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CX2SA > SATDIG 24.03.11 21:09l 527 Lines 16686 Bytes #999 (0) @ WW
BID : AMSATBB6171
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Subj: AMSAT-BB-digest V6 171
Path: IZ3LSV<IW0QNL<VE2PKT<F1BBI<CX2SA
Sent: 110324/1904Z @:CX2SA.LAV.URY.SA #:60575 [Minas] FBB7.00e $:AMSATBB6171
From: CX2SA@CX2SA.LAV.URY.SA
To : SATDIG@WW
Today's Topics:
1. FAST1 heard over Brasil (Roland Zurmely)
2. Re: Cushcraft 416-TB (i8cvs)
3. A few more ND9M/MM Panama Canal Pics (David Palmer)
4. Re: A few more ND9M/MM Panama Canal Pics (ALEJANDRO ARROYO)
5. More ND9M/MM Videos (Zachary Beougher)
6. Re: More ND9M/MM Videos (Zachary Beougher)
7. DX spots and old idea (Andrew Glasbrenner)
8. ND9M/MM Op Sked: 24 March (Clary, James T, Civilian)
9. Re: Antenna discussions (Ted)
10. Re: Antenna discussions (Dee)
11. Re: Antenna discussions (Stephen E. Belter)
----------------------------------------------------------------------
Message: 1
Date: Wed, 23 Mar 2011 13:15:35 -0700 (PDT)
From: Roland Zurmely <py4zbz@xxxxx.xxx>
Subject: [amsat-bb] FAST1 heard over Brasil
To: AMSAT <amsat-bb@xxxxx.xxx>
Message-ID: <228855.36695.qm@xxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=iso-8859-1
http://www.qsl.net/py4zbz/satelite.htm#f
?
73 de Roland.
------------------------------
Message: 2
Date: Wed, 23 Mar 2011 22:05:31 +0100
From: "i8cvs" <domenico.i8cvs@xxx.xx>
Subject: [amsat-bb] Re: Cushcraft 416-TB
To: "Howard Kowall" <hkowall@xxxx.xx>, "AMSAT BB" <amsat-bb@xxxxx.xxx>
Message-ID: <000701cbe99e$0bd368e0$0401a8c0@xxxxxx>
Content-Type: text/plain; charset="iso-8859-1"
Hi Howard ,VE4ISP
The Cushcraft 416 TB is a 2x8 elements crossed yagi for 70 cm with the
horizontal and vertical elements spaced 1/4 wave lenght in free space over
the boom.
The dipoles are feed using the T match system wich is a balanced system
and the balun is a 50 ohm coax line 1/2 electrical wavelengt used to
transform the 200 ohm balanced impedance of the dipole into 50 ohm
unbalanced impedance for the feed line.
To calculate the lenght of the balun you must multiply 1/2 wavelenght
into free space by the velocity factor of the coax cable used.
If you use RG-58/CU with velocity factor Vf = 0.66 then each balun
is long 22.7 cm or 8.9 " including the lug lenght.
The original phasing harness is 2 piece of 75 ohm coax cable wich is
an odd number of 1/4 electrical wavelenght and in your case the odd
number is 3 so that if you use RG-59/CU 75 ohm coax cable with
Vf = 0.66 then each 75 ohm line is 34 cm or 13.4 " long including
the SO239 connector.
You can find all data to modify the above antenna in order to get four
polarizations H-V-RHCP-LHCP reading the instructions in the
following address.
http://www.pa3guo.com/cushcraft_416tb.html
73" de
i8CVS Domenico
----- Original Message -----
From: "Howard Kowall" <hkowall@xxxx.xx>
To: "AMSAT BB" <amsat-bb@xxxxx.xxx>
Sent: Wednesday, March 23, 2011 2:28 PM
Subject: [amsat-bb] Cushcraft 416-TB
> Hello All
> I acquired a Cushcraft 416-Tb antenna,the so called phasing harness was in
bad shape,so I am going to make a new one for it.
> I could copy the original one,but yes I am making it hard on myself and
decide to calculate the proper cable type and length,and to do that I need
to know how the antenna actually works.Here is my problem ,the 2 driven
elements have a balun to each of the Tmatchs to make the impedance 50 ohms
on each driven element.The original phasing harness is 2 piece of 75 ohm
aprox 13" that goes to each driven element and the a so239 connector on the
other end of the harness is the 50 ohm feedline.I originally thought this
was a matching stub,but when I do the calculation for the matching
stub,should only be aprox 4" to each driven element.Am I missing something
here,how are they able to do this,does anyone know this antenna and how it
works.
> Thanks to all who read and respond in advance
> Howard VE4ISP
>
> _______________________________________________
> 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: Wed, 23 Mar 2011 15:41:18 -0700
From: David Palmer <zdap42@xxxxx.xxx>
Subject: [amsat-bb] A few more ND9M/MM Panama Canal Pics
To: AMSAT BB <amsat-bb@xxxxx.xxx>
Message-ID:
<AANLkTin1dRVFF+x2FrEcck5Srzuf3b6FzWR7czfijmp6@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
Hi Everyone,
For anyone interested, I posted a few more of the photos of Jim
ND9M/MM's ship in the Panama Canal at:
http://kb5wia.blogspot.com
Managed to get photos of the ship in Miraflores, going under the
Centennial Bridge, and leaving the canal at Gatun.
73 de Dave KB5WIA / CM88
------------------------------
Message: 4
Date: Wed, 23 Mar 2011 18:18:54 -0500
From: "ALEJANDRO ARROYO" <hp1coo@xxxx.xxx>
Subject: [amsat-bb] Re: A few more ND9M/MM Panama Canal Pics
To: <amsat-bb@xxxxx.xxx>
Message-ID: <01a901cbe9b0$ae3313d0$0a993b70$@xxx>
Content-Type: text/plain; charset="iso-8859-1"
Good to know. Just in case he has APRS capabilities we have a couple of
digipeaters working on 145.010 MHz. At least two of them should be reachable
from the Canal.
Regards,
Alejandro HP1COO
-----Original Message-----
From: David Palmer [mailto:zdap42@xxxxx.xxxx
Sent: Mi?rcoles, 23 de Marzo de 2011 05:41 p.m.
To: AMSAT BB
Subject: [amsat-bb] A few more ND9M/MM Panama Canal Pics
Hi Everyone,
For anyone interested, I posted a few more of the photos of Jim
ND9M/MM's ship in the Panama Canal at:
http://kb5wia.blogspot.com
Managed to get photos of the ship in Miraflores, going under the
Centennial Bridge, and leaving the canal at Gatun.
73 de Dave KB5WIA / CM88
_______________________________________________
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: Wed, 23 Mar 2011 20:19:54 -0400
From: "Zachary Beougher" <zack.kd8ksn@xxxxxxx.xxx>
Subject: [amsat-bb] More ND9M/MM Videos
To: <amsat-bb@xxxxx.xxx>
Message-ID: <SNT111-DS11877B5F4F751893C83B92B3B60@xxx.xxx>
Content-Type: text/plain; charset="utf-8"
Hi!
Here are a couple other videos of Jim?s ship (well, the ship he is on ;-)).
The first is Jim?s ship entering the Gatun Locks, and the second is when he
is exiting: Gatun Locks
73!
Zack
KD8KSN
------------------------------
Message: 6
Date: Wed, 23 Mar 2011 20:28:13 -0400
From: "Zachary Beougher" <zack.kd8ksn@xxxxxxx.xxx>
Subject: [amsat-bb] Re: More ND9M/MM Videos
To: <amsat-bb@xxxxx.xxx>
Message-ID: <SNT111-DS599EC13672B2A93F342D2B3B60@xxx.xxx>
Content-Type: text/plain; charset="utf-8"
Whoops.... That link requires a password. Try this one:
http://personalspace.sony.net/email/share/794e6244306d706c5a4764696d3279615a5a
466d6170755a6c673d3d,first?rd=9612267#i0
Make sure you get it all.
Let me know if you experience issues with that one.
Zack
KD8KSN
From: Zachary Beougher
Sent: Wednesday, March 23, 2011 8:19 PM
To: amsat-bb@xxxxx.xxx
Cc: Zachary Beougher
Subject: More ND9M/MM Videos
Hi!
Here are a couple other videos of Jim?s ship (well, the ship he is on ;-)).
The first is Jim?s ship entering the Gatun Locks, and the second is when he
is exiting: Gatun Locks
73!
Zack
KD8KSN
------------------------------
Message: 7
Date: Wed, 23 Mar 2011 21:38:17 -0400 (GMT-04:00)
From: Andrew Glasbrenner <glasbrenner@xxxxxxxxxx.xxx>
Subject: [amsat-bb] DX spots and old idea
To: amsat-bb <amsat-bb@xxxxx.xxx>
Message-ID:
<14379070.1300930698354.JavaMail.root@xxxxxxxxxxxxx.xxx.xx.xxxxxxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
I was looking at the cluster tonight and noticed where LU6QI had spotted
ND9M, then I spotted him on a later pass. It made me think it might be fun
to pick a pass of say FO-29, and originate a message from say the Mideast,
which gets passed to Europe, then to the northeast US, then say Florida ;-),
then to Central America, then to South America. Sort of like the parlor game
where you pass a secret around the room. Yes I realize this is traffic
handling, and some folks do it all the time on HF, but for some reason it
amused me the idea of leapfrogging along the ground track of a bird. It's
sort of what we have done with the AO-51 Sputnik and Apollo events, only two
way.
I'm sure someone will be right along to tear it to shreds.
73, Drew KO4MA
------------------------------
Message: 8
Date: Thu, 24 Mar 2011 01:40:04 -0000
From: "Clary, James T, Civilian" <James.T.Clary.civ@xxx.xxxx.xxx>
Subject: [amsat-bb] ND9M/MM Op Sked: 24 March
To: <amsat-bb@xxxxx.xxx>
Message-ID:
<91BA9771DE57884FBCD59E08A62C65A8881E2F@xxxxxxxxxxxx.xxxxxxxx.xxx.xxxx.xxx>
Content-Type: text/plain; charset="us-ascii"
Many tks to everyone who sent screen captures and video clips of my ship
transiting the Panama Canal today. Although I've been sailing for a long
time, this was my first time through the canal and a very exciting day
for me. (Remember when this area was KZ5, now a deleted DXCC country?)
Plus I was able to put a couple new grid squares into a bunch of logs to
boot, so win-win! I operated the FO29 pass at 23/2126Z and AO51 pass a
few minutes later from the middle lock at Gatun Locks in FJ09; the ship
was literally going down at the time, but only by virtue of the water
level being lowered as we approached the Atlantic side of the canal.
We've since cleared the canal and are now fully into the Caribbean. Our
route to Jacksonville will be around the western end of Cuba so that we
can pick up the Gulf Stream near the Florida Keys; the Stream will push
us along by adding about 15 percent to our speed. Since we're on a fixed
ETA, we'll ease back on the engines a bit so that they don't have to
work quite as hard, not to mention not burn as much fuel.
We're due into Jacksonville next Tuesday, 29/3.
On an unrelated note, congrats to Allen, N5AFV on making his 50,000th
satellite contact early this morning; that's quite an accomplishment!
Our course over the next 24 hours will be almost due north, so we'll
cross into a new grid square about every five hours.
Here's my planned op sked for tonight and tomorrow:
Planned
VO52 - 24/0208Z - FK00 - only pass this grid
FO29 - 24/0904Z - FK01
AO51 - 24/0951Z - FK01
FO29 - 24/2216Z - FK04
AO51 - 24/2229Z - FK04
AO7 - 24/2256Z - FK04
VO52 - 25/0052Z FK04
VO52 - 25/0228Z - FK05 - only pass this grid
Probable, but not certain
AO7 - 24/1216Z - FK02 - probably the only pass this grid
AO27 - 24/1916Z - FK03 - Approx turn on time; 3-minute window starting
at 16 degrees & going down
FO29 - 24/2030Z - FK03 or FK04
AO51 - 24/2049Z - FK03 or FK04
------------------------------
Message: 9
Date: Thu, 24 Mar 2011 11:01:53 -0700
From: "Ted" <k7trkradio@xxxxxxx.xxx>
Subject: [amsat-bb] Re: Antenna discussions
To: <GW1FKY@xxx.xxx>, <amsat-bb@xxxxx.xxx>
Message-ID: <6769B1F92D4C4E118C90FE876BC53B58@xxxxxxxxxxx>
Content-Type: text/plain; charset="us-ascii"
Agree !!
Along those lines, before I put up my Kenpro az/el rotor, I plan on testing
various locations using my Elk with a fixed el but on a small rat sh----
Message: 10
Date: Thu, 24 Mar 2011 14:18:26 -0400
From: Dee <morsesat@xxxxxxxxx.xxx>
Subject: [amsat-bb] Re: Antenna discussions
To: "'Ted'" <k7trkradio@xxxxxxx.xxx>, GW1FKY@xxx.xxxx
amsat-bb@xxxxx.xxx
Message-ID: <FE7D07C1C4AE4F1DBB934CEAC38CD986@xxxxxxxx>
Content-Type: text/plain; charset=us-ascii
The actual fixed elevation on the AZ rotor is determined by the beam width
of the yagi antenna used. If at all possible, all the calculations based on
the average pass elevation is near 30 degrees. If you believe that you will
use lower passes, say if the beam width is 25 degrees, putting it fixed at
about 20degrees gives you the split of + - 12.5 degrees. It IS a tradeoff.
The higher the gain of the Yagi, the lower the beam width.
Good Luck...
Dee, NB2F
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of Ted
Sent: Thursday, March 24, 2011 2:02 PM
To: GW1FKY@xxx.xxxx amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: Antenna discussions
Agree !!
Along those lines, before I put up my Kenpro az/el rotor, I plan on testing
various locations using my Elk with a fixed el but on a small rat shack
rotor for az. I have seen here recommendations for 15 deg and some for 30
deg fixed el. Thus there seems to be 2 schools of thought on this. Is there
any compelling argument for one or the other? I'm almost inclined to split
the diff at +-22 deg. (most passes for me are N/S and to the E - not so good
to W
Any thoughts appreciated
73, Ted, K7TRK
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of GW1FKY@xxx.xxx
Sent: Saturday, March 19, 2011 2:36 AM
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: Antenna discussions
Hi all,
Regarding the discussions on antennas - I am not into any debate about the
pro's and con's, but would just like to encourage anyone to just have a go.
Sure the argument will always prevail perhaps under the " Must do Better"
comment and I am sure
that one can always improve or progress with experimenting - ( AMATEUR
RADIO )
_______________________________________________
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: 11
Date: Thu, 24 Mar 2011 14:42:24 -0400
From: "Stephen E. Belter" <seb@xxxxxx.xxx>
Subject: [amsat-bb] Re: Antenna discussions
To: Dee <morsesat@xxxxxxxxx.xxx>, "'Ted'" <k7trkradio@xxxxxxx.xxx>,
"GW1FKY@xxx.xxxx <GW1FKY@xxx.xxx>, "amsat-bb@xxxxx.xxxx
<amsat-bb@xxxxx.xxx>
Message-ID:
<51668A33220E754EABE6583357ECEE2D6F781DF2@xxxxxxxx.xxxxxx.xxxxx>
Content-Type: text/plain; charset="us-ascii"
I agree with Dee, but I'll add my opin>
> The actual fixed elevation on the AZ rotor is determined by the beam width
> of the yagi antenna used. If at all possible, all the calculations based on
> the average pass elevation is near 30 degrees. If you believe that you will
> use lower passes, say if the beam width is 25 degrees, putting it fixed at
> about 20degrees gives you the split of + - 12.5 degrees. It IS a tradeoff.
> The higher the gain of the Yagi, the lower the beam width.
> Good Luck...
> Dee, NB2F
>
> -----Original Message-----
> From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-
> bounces@xxxxx.xxxx On
> Behalf Of Ted
> Sent: Thursday, March 24, 2011 2:02 PM
> To: GW1FKY@xxx.xxxx amsat-bb@xxxxx.xxx
> Subject: [amsat-bb] Re: Antenna discussions
>
> Agree !!
>
> Along those lines, before I put up my Kenpro az/el rotor, I plan on testing
> various locations using my Elk with a fixed el but on a small rat shack
> rotor for az. I have seen here recommendations for 15 deg and some for 30
> deg fixed el. Thus there seems to be 2 schools of thought on this. Is there
> any compelling argument for one or the other? I'm almost inclined to split
> the diff at +-22 deg. (most passes for me are N/S and to the E - not so good
> to W
>
> Any thoughts appreciated
>
> 73, Ted, K7TRK
>
> -----Original Message-----
> From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-
> bounces@xxxxx.xxxx On
> Behalf Of GW1FKY@xxx.xxx
> Sent: Saturday, March 19, 2011 2:36 AM
> To: amsat-bb@xxxxx.xxx
> Subject: [amsat-bb] Re: Antenna discussions
>
> Hi all,
> Regarding the discussions on antennas - I am not into any debate about the
> pro's and con's, but would just like to encourage anyone to just have a go.
> Sure the argument will always prevail perhaps under the " Must do Better"
> comment and I am sure
> that one can always improve or progress with experimenting - ( AMATEUR
> RADIO )
>
>
> _______________________________________________
> 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 member? Join now to support the amateur satellite program!
http://amsat.org/mailman/listinfo/amsat-bb
End of AMSAT-BB Digest, Vol 6, Issue 171
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