xxx>
> >>
> >>>>>> To: "Billy Simpkins"
> >>>>>> <bsimpkins31@xxxxxxxx.xxx>
> >>>>>> Cc: <amsat-bb@xxxxx.xxx>
> >>>>>> Sent: Wednesday, April 22, 2009
> 7:06 AM
> >>>>>> Subject: [amsat-bb] Re: Cross Boom
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>> It all depends on how the
> elements
> >>>>>>>
> >> are
> >>
> >>> mounted.
> >>>
> >>>>>>> If at 45 to 90 degrees from
> the
> >>>>>>>
> >>> crossarm, no propblem
> >>>
> >>>>>> and use anything,
> >>>>>>
> >>>>>>> But if in the same plane then
> need
> >>>>>>>
> >>> insulated
> >>>
> >>>>>> crossboom,
> >>>>>>
> >>>>>>> But then if you go insulated
> then
> >>>>>>>
> >> do
> >>
> >>> not run the
> >>>
> >>>>>> feedline along it
> >>>>>>
> >>>>>>> either or you just defeated
> the
> >>>>>>>
> >> purpose
> >>
> >>> of the
> >>>
> >>>>>> insulated boom.
> >>>>>>
> >>>>>>> Billy Simpkins wrote:
> >>>>>>>
> >>>>>>>
> >>>>>>>> Is a fiber glass or some
> other
> >>>>>>>>
> >>> non-conductive
> >>>
> >>>>>> material necessary for a
> >>>>>>
> >>>>>>>> cross boom? What or the
> >>>>>>>>
> >> advantages
> >>
> >>> and
> >>>
> >>>>>> disadvantages versus a metal one?
> >>>>>>
> >>>>>>>> Thanks,
> >>>>>>>> Billy KF0CK
> >>>>>>>>
> >>>>
> _______________________________________________
> >>>>
> >>>>>>>> Sent via
> AMSAT-BB@xxxxx.xxx.
> >>>>>>>>
> >> Opinions
> >>
> >>> expressed are
> >>>
> >>>>>> those of the author.
> >>>>>>
> >>>>>>>> Not an AMSAT-NA member?
> Join now
> >>>>>>>>
> >> to
> >>
> >>> support the
> >>>
> >>>>>> amateur satellite program!
> >>>>>>
> >>>>>>>> Subscription settings:
> >>>>>>>>
> >> http://amsat.org/mailman/listinfo/amsat-bb
> >>
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>
> _______________________________________________
> >>>
> >>>>>>> Sent via AMSAT-BB@xxxxx.xxx.
> >>>>>>>
> >> Opinions
> >>
> >>> expressed are
> >>>
> >>>>>> those of the author.
> >>>>>>
> >>>>>>> Not an AMSAT-NA member? Join
> now to
> >>>>>>>
> >>> support the
> >>>
> >>>>>> amateur satellite program!
> >>>>>>
> >>>>>>> Subscription settings:
> >>>>>>>
> >> http://amsat.org/mailman/listinfo/amsat-bb
> >>
> >>>>>>
> >>>>>>
> >>>
> _______________________________________________
> >>>
> >>>>>> Sent via AMSAT-BB@xxxxx.xxx.
> Opinions
> >>>>>>
> >>> expressed are those
> >>>
> >>>>>> of the author.
> >>>>>> Not an AMSAT-NA member? Join now
> to
> >>>>>>
> >> support
> >>
> >>> the amateur
> >>>
> >>>>>> satellite program!
> >>>>>> Subscription settings:
> >>>>>>
> >>>>>>
> >> http://amsat.org/mailman/listinfo/amsat-bb
> >>
> >>>>
> _______________________________________________
> >>>> Sent via AMSAT-BB@xxxxx.xxx. Opinions
> expressed
> >>>>
> >> are
> >>
> >>> those of the author.
> >>>
> >>>> Not an AMSAT-NA member? Join now to
> support the
> >>>>
> >> amateur
> >>
> >>> satellite program!
> >>>
> >>>> Subscription settings:
> >>>>
> >>> http://amsat.org/mailman/listinfo/amsat-bb
> >>>
> >> _______________________________________________
> >> Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed
> are those
> >> of the author.
> >> Not an AMSAT-NA member? Join now to support the
> amateur
> >> satellite program!
> >> Subscription settings:
> >> http://amsat.org/mailman/listinfo/amsat-bb
> >>
> >
> >
> >
> >
> >
------------------------------
Message: 5
Date: Thu, 23 Apr 2009 19:10:10 -0500
From: "Glenn AA5PK" <aa5pk@xxxxxxxxxx.xxx>
Subject: [amsat-bb] A little OT: The Great Brazilian Sat-Hack
Crackdown
To: <amsat-bb@xxxxx.xxx>
Message-ID: <DF298109AEBA4224876D8702DDCF5498@xxxxxxxxxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
"On the night of March 8, cruising 22,000 miles above the Earth, U.S. Navy
communications satellite FLTSAT-8 suddenly erupted with illicit activity.
Jubilant voices and anthems crowded the channel on a junkyard's worth of
homemade gear from across vast and silent stretches of the Amazon: Ronaldo,
a Brazilian soccer idol, had just scored his first goal with the
Corinthians."
"To use the satellite, pirates typically take an ordinary ham radio
transmitter, which operates in the 144- to 148-MHZ range, and add a
frequency doubler cobbled from coils and a varactor diode. That lets the
radio stretch into the lower end of FLTSATCOM's 292- to 317-MHz uplink
range. All the gear can be bought near any truck stop for less than $500.
Ads on specialized websites offer to perform the conversion for less than
$100. Taught the ropes, even rough electricians can make Bolinha-ware."
<http://www.wired.com/politics/security/news/2009/04/fleetcom?currentPage=1>
Glenn AA5PK
AMSAT #6694
------------------------------
Message: 6
Date: Fri, 24 Apr 2009 00:18:44 +0000
From: Nigel Gunn G8IFF/W8IFF <nigel@xxxxx.xxx>
Subject: [amsat-bb] Re: A little OT: The Great Brazilian Sat-Hack
Crackdown
To: Glenn AA5PK <aa5pk@xxxxxxxxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Message-ID: <49F10564.4060900@xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
You're behind the times, Glenn.
This was worked to death last week.
Glenn AA5PK wrote:
> "On the night of March 8, cruising 22,000 miles above the Earth, U.S. Navy
> communications satellite FLTSAT-8 suddenly erupted with illicit activity.
> Jubilant voices and anthems crowded the channel on a junkyard's worth of
> homemade gear from across vast and silent stretches of the Amazon: Ronaldo,
> a Brazilian soccer idol, had just scored his first goal with the
> Corinthians."
>
> "To use the satellite, pirates typically take an ordinary ham radio
> transmitter, which operates in the 144- to 148-MHZ range, and add a
> frequency doubler cobbled from coils and a varactor diode. That lets the
> radio stretch into the lower end of FLTSATCOM's 292- to 317-MHz uplink
> range. All the gear can be bought near any truck stop for less than $500.
> Ads on specialized websites offer to perform the conversion for less than
> $100. Taught the ropes, even rough electricians can make Bolinha-ware."
>
> <http://www.wired.com/politics/security/news/2009/04/fleetcom?currentPage=1>
>
> Glenn AA5PK
> AMSAT #6694
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
>
>
> ------------------------------------------------------------------------
>
>
> No virus found in this incoming message.
> Checked by AVG - www.avg.com
> Version: 8.5.287 / Virus Database: 270.12.3/2076 - Release Date: 04/23/09
06:30:00
>
--
Nigel A. Gunn, 1865 El Camino Drive, Xenia, OH 45385-1115, USA. tel +1 937
825 5032
Amateur Radio G8IFF W8IFF (was KC8NHF), e-mail nigel@xxxxx.xxx www
http://www.ngunn.net
Member of ARRL, GQRP #11396, QRPARCI #11644, SOC #548, Flying Pigs QRP Club
International #385,
Dayton ARA #2128, AMSAT-NA LM-1691, AMSAT-UK, MKARS, ALC,
GCARES, XWARN
------------------------------
Message: 7
Date: Thu, 23 Apr 2009 19:24:45 -0500
From: "Glenn AA5PK" <aa5pk@xxxxxxxxxx.xxx>
Subject: [amsat-bb] Re: A little OT: The Great Brazilian Sat-Hack
Crackdown
To: "Nigel Gunn G8IFF/W8IFF" <nigel@xxxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Message-ID: <47E45632665F4151AC819E780E7369CE@xxxxxxxxxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=response
Ouch! I guess I need to check in more often :O)
----- Original Message -----
From: "Nigel Gunn G8IFF/W8IFF" <nigel@xxxxx.xxx>
To: "Glenn AA5PK" <aa5pk@xxxxxxxxxx.xxx>
Cc: <amsat-bb@xxxxx.xxx>
Sent: Thursday, April 23, 2009 7:18 PM
Subject: Re: [amsat-bb] A little OT: The Great Brazilian Sat-Hack Crackdown
> You're behind the times, Glenn.
> This was worked to death last week.
>
>
> Glenn AA5PK wrote:
>> "On the night of March 8, cruising 22,000 miles above the Earth, U.S.
>> Navy communications satellite FLTSAT-8 suddenly erupted with illicit
>> activity. Jubilant voices and anthems crowded the channel on a junkyard's
>> worth of homemade gear from across vast and silent stretches of the
>> Amazon: Ronaldo, a Brazilian soccer idol, had just scored his first goal
>> with the Corinthians."
>>
>> "To use the satellite, pirates typically take an ordinary ham radio
>> transmitter, which operates in the 144- to 148-MHZ range, and add a
>> frequency doubler cobbled from coils and a varactor diode. That lets the
>> radio stretch into the lower end of FLTSATCOM's 292- to 317-MHz uplink
>> range. All the gear can be bought near any truck stop for less than $500.
>> Ads on specialized websites offer to perform the conversion for less than
>> $100. Taught the ropes, even rough electricians can make Bolinha-ware."
>>
>>
<http://www.wired.com/politics/security/news/2009/04/fleetcom?currentPage=1>
>>
>> Glenn AA5PK
>> AMSAT #6694 _______________________________________________
>> Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
>> Not an AMSAT-NA member? Join now to support the amateur satellite
>> program!
>> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
>>
>>
>> ------------------------------------------------------------------------
>>
>>
>> No virus found in this incoming message.
>> Checked by AVG - www.avg.com Version: 8.5.287 / Virus Database:
>> 270.12.3/2076 - Release Date: 04/23/09 06:30:00
>>
>
> --
> Nigel A. Gunn, 1865 El Camino Drive, Xenia, OH 45385-1115, USA. tel +1
> 937 825 5032
> Amateur Radio G8IFF W8IFF (was KC8NHF), e-mail nigel@xxxxx.xxx www
> http://www.ngunn.net
> Member of ARRL, GQRP #11396, QRPARCI #11644, SOC #548, Flying Pigs QRP
> Club International #385,
> Dayton ARA #2128, AMSAT-NA LM-1691, AMSAT-UK, MKARS, ALC,
> GCARES, XWARN
>
------------------------------
_______________________________________________
Sent via amsat-bb@xxxxx.xxx. Opinions expressed are those of the author.
Not an AMSAT member? Join now to support the amateur satellite program!
http://amsat.org/mailman/listinfo/amsat-bb
End of AMSAT-BB Digest, Vol 4, Issue 196
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