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CX2SA > SATDIG 01.04.08 08:00l 680 Lines 23280 Bytes #999 (0) @ WW
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Subj: AMSAT-BB-digest V3 160
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From: CX2SA@CX2SA.LAV.URY.SA
To : SATDIG@WW
Today's Topics:
1. Re: FT-817 use on AO16 (Mark L. Hammond)
2. Re: FT-817 use on AO16 (w4upd)
3. AO-16 and 5-watts (DeYoung James)
4. cushcraft "416" PS-4 query (w0dxz(AT)aol.com)
5. Re: FT-817 use on AO16 (John Marranca, Jr)
6. Downlink issue with Icom IC-910H (Ronald Nutter)
7. Re: Downlink issue with Icom IC-910H (Jeff Mock)
8. Re: Downlink issue with Icom IC-910H (Ronald Nutter)
9. Preamp for a Mobile Application (Kent R. Frazier)
10. Re: Preamp for a Mobile Application (Bill Dzurilla)
11. Re: Preamp for a Mobile Application (Ronald Nutter)
12. LMR 600 (Bill Bruno)
13. Yaesu rotor connectors (Gould Smith)
14. Re: FT-817 use on AO16 (Chris Bloy)
15. ARR pre amp Query (w0dxz(AT)aol.com)
16. Re: GVLB Tracker and Yaesu rotors (Howard Long)
17. Re: ARR pre amp Query (K7WIN - Jeff)
----------------------------------------------------------------------
Message: 1
Date: Sun, 30 Mar 2008 17:18:25 -0400
From: "Mark L. Hammond" <n8mh(AT)embarqmail.com>
Subject: [amsat-bb] Re: FT-817 use on AO16
To: amsat-bb(AT)amsat.org, chris(AT)photofuture.co.uk
Message-ID: <2B.CB.03454.1A300F74(AT)smtp07.embarq.synacor.com>
Content-Type: text/plain; charset="us-ascii"
Hi Chris,
While I haven't used an FT-817, I have worked AO-16 on 5 watts--through my
'short' M2 2M antenna.
Of course, it's all about gain--so where you are sending that 5 watts (a mag
mount or 12dB gain array??) makes all the difference in the world...
The receiver on AO-16 is quite sensitive. Just now, I heard many VHF
telephones from South/Central America/Caribbean coming through the bird :)
73,
Mark N8MH
At 01:00 PM 3/30/2008 -0700, you wrote:
>Date: Sun, 30 Mar 2008 18:42:33 +0100
>From: "Chris Bloy" <chris(AT)photofuture.co.uk>
>Subject: [amsat-bb] FT-817 use on AO16
>To: <amsat-bb(AT)amsat.org>
>Message-ID: <00c801c8928d$6f3111f0$4d9335d0$(AT)co.uk>
>Content-Type: text/plain; charset="Windows-1252"
>
>Hi all
>
>Has anyone used an FT-817 on AO-16?
>
>I am having issues getting into the repeater, I think partly due to the
>amount of stations trying to access! But has anyone managed with 5 watts?
>
>Thanks,
>
>Chris - M0DQO
Mark L. Hammond [N8MH]
------------------------------
Message: 2
Date: Sun, 30 Mar 2008 15:30:25 -0600
From: w4upd <w4upd(AT)bristor-assoc.com>
Subject: [amsat-bb] Re: FT-817 use on AO16
To: Chris Bloy <chris(AT)photofuture.co.uk>
Cc: amsat-bb(AT)amsat.org
Message-ID: <47F00671.5060901(AT)bristor-assoc.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
I have used mine and worked through AO-16. It was a little tough but
doable. As stated, AO-16's receiver is quite sensitive. I forget who it
was, but when I was running my FT-817 for the uplink, someone I had a
contact with was running a pair for both up and down link and was doing
rather well. So I'd say it is doable. The better the antenna, the better
you'll do as well and be able to use the FT-817. I normally use my
Kenwood pairs TS711/811 but wanted to try the FT-817 and was rather
surprised on my success.
Reid, W4UPD
Chris Bloy wrote:
> Hi all
>
> Has anyone used an FT-817 on AO-16?
>
> I am having issues getting into the repeater, I think partly due to the
> amount of stations trying to access! But has anyone managed with 5 watts?
>
> Thanks,
>
> Chris - M0DQO
>
>
> _______________________________________________
> Sent via AMSAT-BB(AT)amsat.org. 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: Sun, 30 Mar 2008 15:56:43 -0700 (PDT)
From: DeYoung James <deyoung_james(AT)yahoo.com>
Subject: [amsat-bb] AO-16 and 5-watts
To: amsat-bb <amsat-bb(AT)amsat.org>
Message-ID: <268513.58735.qm(AT)web51104.mail.re2.yahoo.com>
Content-Type: text/plain; charset=iso-8859-1
Greetings,
On AO-16 I usually can hear myself when AO-16 is above
about 10-degrees using 5-watts from an IC-910H and an
arrow antenna, however others appear not to hear me as
well as I hear myself so I usually have to crank'er up
to 10-watts... early and late in a pass.
Today AO-16 was full of hets, gurgles, burbles,
clicks, and off frequency signals (QRM) even more than
normal when to the south as noted in another
submission. Surprising to me was that SO-50 with PL
tone access was full of the same, no hets, of course.
I have to say these 2-m uplink satellites are rapidly
becoming unusable from the RF uplink anarchy going on
inside the footprints.
I have always wanted to use the word anarchy in a
AMSAT-BB email and there I've finally done it! Hi!
73, KG4QWC
______________________________________________________________________________
______
Special deal for Yahoo! users & friends - No Cost. Get a month of Blockbuster
Total Access now
http://tc.deals.yahoo.com/tc/blockbuster/text3.com
------------------------------
Message: 4
Date: Sun, 30 Mar 2008 19:23:01 -0400
From: w0dxz(AT)aol.com
Subject: [amsat-bb] cushcraft "416" PS-4 query
To: amsat-bb(AT)amsat.org
Message-ID: <8CA60D421DC5DB9-1680-F93(AT)webmail-nb20.sysops.aol.com>
Content-Type: text/plain; charset="us-ascii"
OK, I figured out that the antenna I was given/bought is an old CushCraft 432
circularly polarized antenna...? model 416 something... it also has the
optional PS-4 polarity switcher on it.
What is this switcher,,, looks like a gray box , some type of connector? (8
pin?)? goes on the bottom,,,I dont have the connector/control line for the
switcher.
If I hook it up and use it? without using the PS-4,,, will ? have RHC only??
LHC only? or will it work at all ,just not hooking up the PS-4 ??
Any one have one of these, can tell me about the RS-4 switch?
Bob
W0DXZ
DM33AZ
------------------------------
Message: 5
Date: Sun, 30 Mar 2008 19:50:55 -0400
From: "John Marranca, Jr" <KB2HSH(AT)amsat.org>
Subject: [amsat-bb] Re: FT-817 use on AO16
To: amsat-bb(AT)amsat.org
Message-ID:
<8edcdb130803301650v1343efa5n66fb5eacaa7d6521(AT)mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1
Hello everyone.
Working AO-16 with an '817 is exceptionally easy...and I do it daily. In
fact yesterday morning, I had a very enjoyable QSO (not the quick "grid
square" type contact) with Allen, N5AFV throughout the ENTIRE pass.
I have even cranked my '817 back to 3 watts and done it.
Good Luck!
John KB2HSH
_______________________________
John Marranca, Jr
PBX Technician/Shop Steward CWA Local 1122
BN Systems, Inc
Orchard Park, NY
(716)972-2006
------------------------------
Message: 6
Date: Sun, 30 Mar 2008 21:07:51 -0500
From: Ronald Nutter <rnutter(AT)networkref.com>
Subject: [amsat-bb] Downlink issue with Icom IC-910H
To: amsat-bb(AT)amsat.org
Message-ID: <47F04777.5000802(AT)networkref.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
After not having used my IC-910H for a while due to moving across
country, I unpacked it tonight and setup my antennas. I was able to
make contacts on SO-50 and AO-51 with one small problem. I can hear
signals on the downlink but not mine. When I transmitted, all I could
hear was some white noise when I was transmitting. I head several
exchanges but it was like I was in half duplex. This was a working
system before the move.
I have good quality coax running from the IC-910H to an ICOM preamp for
each side (VHF or UHF) and then running to the antennas. I believe that
I have used all of the original coax but I could be wrong. The only
thing I havent put in place was my mode J filter on the UHF downlink.
Could this be causing my problem with not hearing my signal on the
downlink but hearing those who are calling me ? Sorry for what is
probably a stupid question but I am getting all the kinks worked out in
my setup before Field Day.
Thanks,
Ron
------------------------------
Message: 7
Date: Sun, 30 Mar 2008 19:55:20 -0700
From: Jeff Mock <jeff(AT)mock.com>
Subject: [amsat-bb] Re: Downlink issue with Icom IC-910H
To: Ronald Nutter <rnutter(AT)networkref.com>
Cc: amsat-bb(AT)amsat.org
Message-ID: <47F05298.9050608(AT)mock.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Ronald Nutter wrote:
> After not having used my IC-910H for a while due to moving across
> country, I unpacked it tonight and setup my antennas. I was able to
> make contacts on SO-50 and AO-51 with one small problem. I can hear
> signals on the downlink but not mine. When I transmitted, all I could
> hear was some white noise when I was transmitting. I head several
> exchanges but it was like I was in half duplex. This was a working
> system before the move.
>
> I have good quality coax running from the IC-910H to an ICOM preamp for
> each side (VHF or UHF) and then running to the antennas. I believe that
> I have used all of the original coax but I could be wrong. The only
> thing I havent put in place was my mode J filter on the UHF downlink.
> Could this be causing my problem with not hearing my signal on the
> downlink but hearing those who are calling me ? Sorry for what is
> probably a stupid question but I am getting all the kinks worked out in
> my setup before Field Day.
>
I think the lack of a filter on the 70cm downlink might be the problem.
I started out without any filter on the 70cm downlink, I added a DCI
70cm bandpass filter because of local QRM from commercial radios and it
also improved my ability to hear the downlink on my 910H. As you
suspect, the 2m transmit might be desensing the 70cm receiver or preamp.
I tested this by listening to a weak faraway 70cm repeater while
transmitting on a clear portion of the 2m band. You can do this with
and without the 70cm preamp and hear if the receiver is desensing. I
found that the filter made my troubles go away.
jeff
AD6EO
------------------------------
Message: 8
Date: Sun, 30 Mar 2008 22:19:50 -0500
From: Ronald Nutter <rnutter(AT)networkref.com>
Subject: [amsat-bb] Re: Downlink issue with Icom IC-910H
To: Jeff Mock <jeff(AT)mock.com>
Cc: amsat-bb(AT)amsat.org
Message-ID: <47F05856.20805(AT)networkref.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Jeff/Bruce:
Thanks to both of you for your reply. I put things together kinda quick
today, so I skipped the one little step about putting the filter in. I
am using UHF side of a Comet CF-160 Duplexer. At some point I might
change to a "dedicated" filter but since I have been recently laid off,
that expense will need to wait a while.
Thanks,
Ron
Jeff Mock wrote:
>
>
> Ronald Nutter wrote:
>> After not having used my IC-910H for a while due to moving across
>> country, I unpacked it tonight and setup my antennas. I was able to
>> make contacts on SO-50 and AO-51 with one small problem. I can hear
>> signals on the downlink but not mine. When I transmitted, all I could
>> hear was some white noise when I was transmitting. I head several
>> exchanges but it was like I was in half duplex. This was a working
>> system before the move.
>>
>> I have good quality coax running from the IC-910H to an ICOM preamp
>> for each side (VHF or UHF) and then running to the antennas. I
>> believe that I have used all of the original coax but I could be
>> wrong. The only thing I havent put in place was my mode J filter on
>> the UHF downlink. Could this be causing my problem with not hearing my
>> signal on the downlink but hearing those who are calling me ? Sorry
>> for what is probably a stupid question but I am getting all the kinks
>> worked out in my setup before Field Day.
>>
>
> I think the lack of a filter on the 70cm downlink might be the problem.
> I started out without any filter on the 70cm downlink, I added a DCI
> 70cm bandpass filter because of local QRM from commercial radios and it
> also improved my ability to hear the downlink on my 910H. As you
> suspect, the 2m transmit might be desensing the 70cm receiver or preamp.
>
> I tested this by listening to a weak faraway 70cm repeater while
> transmitting on a clear portion of the 2m band. You can do this with
> and without the 70cm preamp and hear if the receiver is desensing. I
> found that the filter made my troubles go away.
>
> jeff
> AD6EO
>
------------------------------
Message: 9
Date: Mon, 31 Mar 2008 07:12:27 -0500
From: "Kent R. Frazier" <k5knt(AT)amsat.org>
Subject: [amsat-bb] Preamp for a Mobile Application
To: AMSAT-BB <amsat-bb(AT)amsat.org>
Message-ID:
<7caa889a0803310512r61dc5af0td3ee32b4770d88d6(AT)mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1
Hi all,
I am really enjoying the satellite aspect of the hobby and have enjoyed the
contacts I have made with my Icom IC-2720H with a 19" whip antenna from my
vehicle. I have seen talk recently of using a preamp to improve the
reception. From what I've read and understand, it appears that a "switching"
preamp is needed for a setup using only one antenna for Tx and Rx such as
mine. Is this correct?
It also appears that most of the preamps are mast mounted. Since this would
not be an option for me can the preamp be put near the transceiver? Are
there any issues that result of doing so?
Lastly, what preamp(s) would you recommend for an application such as mine?
Thanks,
Kent
--
Kent R. Frazier, K5KNT
------------------------------
Message: 10
Date: Mon, 31 Mar 2008 07:01:03 -0700 (PDT)
From: Bill Dzurilla <billdz.geo(AT)yahoo.com>
Subject: [amsat-bb] Re: Preamp for a Mobile Application
To: fm-satellite(AT)yahoogroups.com
Cc: amsat-bb(AT)amsat.org
Message-ID: <709451.40453.qm(AT)web51102.mail.re2.yahoo.com>
Content-Type: text/plain; charset=iso-8859-1
Kent,
Never tried it, but I doubt a preamp would be worth
the expense if mounted at the rig in a mobil set-up.
I assume the feedline is only 10' or so. The preamp
helps most when the feedline is lengthy, especially if
cheap coax is used.
If you want to try a switching preamp, the ARR
SP432VDG is a good one, see
http://www.advancedreceiver.com/page7.html
For about the same price, you could buy an Arrow
handheld yagi antenna, which would substantially
improve both reception and transmission. See
http://www.arrowantennas.com/146-437.html , although
if the rig is fixed inside your car if might not be
convenient to hold the Arrow, unless your mike cord is
long enough so you can stand outside the car.
If you are limited to operating from the car, try
driving to a hilltop or somewhere with a clear view
from horizon to horizon.
73, Bill NZ5N
______________________________________________________________________________
______
Like movies? Here's a limited-time offer: Blockbuster Total Access for one
month at no cost.
http://tc.deals.yahoo.com/tc/blockbuster/text4.com
------------------------------
Message: 11
Date: Mon, 31 Mar 2008 09:03:28 -0500
From: Ronald Nutter <rnutter(AT)networkref.com>
Subject: [amsat-bb] Re: Preamp for a Mobile Application
To: "Kent R. Frazier" <k5knt(AT)amsat.org>
Cc: AMSAT-BB <amsat-bb(AT)amsat.org>
Message-ID: <47F0EF30.9080100(AT)networkref.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
I have used a Comet CF-160 duplexer to split the vhf and uhf to seperate
antennas. From the UHF side, I used a 3 element uhf beam with no
amplifier and have had very good results with all the FM birds. In most
cases I used a 1/4 wave mag mount on vhf for the uplink.
In a mobile situation, I dont know that it is that critical where the
amplifier is mounted since the coax run will be less than 15 ft in most
cases. I have used advanced receiver research amplifiers which are in a
2x2x.5 form factor. I think they have a switching amp model as well.
Ron
KA4KYI
AMSAT Mo Coordinator
Kent R. Frazier wrote:
> Hi all,
>
> I am really enjoying the satellite aspect of the hobby and have enjoyed the
> contacts I have made with my Icom IC-2720H with a 19" whip antenna from my
> vehicle. I have seen talk recently of using a preamp to improve the
> reception. From what I've read and understand, it appears that a "switching"
> preamp is needed for a setup using only one antenna for Tx and Rx such as
> mine. Is this correct?
>
> It also appears that most of the preamps are mast mounted. Since this would
> not be an option for me can the preamp be put near the transceiver? Are
> there any issues that result of doing so?
>
> Lastly, what preamp(s) would you recommend for an application such as mine?
>
>
> Thanks,
>
> Kent
>
------------------------------
Message: 12
Date: Mon, 31 Mar 2008 10:53:21 -0400
From: "Bill Bruno" <billbruno(AT)earthlink.net>
Subject: [amsat-bb] LMR 600
To: "Amsat-bb(AT)amsat.org" <amsat-bb(AT)amsat.org>
Message-ID: <004d01c8933e$f6dd8ff0$0300a8c0(AT)billslaptop>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
I have 100' of LMR ultra flex cable with N connectors. I bought it a few
years ago from cable experts and never used it. It's for sale. I anyone is
interested Please contact me off list.
Bill KB2RC
------------------------------
Message: 13
Date: Mon, 31 Mar 2008 10:54:03 -0400
From: "Gould Smith" <gouldsmi(AT)bellsouth.net>
Subject: [amsat-bb] Yaesu rotor connectors
To: <amsat-bb(AT)amsat.org>
Message-ID: <A532565DBC69487A9EA7B0C1D46ACF9C(AT)GouldMainPC>
Content-Type: text/plain; charset="iso-8859-1"
I am checking to see if there is any interest in AMSAT carrying the Yaesu
5400/5500 rotor connector plugs [the plugs that attach the rotor cable to the
rotor].
If enough interest we can have them at Dayton an carry them in the store.
Reply to my callsign (AT)amsat.org
73,
Gould, WA4SXM
VP User Services
------------------------------
Message: 14
Date: Mon, 31 Mar 2008 15:59:18 +0100
From: "Chris Bloy" <chris(AT)photofuture.co.uk>
Subject: [amsat-bb] Re: FT-817 use on AO16
To: amsat-bb(AT)amsat.org
Message-ID: <WorldClient-F200803311559.AA59180000(AT)photofuture.co.uk>
Content-Type: text/plain; charset=us-ascii
Hi All,
Thank you to those who replied to this, I will have another go this coming
weekend, but I feel that I may stuggle as here in the UK we suffer from
"Europe" and many people not listening so you end up with more people uping
the transmit power to get over people... I have a TH-D7 so I can use the 817
for receiving?
I would like to try my hand at AO-7, but I think perhaps 5 watts may
struggle there too.. my biggest problem is there is no way to install
antenna's at my home due to garden size, so am trying to be good at portable
ops.. I have an arrow antenna and a separate 9 ele 70cms and 4 ele on two
mounted on a manual camera tripod.. I do have an amp/preamp for 2, but i
find that ao16 is very hard to track due to it spinning so need to twist the
antenna!
Anyway, sorry to waffle.. I'll keep at it..
Thanks,
Chris - M0DQO
-----Original Message-----
From: "Mark L. Hammond" <n8mh(AT)embarqmail.com>
To: amsat-bb(AT)amsat.org,chris(AT)photofuture.co.uk
Date: Sun, 30 Mar 2008 17:18:25 -0400
Subject: re: [amsat-bb] FT-817 use on AO16
Hi Chris,
While I haven't used an FT-817, I have worked AO-16 on 5 watts--through my
'short' M2 2M antenna.
Of course, it's all about gain--so where you are sending that 5 watts (a mag
mount or 12dB gain array??) makes all the difference in the world...
The receiver on AO-16 is quite sensitive. Just now, I heard many VHF
telephones from South/Central America/Caribbean coming through the bird :)
73,
Mark N8MH
At 01:00 PM 3/30/2008 -0700, you wrote:
>Date: Sun, 30 Mar 2008 18:42:33 +0100
>From: "Chris Bloy" <chris(AT)photofuture.co.uk>
>Subject: [amsat-bb] FT-817 use on AO16
>To: <amsat-bb(AT)amsat.org>
>Message-ID: <00c801c8928d$6f3111f0$4d9335d0$(AT)co.uk>
>Content-Type: text/plain; charset="Windows-1252"
>
>Hi all
>
>Has anyone used an FT-817 on AO-16?
>
>I am having issues getting into the repeater, I think partly due to the
>amount of stations trying to access! But has anyone managed with 5 watts?
>
>Thanks,
>
>Chris - M0DQO
Mark L. Hammond [N8MH]
------------------------------
Message: 15
Date: Mon, 31 Mar 2008 11:04:00 -0400
From: w0dxz(AT)aol.com
Subject: [amsat-bb] ARR pre amp Query
To: amsat-bb(AT)amsat.org
Message-ID: <8CA61579592500A-12D4-309E(AT)webmail-nb15.sysops.aol.com>
Content-Type: text/plain; charset="us-ascii"
I am thinking aobut ordering an ARR pre amp for 432,,, I see the pin for 12V
DC,,, what type of connector does this take, or do you have to solder the?
wire to the pin? That seems a bit crude.
Canby one use the ARR product, and how do you connect the 12V to it?
Bob
W0DXZ
------------------------------
Message: 16
Date: Mon, 31 Mar 2008 16:20:43 +0100
From: "Howard Long" <howard(AT)howardlong.com>
Subject: [amsat-bb] Re: GVLB Tracker and Yaesu rotors
To: "'Ronald Nutter'" <rnutter(AT)networkref.com>, <amsat-bb(AT)amsat.org>
Message-ID: <003c01c89342$ca9535c0$336aa8c0(AT)LAPTOP9>
Content-Type: text/plain; charset="us-ascii"
Hi Ron
> is it possible to interface the current lvb
> tracker with an az only version of a Yaesu rotor ?
Firstly, sorry for the delay in replying. I've been working in Sydney the
past week and coincidntally my ISP has changed their SMTP authentication
method making outgoing email difficult.
If the Yaesu interface will run off open collector CW/CCW control outputs
and the feedback is a voltage between 0 and 5V then the tracker will work
nicely in Az only. However please be aware that the firmware's not smart
enough to actually realise that an El rotor's not present, so it'll still
present El readings that you can safely ignore.
73, Howard G6LVB
------------------------------
Message: 17
Date: Mon, 31 Mar 2008 09:34:12 -0700
From: "K7WIN - Jeff" <k7win(AT)k7win.net>
Subject: [amsat-bb] Re: ARR pre amp Query
To: <amsat-bb(AT)amsat.org>, <w0dxz(AT)aol.com>
Message-ID: <008c01c8934d$0fb78770$c2295089(AT)nasw.ds.army.mil>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
Hi Bob,
The Advanced Receiver pre-amp that I purchased (MSP432VDG-160) came with the
power connector. You will need to solder the wires to the connector. I found
some old RG-58 that I used to run the power to it.
Very nice pre-amp by the way.
73, Jeff
K7WIN
----- Original Message -----
From: <w0dxz(AT)aol.com>
To: <amsat-bb(AT)amsat.org>
Sent: Monday, March 31, 2008 8:04 AM
Subject: [amsat-bb] ARR pre amp Query
>I am thinking aobut ordering an ARR pre amp for 432,,, I see the pin for
>12V DC,,, what type of connector does this take, or do you have to solder
>the? wire to the pin? That seems a bit crude.
> Canby one use the ARR product, and how do you connect the 12V to it?
> Bob
> W0DXZ
> _______________________________________________
> Sent via AMSAT-BB(AT)amsat.org. 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(AT)amsat.org. 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 3, Issue 160
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