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CX2SA > SATDIG 11.12.13 00:43l 830 Lines 28008 Bytes #999 (0) @ WW
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From: CX2SA@CX2SA.SAL.URY.SA
To : SATDIG@WW
Today's Topics:
1. Re: why not to buy an M2 antenna (Clayton Coleman)
2. Re: why not to buy an M2 antenna (Mark L. Hammond)
3. Re: why not to buy an M2 antenna (Rich/wa4bue)
4. HI Juno (Roland Zurmely)
5. help with satpc32iss (Nick Pugh K5QXJ)
6. CAPE-2 over Brazil (Roland Zurmely)
7. Re: help with satpc32iss (Mark L. Hammond)
8. Re: why not to buy an M2 antenna (John Becker)
9. Re: why not to buy an M2 antenna (R.T.Liddy)
10. Re: why not to buy an M2 antenna Sealing Coax (Gordon JC Pearce)
11. Re: why not to buy an M2 antenna Sealing Coax (Lizeth Norman)
12. Re: why not to buy an M2 antenna Sealing Coax (Jim Sanford)
----------------------------------------------------------------------
Message: 1
Date: Tue, 10 Dec 2013 14:15:24 -0600
From: Clayton Coleman <kayakfishtx@xxxxx.xxx>
To: "Rich/wa4bue" <richard.siff@xxxxxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: why not to buy an M2 antenna
Message-ID:
<CAPovOwddx6ZrXFaEU7wn+3F+QL5Gqur-YdU9uyY1GS3hrZvKFg@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
I have a set of Gulf Alphas I bought and never put up for sale. As new.
73
Clayton
W5PFG
On Dec 10, 2013 1:30 PM, "Rich/wa4bue" <richard.siff@xxxxxxx.xxx> wrote:
> Can that block be treated with a non corrosive lacquer? Sun and weather
> does a lot of damage.
>
> Gulf Alpha is no longer producing their OSCAR antennas.
>
> Rich
> W4BUE
>
> ----- Original Message ----- From: "WA6FWF" <wa6fwf@xxxxxxxxx.xxx>
> To: <amsat-bb@xxxxx.xxx>
> Sent: Tuesday, December 10, 2013 1:01 PM
> Subject: [amsat-bb] Re: why not to buy an M2 antenna
>
>
> Might I ask what sort of preventative maintenance did you perform each
>> year?
>>
>> 73 Kevin WA6FWF
>>
>>
>> On 12/10/2013 8:46 AM, Lizeth Norman wrote:
>>
>>> Purchased a M2 436CP30. Had a failure of the switching block in less
>>> than 5
>>> years. White plastic cracked and allowed water to ingress to the
>>> switcher.
>>> Customer service?? No return call.
>>> Pics on request.
>>> Norm n3ykf
>>> _______________________________________________
>>> 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: Tue, 10 Dec 2013 15:21:39 -0500
From: "Mark L. Hammond" <marklhammond@xxxxx.xxx>
To: WA6FWF <wa6fwf@xxxxxxxxx.xxx>
Cc: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: why not to buy an M2 antenna
Message-ID: <DCE1548F-F7E0-4B70-9A88-A82C4CBDCF62@xxxxx.xxx>
Content-Type: text/plain; charset=us-ascii
I have the short pair. Holding up well. They are about 15 years old. Loved
them enough to buy other non-satellite yagis ( for satellite use nonetheless!)
Maybe it was bad batch of plastic?!
Mark L. Hammond [N8MH]
> On Dec 10, 2013, at 1:54 PM, WA6FWF <wa6fwf@xxxxxxxxx.xxx> wrote:
>
> Well I look my antennas over each year but they have always been
relatively easy to get at even when they were on a glen martin tower on the
roof, I could see every other year if it is a major undertaking but based on
his call he is in New York, to think you can put a antenna up and ignore it
for years in a area with snow and freezing temps stretches reason.
>
> I'm also a fan of coax seal and some sort of coating on the elements,
When I look my antennas over I'm checking for loose bolts and UV damage to
plastic parts and coax, out on the west coast it is the Sun and heat that is
the thing to worry about.
>
> 73 Kevin WA6FWF
>
>
>> On 12/10/2013 10:32 AM, R.T.Liddy wrote:
>> I'm neutral on this topic, but I was curious if the M2 Manual mentioned
>> anything about maintenance. Here are the instructions:
>>
>> http://www.m2inc.com/pdf_manuals/436CP30.pdf
>>
>>
>> There is no mention of maintenance. Of course, it would be a good idea
>> to check things out regularly. But, depending on where the antenna is
>> installed, it could be quite difficult to get to it once it's put up. I
can't think
>> of anyone that actually does yearly maintenance on their antennas. My rule
>> of thumb is to anticipate what problems could occur and do what's necessary
>> to avoid them during the initial installation. I always use Coax-Seal and
spray
>> the heck out of everything with clear Rustoleum.
>>
>> GL, Bob K8BL
>>
>>
>> ________________________________
>> From: WA6FWF <wa6fwf@xxxxxxxxx.xxx>
>> To: amsat-bb@xxxxx.xxx
>> Sent: Tuesday, December 10, 2013 1:01 PM
>> Subject: [amsat-bb] Re: why not to buy an M2 antenna
>>
>> Might I ask what sort of preventative maintenance did you perform each
year?
>>
>> 73 Kevin WA6FWF
>>
>>
>>> On 12/10/2013 8:46 AM, Lizeth Norman wrote:
>>> Purchased a M2 436CP30. Had a failure of the switching block in less
than 5
>>> years. White plastic cracked and allowed water to ingress to the switcher.
>>> Customer service?? No return call.
>>> Pics on request.
>>> Norm n3ykf
>>> _______________________________________________
>>> 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: Tue, 10 Dec 2013 15:21:47 -0500
From: "Rich/wa4bue" <richard.siff@xxxxxxx.xxx>
To: "Clayton Coleman" <kayakfishtx@xxxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: why not to buy an M2 antenna
Message-ID: <FDA6B1EF7D0A469F922D7E471B0F3163@xxxxxxxxx>
Content-Type: text/plain; charset="iso-8859-1"
Wish I had known before purchasing new antennas for the K4AMG club. >From
what I could see they are of better construction.
----- Original Message -----
From: Clayton Coleman
To: Rich/wa4bue
Cc: amsat-bb@xxxxx.xxx
Sent: Tuesday, December 10, 2013 3:15 PM
Subject: Re: [amsat-bb] Re: why not to buy an M2 antenna
I have a set of Gulf Alphas I bought and never put up for sale. As new.
73
Clayton
W5PFG
On Dec 10, 2013 1:30 PM, "Rich/wa4bue" <richard.siff@xxxxxxx.xxx> wrote:
Can that block be treated with a non corrosive lacquer? Sun and weather
does a lot of damage.
Gulf Alpha is no longer producing their OSCAR antennas.
Rich
W4BUE
----- Original Message ----- From: "WA6FWF" <wa6fwf@xxxxxxxxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Sent: Tuesday, December 10, 2013 1:01 PM
Subject: [amsat-bb] Re: why not to buy an M2 antenna
Might I ask what sort of preventative maintenance did you perform each
year?
73 Kevin WA6FWF
On 12/10/2013 8:46 AM, Lizeth Norman wrote:
Purchased a M2 436CP30. Had a failure of the switching block in less
than 5
years. White plastic cracked and allowed water to ingress to the
switcher.
Customer service?? No return call.
Pics on request.
Norm n3ykf
_______________________________________________
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: Tue, 10 Dec 2013 12:46:33 -0800 (PST)
From: Roland Zurmely <py4zbz@xxxxx.xxx>
To: AMSAT <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] HI Juno
Message-ID:
<1386708393.24308.YahooMailNeo@xxxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=us-ascii
The first HI recorded in Brazil at 18:00 UTC,
many transmissions can be seen:
http://www.qsl.net/py4zbz/hijuno.htm
And here some HI received by JUNO:
http://photojournal.jpl.nasa.gov/archive/PIA17744.mov
73 de Roland PY4ZBZ
------------------------------
Message: 5
Date: Tue, 10 Dec 2013 14:47:26 -0600
From: "Nick Pugh K5QXJ" <quadpugh@xxxxxxxxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] help with satpc32iss
Message-ID: <005201cef5e9$09fa3260$1dee9720$@xxx>
Content-Type: text/plain; charset="us-ascii"
We are using satpc32iss with windows 7 and a Kenwood ts2000. With the C+
switch we can control the radio frequency with the up/down arrows but the
radio will not up date for Doppler correction. Anyone of the list have any
ideas?
Thanks
nick ARS K5QXJ EM30xa 30.1N 92.1W
Office 337 593 8700
Cell 337 258 2527
Helping UL become a world Class Engineering and Educational School
------------------------------
Message: 6
Date: Tue, 10 Dec 2013 12:48:14 -0800 (PST)
From: Roland Zurmely <py4zbz@xxxxx.xxx>
To: AMSAT <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] CAPE-2 over Brazil
Message-ID:
<1386708494.40628.YahooMailNeo@xxxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=iso-8859-1
Received 3 FM CW 500 Hz tone beacons:
W5UL CAPE2 GN V5435 ?@xxxxx UTC
W5UL CAPE2 GN V5337 ?@xxxxx UTC
W5UL CAPE2 GN V5240 ?@xxxxx UTC
Using object 2013-064C with perfect match
Orbit #316 ?10 dec 3013
73 de Roland PY4ZBZ
------------------------------
Message: 7
Date: Tue, 10 Dec 2013 15:56:26 -0500
From: "Mark L. Hammond" <marklhammond@xxxxx.xxx>
To: Nick Pugh K5QXJ <quadpugh@xxxxxxxxx.xxx>
Cc: "<amsat-bb@xxxxx.xxx>" <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: help with satpc32iss
Message-ID: <1C3720B3-644B-42AC-A6D6-0E381B2750DB@xxxxx.xxx>
Content-Type: text/plain; charset=us-ascii
Try changing step size to 0 in the CAT menu. Sometimes it is working but not
updating enough to see it easily.
Mark L. Hammond [N8MH]
> On Dec 10, 2013, at 3:47 PM, "Nick Pugh K5QXJ" <quadpugh@xxxxxxxxx.xxx>
wrote:
>
> We are using satpc32iss with windows 7 and a Kenwood ts2000. With the C+
> switch we can control the radio frequency with the up/down arrows but the
> radio will not up date for Doppler correction. Anyone of the list have any
> ideas?
>
>
>
>
>
>
>
> Thanks
>
>
>
> nick ARS K5QXJ EM30xa 30.1N 92.1W
>
> Office 337 593 8700
>
> Cell 337 258 2527
>
>
>
> Helping UL become a world Class Engineering and Educational School
>
>
>
> _______________________________________________
> 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: 8
Date: Tue, 10 Dec 2013 15:16:01 -0600
From: John Becker <w0jab@xxxxxxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: why not to buy an M2 antenna
Message-ID: <52A78491.70605@xxxxxxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
On 12/10/2013 1:22 PM, Edward R Cole wrote:
> I am breaking with my normal practise of not posting to the amsat-bb:
>
> I have a M2 436CP42 which is even larger than the 436CP30. I have had
> it since about 1999 as it was used for AO-40 uplink. I wired mine in
> RHCP without the optional polarity switching relay so I have no direct
> experience with the relay. My antenna has performed just fine in the
> 14-years it has been mounted outside so the antenna is certainly of
> good construction. I made no extra protection other than good sealing
> of coax lines.
You and me both. As well as many others.
John W0JAB
------------------------------
Message: 9
Date: Tue, 10 Dec 2013 13:25:18 -0800 (PST)
From: "R.T.Liddy" <k8bl@xxxxxxxxx.xxx>
To: Lizeth Norman <normanlizeth@xxxxx.xxx>
Cc: "<,amsat-bb@xxxxx.xxxxxxxx <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: why not to buy an M2 antenna
Message-ID:
<1386710718.29298.YahooMailNeo@xxxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=iso-8859-1
>From the pix, I'd say the UV made the plastic brittle and vibration
from the wind over the elements finally made the cracks.? - Bob K8BL
________________________________
From: Lizeth Norman <normanlizeth@xxxxx.xxx>
To:
Cc: "<,amsat-bb@xxxxx.xxxxxxxx <amsat-bb@xxxxx.xxx>
Sent: Tuesday, December 10, 2013 2:47 PM
Subject: [amsat-bb] Re: why not to buy an M2 antenna
I am prepared to consider that this is an anomaly. Have a look here:
http://www.flickr.com/photos/n3ykf/11312549334/
and feel free to browse the three pictures of the antenna.
Told the people at M squared and got nowhere. This is definitely an
engineering problem.
The issue with the front driven element is that it, too is cracking and it
too will fail. Probably sooner than later.
On Tue, Dec 10, 2013 at 2:22 PM, Edward R Cole <kl7uw@xxxxxxxxx.xxx> wrote:
> I am breaking with my normal practise of not posting to the amsat-bb:
>
> I have a M2 436CP42 which is even larger than the 436CP30.? I have had it
> since about 1999 as it was used for AO-40 uplink.? I wired mine in RHCP
> without the optional polarity switching relay so I have no direct
> experience with the relay.? My antenna has performed just fine in the
> 14-years it has been mounted outside so the antenna is certainly of good
> construction.? I made no extra protection other than good sealing of coax
> lines.
>
> The relay in question is probably not manufactured by M2 so quality may
> not be up to their usual standard?? The white plastic obviously was not UV
> resistant.? Instead of bemoaning this just replace it with a good coaxial
> relay like the CX140 from Tohtsu (or suitable substitute) which you can buy
> from DEMI, RF Parts and probably many ham dealers.
>
> I wonder if M2 even stocks these relays anymore?? No comment on their
> customer service.? You should have heard back from them.
>
> I have several M2 antennas in use: four 2mXP-20 for eme, 436CP42 AND 2m7
> for satellite, 420-450-11 for general purpose UHF, and several splitters
> and other components all which perform well for over a decade in Alaska's
> wx.
>
> 73, Ed - KL7UW
>
>
> At 09:54 AM 12/10/2013, WA6FWF wrote:
>
>>? ? Well I look my antennas over each year but they have always been
>> relatively easy to get at even when they were on a glen martin tower on the
>> roof, I could see every other year if it is a major undertaking but based
>> on his call he is in New York, to think you can put a antenna up and ignore
>> it for years in a area with snow and freezing temps stretches reason.
>>
>>? ? I'm also a fan of coax seal and some sort of coating on the elements,
>> When I look my antennas over I'm checking for loose bolts and UV damage to
>> plastic parts and coax, out on the west coast it is the Sun and heat that
>> is the thing to worry about.
>>
>> 73 Kevin WA6FWF
>>
>>
>> On 12/10/2013 10:32 AM, R.T.Liddy wrote:
>>
>>> I'm neutral on this topic, but I was curious if the M2 Manual mentioned
>>> anything about maintenance. Here are the instructions:
>>>
>>> http://www.m2inc.com/pdf_manuals/436CP30.pdf
>>>
>>>
>>> There is no mention of maintenance. Of course, it would be a good idea
>>> to check things out regularly. But, depending on where the antenna is
>>> installed, it could be quite difficult to get to it once it's put up. I
>>> can't think
>>> of anyone that actually does yearly maintenance on their antennas. My
>>> rule
>>> of thumb is to anticipate what problems could occur and do what's
>>> necessary
>>> to avoid them during the initial installation. I always use Coax-Seal
>>> and spray
>>> the heck out of everything with clear Rustoleum.
>>>
>>> GL,? Bob K8BL
>>>
>>>
>>> ________________________________
>>>? From: WA6FWF <wa6fwf@xxxxxxxxx.xxx>
>>> To: amsat-bb@xxxxx.xxx
>>> Sent: Tuesday, December 10, 2013 1:01 PM
>>> Subject: [amsat-bb] Re: why not to buy an M2 antenna
>>>
>>>
>>> Might I ask what sort of preventative maintenance did you perform each
>>> year?
>>>
>>>? ? ? 73 Kevin WA6FWF
>>>
>>>
>>> On 12/10/2013 8:46 AM, Lizeth Norman wrote:
>>>
>>>> Purchased a M2 436CP30. Had a failure of the switching block in less
>>>> than 5
>>>> years. White plastic cracked and allowed water to ingress to the
>>>> switcher.
>>>> Customer service?? No return call.
>>>> Pics on request.
>>>> Norm n3ykf
>>>> _______________________________________________
>>>> 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
>>
>
> 73, Ed - KL7UW
> http://www.kl7uw.com/
> dubususa@xxxxx.xxx
> "Kits made by KL7UW"
> _______________________________________________
> 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: 10
Date: Tue, 10 Dec 2013 21:42:16 +0000
From: Gordon JC Pearce <gordonjcp@xxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: why not to buy an M2 antenna Sealing Coax
Message-ID: <20131210214216.GA26017@xxxx.xxx>
Content-Type: text/plain; charset=iso-8859-1
On Tue, Dec 10, 2013 at 02:21:50PM -0500, Rich/wa4bue wrote:
> I am not a fan of COAX Seal, it tends to migrate into the connector.
>
> In the Hampton Roads area, a NAVY town, we use the old NAVY way:
> * Light application of high great Silicon
> * Double sided electrical tape rap
> * Electrical tape rap
> * Spray lacquer over
> * Nylon tie on each end
>
> Great seal!
Ew, LX tape. Yuck. Leaves sticky residue when you try to peel it off,
loses its sticky and unwraps by itself leaving sticky crap everywhere if you
don't.
Get proper rubber self-amagamating tape, and do the job once and do it right.
--
Gordonjcp MM0YEQ (up here at 57?N we get a bit of weather)
------------------------------
Message: 11
Date: Tue, 10 Dec 2013 16:51:41 -0500
From: Lizeth Norman <normanlizeth@xxxxx.xxx>
To: Gordon JC Pearce <gordonjcp@xxxx.xxx>
Cc: "<,amsat-bb@xxxxx.xxxxxxxx <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: why not to buy an M2 antenna Sealing Coax
Message-ID:
<CAJUhCTPDid78RpF4zDiSo+6WBSW47o+2NbTqwKwfmjG2hRuVRA@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
All,
Actually, the M2 antennas don't need weatherproofing. The polarity
switching cable/ transformers and baluns are made of RG-6 gel filled with
commercial compression connectors. This stuff should be bulletproof.
The polarity switch and front driven element are sealed. There is no way
(and no reason) to weatherproof them.
Norm n3ykf
On Tue, Dec 10, 2013 at 4:42 PM, Gordon JC Pearce <gordonjcp@xxxx.xxx>wrote:
> On Tue, Dec 10, 2013 at 02:21:50PM -0500, Rich/wa4bue wrote:
> > I am not a fan of COAX Seal, it tends to migrate into the connector.
> >
> > In the Hampton Roads area, a NAVY town, we use the old NAVY way:
> > * Light application of high great Silicon
> > * Double sided electrical tape rap
> > * Electrical tape rap
> > * Spray lacquer over
> > * Nylon tie on each end
> >
> > Great seal!
>
> Ew, LX tape. Yuck. Leaves sticky residue when you try to peel it off,
> loses its sticky and unwraps by itself leaving sticky crap everywhere if
> you don't.
>
> Get proper rubber self-amagamating tape, and do the job once and do it
> right.
>
> --
> Gordonjcp MM0YEQ (up here at 57?N we get a bit of weather)
> _______________________________________________
> 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: 12
Date: Tue, 10 Dec 2013 18:38:07 -0500
From: Jim Sanford <wb4gcs@xxxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: why not to buy an M2 antenna Sealing Coax
Message-ID: <52A7A5DF.9050709@xxxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
When I lived in Hampton Roads (and was in the Nav) I eventually came on
to the following algorithm:
2 layers of good electrical tape
2 layers of coax seal
2 more layers of good electrical tape, each overlapping the under layer.
When I retired from the Navy and took the antennas down, connectors that
had been in the air for 15 years looked brand new. An additional
bennie, if I had to open one up, just a slit with a knife and I could
peel the layers back & get access to the connector. When done, just
press back into place and cover with 2 more layers of good tape.
Worked great for me.
Good luck & 73,
Jim
wb4gcs@xxxxx.xxx
On 12/10/2013 2:21 PM, Rich/wa4bue wrote:
> I am not a fan of COAX Seal, it tends to migrate into the connector.
>
> In the Hampton Roads area, a NAVY town, we use the old NAVY way:
> * Light application of high great Silicon
> * Double sided electrical tape rap
> * Electrical tape rap
> * Spray lacquer over
> * Nylon tie on each end
>
> Great seal!
>
>
> ----- Original Message ----- From: "WA6FWF" <wa6fwf@xxxxxxxxx.xxx>
> To: <amsat-bb@xxxxx.xxx>
> Sent: Tuesday, December 10, 2013 1:54 PM
> Subject: [amsat-bb] Re: why not to buy an M2 antenna
>
>
>> Well I look my antennas over each year but they have always been
>> relatively easy to get at even when they were on a glen martin tower
>> on the roof, I could see every other year if it is a major
>> undertaking but based on his call he is in New York, to think you can
>> put a antenna up and ignore it for years in a area with snow and
>> freezing temps stretches reason.
>>
>> I'm also a fan of coax seal and some sort of coating on the
>> elements, When I look my antennas over I'm checking for loose bolts
>> and UV damage to plastic parts and coax, out on the west coast it is
>> the Sun and heat that is the thing to worry about.
>>
>> 73 Kevin WA6FWF
>>
>>
>> On 12/10/2013 10:32 AM, R.T.Liddy wrote:
>>> I'm neutral on this topic, but I was curious if the M2 Manual mentioned
>>> anything about maintenance. Here are the instructions:
>>>
>>> http://www.m2inc.com/pdf_manuals/436CP30.pdf
>>>
>>>
>>> There is no mention of maintenance. Of course, it would be a good idea
>>> to check things out regularly. But, depending on where the antenna is
>>> installed, it could be quite difficult to get to it once it's put
>>> up. I can't think
>>> of anyone that actually does yearly maintenance on their antennas.
>>> My rule
>>> of thumb is to anticipate what problems could occur and do what's
>>> necessary
>>> to avoid them during the initial installation. I always use
>>> Coax-Seal and spray
>>> the heck out of everything with clear Rustoleum.
>>>
>>> GL, Bob K8BL
>>>
>>>
>>> ________________________________
>>> From: WA6FWF <wa6fwf@xxxxxxxxx.xxx>
>>> To: amsat-bb@xxxxx.xxx
>>> Sent: Tuesday, December 10, 2013 1:01 PM
>>> Subject: [amsat-bb] Re: why not to buy an M2 antenna
>>>
>>> Might I ask what sort of preventative maintenance did you perform
>>> each year?
>>>
>>> 73 Kevin WA6FWF
>>>
>>>
>>> On 12/10/2013 8:46 AM, Lizeth Norman wrote:
>>>> Purchased a M2 436CP30. Had a failure of the switching block in
>>>> less than 5
>>>> years. White plastic cracked and allowed water to ingress to the
>>>> switcher.
>>>> Customer service?? No return call.
>>>> Pics on request.
>>>> Norm n3ykf
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>>
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>
> _______________________________________________
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End of AMSAT-BB Digest, Vol 8, Issue 452
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