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CX2SA > SATDIG 09.02.12 21:13l 349 Lines 11385 Bytes #999 (0) @ WW
BID : AMSATBB766
Read: GUEST
Subj: AMSAT-BB-digest V7 66
Path: IZ3LSV<IW0QNL<IK6ZDE<VE2PKT<F1BBI<CX2SA
Sent: 120209/2004Z @:CX2SA.SAL.URY.SA #:50315 [Salto] FBB7.00e $:AMSATBB766
From: CX2SA@CX2SA.SAL.URY.SA
To : SATDIG@WW
Today's Topics:
1. Re: So50 Ao27 (Clint Bradford)
2. Re: AMSAT-BB Digest, Vol 7, Issue 65 (Burns Fisher)
3. Re: AMSAT-BB Digest, Vol 7, Issue 65 (Alan P. Biddle)
4. New Pictures Of Martian Landers (B J)
5. HamSatDroid (jerry keeton)
6. ISS 437.550 Packet (Kevin Deane)
7. ISS packet (Daniel)
8. Re: 437.550 Packet (VK2MAL)
9. 145.825 MHz APRS on Katy to Nanjing Balloon (Trevor .)
----------------------------------------------------------------------
Message: 1
Date: Wed, 08 Feb 2012 12:14:32 -0800
From: Clint Bradford <clintbradford@xxx.xxx>
To: AMSAT BB <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: So50 Ao27
Message-ID: <77F9CF94-4513-4A4A-9027-BE603C48B168@xxx.xxx>
Content-Type: text/plain; CHARSET=US-ASCII
Here's a Web site to get you back on the FM LEOs with your HT ...
http://www.work-sat.com
SO-50 should be workable for you, as well as the ISS. Checking passes of
AO-27 is a two-step process - pass data AND checking its schedule. All the
links you need are on that Web site!
Clint Bradford, K6LCS
------------------------------
Message: 2
Date: Wed, 8 Feb 2012 15:33:11 -0500
From: Burns Fisher <burns@xxxxxx.xx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: AMSAT-BB Digest, Vol 7, Issue 65
Message-ID:
<CABX7KxWHtKFTZLfGz=T9HvfCbFkY+9KE0q7O59rC4QQ_eXEvqQ@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
Here are a couple things that were less than obvious to me about the ARR
70CM switched preamp.
If you are going to power it with phantom power (i.e. up the feed line) you
need to add a -C to the part number so they will add in the required choke
from the feed line to the power input. But note that once you do this, you
can't just use either phantom or external power. In my case, I got the
choke ("I might need it someday") but used the external power. Oops...a
nice short. It turns out that unless your transceiver has a high-pass
filter (or just a cap!) you are probably going to be shorting out back
through the feed line. When you do that, you may blow the choke and have
to remove it anyway, depending on how much current got through it. (I'm not
sure why they did not put a diode in, but hey...)
The other thing is that I was going to get one of their phantom power
injectors also. The problem there is that they only work with
receive-only. So unless you can find one elsewhere, phantom power may be
useful mainly if you transceiver supplies it (sigh, mine does not).
And finally, another inobvious thing: The power connector has a third pin
which, if you ground it, switches to transmit mode. So if you hook this up
to the transciever, that's a way of getting around the "minimum power to
switch" spec. (I think minimum power to switch is maybe 5W; my transceiver
goes down to 5W, but with a 75' feed line, it's not gong to be 5W by the
time it gets to the pre amp.
The SSB preamp (or at least the 2M one that I have) comes with the choke,
diode, etc and has a lower minimum switching power. It is more expensive,
though.
I hope this helps!
Burns, W2BFJ
> ------------------------------
>
> Message: 6
> Date: Tue, 7 Feb 2012 22:56:04 -0500
> From: "Mike Ryan" <mryan301@xxxxxxx.xxx>
> To: <amsat-bb@xxxxx.xxx>
> Subject: [amsat-bb] Re: Receive Pre-Amps for 70cm
> Message-ID: <89830E8A0C73460A9F511377C4656703@xxxxxxxxx>
> Content-Type: text/plain; format=flowed; charset="UTF-8";
> reply-type=original
>
> I second the comment about getting a switched one. Unless you have a
> dedicated RX or have disabled the TX, you will certainly pop a RX only amp.
> Its just a matter of when. Happened to me twice before admitting my
> clumsiness.
>
> I've had very good luck with the ARR switched amps. I have two for 70 cm
> (one for the shack and one for my Arrow) and a 2M version as well. If the
> unit is to be in the attic, you can save some money by going for the inside
> 25 watt switched model (SP432VDG). Just don?t exceed the 25 watts. Also be
> aware that the FETs in these amps are sensitive, even on a switched model.
> Make sure your rig is completed powered off and your body grounded (to
> bleed
> off static electricity) before connecting or disconnecting antenna
> connectors. Its tempting to save a trip to the shack by leaving the rig
> on
> and do a quick swap, but don?t do it :(
>
>
> -----
>
> Date: Mon, 6 Feb 2012 15:40:37 -0600
> From: "Alan P. Biddle" <APBIDDLE@xxxxxx.xxx>
> To: "'PETER SIMONSEN'" <pureenduro@xxx.xxx>, <amsat-bb@xxxxx.xxx>
> Subject: [amsat-bb] Re: Receive Pre-Amps for 70cm
> Message-ID: <86B0819F8E944465B5B0C98010D7AAB7@xxxxxx>
> Content-Type: text/plain; charset="us-ascii"
>
> Peter,
>
> A 70 cm preamp is always useful! There are a lot of them out there, but my
> experience is that ARR and SSB Electronics make the best. Definitely not
> the cheapest, though.
>
> http://advancedreceiver.com/page2.html
>
> http://www.ssbusa.com/gaasfet.html
>
> Be certain to get one which is RF switched, and which will handle your
> rig's
> power. No matter how careful you are, you WILL transmit into it someday.
> Been there, done that.
>
> You will need to split your single antenna jack on the rig to two lines.
> Almost any diplexer gives 50 db+ separation, but there are a few which are
> only 30 db or so. Worth checking.
>
> 73s,
>
> Alan
> WA4SCA
>
>
>
>
------------------------------
Message: 3
Date: Wed, 8 Feb 2012 15:23:30 -0600
From: "Alan P. Biddle" <APBIDDLE@xxxxxx.xxx>
To: "'Burns Fisher'" <burns@xxxxxx.xx>, <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: AMSAT-BB Digest, Vol 7, Issue 65
Message-ID: <0C92A0326637431A8EDE0ED7860BAF8D@xxxxxx>
Content-Type: text/plain; charset="us-ascii"
Burns,
I had the same experience with my ARR. Fortunately no harm done. I ended
up lifting the choke connection internally. Apparently ARR has never heard
of steering diodes.
My other issue was that the "waterproof" case filled up with water. You can
imagine my face, and vocabulary, when I opened it on the work table. Easily
fixed with RTV. Another reason I personally prefer the SSB units.
Alan
WA4SCA
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of Burns Fisher
Sent: Wednesday, February 08, 2012 2:33 PM
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: AMSAT-BB Digest, Vol 7, Issue 65
Here are a couple things that were less than obvious to me about the ARR
70CM switched preamp.
If you are going to power it with phantom power (i.e. up the feed line) you
need to add a -C to the part number so they will add in the required choke
from the feed line to the power input. But note that once you do this, you
can't just use either phantom or external power. In my case, I got the
choke ("I might need it someday") but used the external power. Oops...a
nice short. It turns out that unless your transceiver has a high-pass
filter (or just a cap!) you are probably going to be shorting out back
through the feed line. When you do that, you may blow the choke and have
to remove it anyway, depending on how much current got through it. (I'm not
sure why they did not put a diode in, but hey...)
The other thing is that I was going to get one of their phantom power
injectors also. The problem there is that they only work with
receive-only. So unless you can find one elsewhere, phantom power may be
useful mainly if you transceiver supplies it (sigh, mine does not).
And finally, another inobvious thing: The power connector has a third pin
which, if you ground it, switches to transmit mode. So if you hook this up
to the transciever, that's a way of getting around the "minimum power to
switch" spec. (I think minimum power to switch is maybe 5W; my transceiver
goes down to 5W, but with a 75' feed line, it's not gong to be 5W by the
time it gets to the pre amp.
The SSB preamp (or at least the 2M one that I have) comes with the choke,
diode, etc and has a lower minimum switching power. It is more expensive,
though.
I hope this helps!
Burns, W2BFJ
------------------------------
Message: 4
Date: Wed, 8 Feb 2012 23:00:29 +0000
From: B J <va6bmj@xxxxx.xxx>
To: amsat-bb <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] New Pictures Of Martian Landers
Message-ID:
<CAP7QzkM8n052Vy-pp=kbYoKtiY+y6GKQvppa0hbcbdKeGpBQgg@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
http://www.jpl.nasa.gov/news/news.cfm?release=2012-037&cid=release_2012-037&ms
ource=12037&tr=y&auid=10267838
------------------------------
Message: 5
Date: Wed, 8 Feb 2012 19:50:11 -0600
From: "jerry keeton" <jkboxk@xxxxxxxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] HamSatDroid
Message-ID: <57BC9EE75F934C0A8D4282B684762281@xxxxxxx>
Content-Type: text/plain; charset="iso-8859-1"
I have a Motorola Milestone , just updated to version 8.0 . Both worked very
well . Only thing
I would like to see added would be Beacon Frequiencies fo each satellite .
Thanks Guys for a great APP.
------------------------------
Message: 6
Date: Wed, 8 Feb 2012 19:24:10 -0800
From: Kevin Deane <summit496@xxxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] ISS 437.550 Packet
Message-ID: <COL107-W2143FCD31F2366AFF87EB5837B0@xxx.xxx>
Content-Type: text/plain; charset="iso-8859-1"
For anyone that might be interested Packet is working on the 437.550 Unproto
ARISS or RS0ISS Looks like the 145.825 RS0ISS-4 has been of for awhile but
thats the norm for that one.
Kevin
KF7MYK
------------------------------
Message: 7
Date: Wed, 8 Feb 2012 19:42:03 -0800
From: "Daniel" <kf1buz@xxxxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] ISS packet
Message-ID: <000801cce6dc$ca924940$5fb6dbc0$@xxx>
Content-Type: text/plain; charset="us-ascii"
Hey all it seems that the ISS is doing packet on 437.550 KF7MYK and myself
just sent packets Back and forth on that freq and heard the ISS making its
wonderful noises,
Dan,
------------------------------
Message: 8
Date: Thu, 9 Feb 2012 21:29:36 +1100
From: VK2MAL <vk2mal@xxxxx.xxx.xx>
To: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: 437.550 Packet
Message-ID: <E7F216F3-290E-4066-9459-7934D48B336D@xxxxx.xxx.xx>
Content-Type: text/plain; charset=us-ascii
I have accessed the 70cm Packet system a few times the last week or so.
There seems to be no one else down here using it across VK.
Interesting that the 70cm Ericson packet system is left on when the 2m
Kenwood system is off.
Mal - VK2MAL
Sent from my iPhone
------------------------------
Message: 9
Date: Thu, 9 Feb 2012 11:49:33 +0000 (GMT)
From: "Trevor ." <m5aka@xxxxx.xx.xx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] 145.825 MHz APRS on Katy to Nanjing Balloon
Message-ID:
<1328788173.32515.YahooMailClassic@xxxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=utf-8
The kt5tk-11 balloon will be using the ISS Digipeater frequency of 145.825
MHz while in mid-Atlantic on its journey from Texas to China. See
http://www.uk.amsat.org/4505
Launch date 3pm CST Feb. 11
73 Trevor M5AKA
------------------------------
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End of AMSAT-BB Digest, Vol 7, Issue 66
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