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CX2SA > SATDIG 04.12.11 15:45l 848 Lines 27152 Bytes #999 (0) @ WW
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From: CX2SA@CX2SA.LAV.URY.SA
To : SATDIG@WW
Today's Topics:
1. AO-27 status (George Henry)
2. Re: Remote polarity / preamp switching (i8cvs)
3. thanks for QSOs on Friday and Saturday
(Patrick STODDARD (WD9EWK/VA7EWK))
4. Re: ME (Clint Bradford)
5. Re: Fwd: VO-52 FM Operation (Patrick STODDARD (WD9EWK/VA7EWK))
6. Re: Fw: Stop flaming please (Roger)
7. Re: ME (Jim Shorney)
8. Re: Fw: Stop flaming please (Art McBride)
9. Re: AO-27 status (Greg D.)
10. Re: Stop flaming please (ka9qjg)
11. just a few things (Bob- W7LRD)
12. Apology (andy thomas)
13. Re: Remote polarity / preamp switching (Dominic Hawken)
14. Re: Working SO-50 (Eric Knaps, ON4HF)
15. Articles on Getting Started on SSB Sats (Trevor .)
16. Re: Fwd: VO-52 FM Operation (Gordon JC Pearce)
----------------------------------------------------------------------
Message: 1
Date: Sat, 3 Dec 2011 18:41:17 -0600
From: "George Henry" <ka3hsw@xxx.xxx>
To: "amsat bb" <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] AO-27 status
Message-ID: <8EEC00BE0E254A88B2D3C0D6907CE879@xxxxxxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
Today I received the latest TOPR and EPOCH files for AO-27 from Mike Wyrick,
NU3C, and have uploaded them to the AO-27 Satellite Scheduler website so
that users of the Java scheduler program can update their files. Simply
download them to the same folder that the Scheduler resides in. DO NOT use
the "Update Data" option from within the program, as it will try to connect
to the AO-27 website, which is still down. (They are working to get it back
online.)
George, KA3HSW
http://sites.google.com/site/ao27satellitescheduler/
------------------------------
Message: 2
Date: Sun, 4 Dec 2011 01:58:07 +0100
From: "i8cvs" <domenico.i8cvs@xxx.xx>
To: "Dominic Hawken" <dominic@xxx.xx.xx>, "Amsat - BBs"
<amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: Remote polarity / preamp switching
Message-ID: <003501ccb21f$c9687c20$0401a8c0@xxxxxx>
Content-Type: text/plain; charset="iso-8859-1"
----- Original Message -----
From: "Dominic Hawken" <dominic@xxx.xx.xx>
To: <amsat-bb@xxxxx.xxx>
Sent: Sunday, December 04, 2011 12:54 AM
Subject: [amsat-bb] Remote polarity / preamp switching
I currently have two runs of coax from the shack up to the roof, each
connected to smallish dual band 2/70 yagis, horizontally polarised, on an
az/el rotator. One's connected to the 70cm output of my FT847, and the other
to the 2m output.
>
> I'd like to upgrade to cross-polarised beams for 2 and 70 that I can
switch between vertical, horizontal and circular polarisation, and also add
masthead preamps powered through the coax. Some form of remote switching
seems to be the way to go, but the few commercial switches I've found
googling are really expensive (and I'd need two afaik).
>
I'm basically wanting to upgrade without having to run more coax or power
cable up to the mast if possible - wondering of anyone has done something
similar without breaking the bank.
>
> Thanks in advance tor any help,
>
> Dominic G6NQO.
>
Hi Dominic, G6NQO
Your project is a difficult task on time and money.
BTW in a separate email to you I have attached my articles
"Switching Four Polarizations on a 70 cm crossed yagi"
publisced into the AMSAT Journal March/April 2007 first
part, and May/June 2007 the second part.
73" de
i8CVS Domenico
------------------------------
Message: 3
Date: Sat, 3 Dec 2011 19:43:43 -0800 (PST)
From: "Patrick STODDARD \(WD9EWK/VA7EWK\)" <amsat-bb@xxxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] thanks for QSOs on Friday and Saturday
Message-ID:
<1322970223.53128.YahooMailClassic@xxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=us-ascii
Hi!
After a brief pause in my satellite operating (real life gets in the
way, from time to time), I was able to get on the air for some passes
Friday and today. Thanks for all the QSOs when I was out at the hamfest
in Mesa AZ this morning, and yesterday while on a quick road trip to
southern Arizona.
This morning's hamfest almost was washed out. Just as things were
getting started and I was on an AO-7 pass around 1245 UTC, rain
began to fall. It was a light rain, which ended around the LOS time
on that pass. After that, the crowds - buyers and sellers - started
showing up for the half-day hamfest. I was able to get on 6 different
passes, two each on 3 different satellites (AO-7, SO-50, VO-52). Thanks
to all who worked WD9EWK this morning, and especially for giving more
than just a call and grid - getting a name and QTH helps illustrate the
coverage of our satellites. I apologize to Joe K3SZH for not answering
your call on the later AO-7 pass; by that time, I was fighting QRN from
a series of noisy generators at the hamfest that were swamping my 2m
downlink receiver. Once again, thanks to the Superstition Amateur Radio
Club for inviting AMSAT to their hamfest. My next hamfest, including
on-air satellite demonstrations, will be at the Thunderbird Amateur Radio
Club's hamfest on Saturday, 7 January 2012, in Phoenix.
http://www.w7tbc.org/hamfest.html
Yesterday (Friday), I originally planned to make a day-trip to Flagstaff
in northern Arizona. Due to bad weather throughout much of Arizona in
the past day or two, I did not want to drive on the snowy and icy I-17
freeway up there. Rather than stay home or give up the scheduled day
off, I took a drive to southern Arizona and worked from a couple of
locations in southern Arizona near the I-19 freeway between Tucson and
the USA/Mexico border. Both locations were in grid DM41 in Santa Cruz
County AZ - an area I have visited many times in the past, but this was
the first time I've worked satellites from this Arizona county (the last
of the 15 Arizona counties I've worked from). I was able to work an
SO-50 pass followed by two AO-27 passes before driving back home in the
late afternoon.
The Friday QSOs have already been uploaded to the Logbook of the World
system. Today's QSOs from the hamfest should be uploaded this evening
or tomorrow morning, depending on the status of the LOTW web site. If
anyone would like to receive QSL cards for QSOs with WD9EWK at either
the hamfest and/or my Friday road trip only need to drop me an e-mail
with the QSO details. If you're in the log, I will be happy to send
you a card.
73!
Patrick WD9EWK/VA7EWK
http://www.wd9ewk.net/
------------------------------
Message: 4
Date: Sat, 03 Dec 2011 20:23:28 -0800
From: Clint Bradford <clintbradford@xxx.xxx>
To: AMSAT BB <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: ME
Message-ID: <BB713BF8-3386-4927-851D-04BD5B899C1C@xxx.xxx>
Content-Type: text/plain; CHARSET=US-ASCII
>> ... Rule #1 of email ...
No - the first "rule" of email is to respect the intent of the writer - and
not post publicly what was intended as a private communication.
Not sure of one's intent? ASK before posting elsewhere.
Anything less is quite disrespectful ... There is no "defense" for such an
act.
Clint Bradford
------------------------------
Message: 5
Date: Sat, 3 Dec 2011 21:48:35 -0700
From: "Patrick STODDARD (WD9EWK/VA7EWK)" <amsat-bb@xxxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: Fwd: VO-52 FM Operation
Message-ID:
<CAN6TEUcMs3OsTd8j3da27guYEh_pSBdkirFM9h5TpdR1T-vftA@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
> BTW, it's impossible to access VO-52 in FM with a 5 watt HT
> and arrow antennas because for a decent QSO on CW and SSB
> we need at least 50 watt and a 13 dBi 70 cm antenna.
???
I don't have a 70cm antenna with that much gain. I currently use
an Elk log periodic, started working SSB via satellite with an Arrow
Yagi in 2008, and - once - I even used a telescoping whip! My
transmit radio for the SSB birds is only at 5W (FT-817ND), and I
have worked VO-52 many times and have had many decent QSOs.
You do *NOT* need 50W into an antenna with that much gain as
a minimum for working VO-52, unless your feedline to the high-
gain antenna is very long and/or of very poor quality.
When VO-52 is very high in the sky, I can reduce my transmit power
from 5W to 500mW and keep a QSO going. I don't normally cut my
power back on AO-7 mode B or - when available - FO-29, since
those satellites' receivers do not appear to be as sensitive as the
receiver on VO-52.
Five watts (or less) with a directional antenna on all three of these
satellites in SSB has added almost 1100 QSOs to my satellite log,
about 10% of my almost 11000 satellite QSOs. And all of those
almost 1100 QSOs were made from portable stations working from
many different locations across the continental USA and three other
countries. This may not be a large percentage of QSOs, especially
when compared to the percentage of satellite QSOs I've made via
AO-51 before its recent demise that I recently wrote about, but I
enjoy working SSB via satellite as much as I do FM.
73!
Patrick WD9EWK/VA7EWK
http://www.wd9ewk.net/
------------------------------
Message: 6
Date: Sun, 04 Dec 2011 00:49:27 -0500
From: Roger <Rogerkola@xxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: Fw: Stop flaming please
Message-ID: <4EDB09E7.2010108@xxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
I don't think that it is appropriate language or a civil response. The
author should be moderated.
Roger
WA1KAT
On 12/3/2011 2:26 PM, andy thomas wrote:
> I don't think this is the spirit of informed and reasonable debate.
>
> 73 de andy g0sfj
>
> ----- Forwarded Message -----
> From: Kevin Deane<summit496@xxxx.xxx>
> To: andythomasmail@xxxxx.xx.xx
> Sent: Saturday, 3 December 2011, 19:15
> Subject: RE: [amsat-bb] Stop flaming please
>
>
> shut the fuck up dumbass, there will be nobody there on FM
>
>
> Kevin
> KF7MYK
>
>
>
> Date: Sat, 3 Dec 2011 16:35:10 +0000
> From: andythomasmail@xxxxx.xx.xx
> To: amsat-bb@xxxxx.xxx
> Subject: [amsat-bb] Stop flaming please
>
> I don't see why someone can't make a suggestion about a qrp experiment
without being flamed about being incompetent, inadequate, financially poor
or in some other way a lesser member of the -bb. You guys ought to learn a
little more tolerance.
>
> Fact #1 is, ao-51 is dead and we don't have anything else of that quality
for all of those operators who like doing field operations with an arrow.
SO-50 is at best unpredictable and AO27 is not always on, depends on its
ssp. Fact #2 is that anyone who is an alligator could have taken over vo-52
and didn't, thankfully. Fact #3 is that nobody would without seeking
permission.
>
> So please cut back from the snide clever-clever remarks about having too
small a piece of kit, hi. I don't feel bad about raising the idea.
>
> 73 de andy g0sfj
> _______________________________________________
------------------------------
Message: 7
Date: Sun, 04 Dec 2011 00:17:27 -0600
From: "Jim Shorney" <jshorney@xxxxxxxxx.xxx>
To: "AMSAT BB" <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: ME
Message-ID: <20111204061723.26471225167@xxxxxx.xxxxxxxxx.xxx>
Content-Type: text/plain; charset="iso-8859-1"
On Sat, 03 Dec 2011 20:23:28 -0800, Clint Bradford wrote:
>>> ... Rule #1 of email ...
>
>No - the first "rule" of email is to respect the intent of the writer - and
not post publicly what was intended as a private communication.
>
>Not sure of one's intent? ASK before posting elsewhere.
>
>Anything less is quite disrespectful ... There is no "defense" for such an
act.
With all due respect, Clint, you can't rely on everyone conforming to your
Rule
#1, as we have seen. Therefore, it is wiser to count on yourself to follow my
Rule #1. This I have learned from being 'online' for 20+ years.
IOW, CYA.
73
-Jim
NU0C
--
It's been said that if you give a million monkeys a typewriter each, one of
them will eventually type Shakespeare. Thanks to the Internet, we now know
this isn't true.
------------------------------
Message: 8
Date: Sat, 3 Dec 2011 22:20:32 -0800
From: "Art McBride" <kc6uqh@xxx.xxx>
To: "'Roger'" <Rogerkola@xxx.xxx>, <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: Fw: Stop flaming please
Message-ID: <DCD16D6E6D2246A6BAF0E98F407EB940@xxxxxx>
Content-Type: text/plain; charset="us-ascii"
In Part 97 of the FCC Rules (USA) states one of the purposes of the Amateur
Radio Service is to promote international goodwill. We as Amateur Radio
Operators should all be mindful of our relationship to Amateur Radio and
practice goodwill in all of our communications both internationally as well
as domestically.
A few apologies from the active participants would be appreciated and
provide for closure of this ugly thread.
Art,
KC6UQH
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of Roger
Sent: Saturday, December 03, 2011 9:49 PM
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: Fw: Stop flaming please
I don't think that it is appropriate language or a civil response. The
author should be moderated.
Roger
WA1KAT
On 12/3/2011 2:26 PM, andy thomas wrote:
> I don't think this is the spirit of informed and reasonable debate.
>
> 73 de andy g0sfj
>
> ----- Forwarded Message -----
> From: Kevin Deane<summit496@xxxx.xxx>
> To: andythomasmail@xxxxx.xx.xx
> Sent: Saturday, 3 December 2011, 19:15
> Subject: RE: [amsat-bb] Stop flaming please
>
>
> shut the fuck up dumbass, there will be nobody there on FM
>
>
> Kevin
> KF7MYK
>
>
>
> Date: Sat, 3 Dec 2011 16:35:10 +0000
> From: andythomasmail@xxxxx.xx.xx
> To: amsat-bb@xxxxx.xxx
> Subject: [amsat-bb] Stop flaming please
>
> I don't see why someone can't make a suggestion about a qrp experiment
without being flamed about being incompetent, inadequate, financially poor
or in some other way a lesser member of the -bb. You guys ought to learn a
little more tolerance.
>
> Fact #1 is, ao-51 is dead and we don't have anything else of that quality
for all of those operators who like doing field operations with an arrow.
SO-50 is at best unpredictable and AO27 is not always on, depends on its
ssp. Fact #2 is that anyone who is an alligator could have taken over vo-52
and didn't, thankfully. Fact #3 is that nobody would without seeking
permission.
>
> So please cut back from the snide clever-clever remarks about having too
small a piece of kit, hi. I don't feel bad about raising the idea.
>
> 73 de andy g0sfj
> _______________________________________________
_______________________________________________
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
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The message was checked by ESET NOD32 Antivirus.
http://www.eset.com
------------------------------
Message: 9
Date: Sat, 3 Dec 2011 22:52:58 -0800
From: "Greg D." <ko6th_greg@xxxxxxx.xxx>
To: <ka3hsw@xxx.xxx>, <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: AO-27 status
Message-ID: <BLU133-W14A931933D6646DCA5741FA9B40@xxx.xxx>
Content-Type: text/plain; charset="iso-8859-1"
Thanks for the update, George.
One note... The Epoch.txt file is named in all upper case on the website,
while the program expects it to have only an initial capital "E". Some
systems (e.g. Linux) are sensitive to this, and can't find the file.
A simple rename, and all is well.
Greg KO6TH
> From: ka3hsw@xxx.xxx
> To: amsat-bb@xxxxx.xxx
> Date: Sat, 3 Dec 2011 18:41:17 -0600
> Subject: [amsat-bb] AO-27 status
>
> Today I received the latest TOPR and EPOCH files for AO-27 from Mike Wyrick,
> NU3C, and have uploaded them to the AO-27 Satellite Scheduler website so
> that users of the Java scheduler program can update their files. Simply
> download them to the same folder that the Scheduler resides in. DO NOT use
> the "Update Data" option from within the program, as it will try to connect
> to the AO-27 website, which is still down. (They are working to get it back
> online.)
>
>
>
> George, KA3HSW
>
> http://sites.google.com/site/ao27satellitescheduler/
>
> _______________________________________________
> 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: Sun, 4 Dec 2011 01:12:48 -0600
From: "ka9qjg" <ka9qjg@xxxxxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: Stop flaming please
Message-ID: <04ca01ccb254$20d50490$627f0db0$@xxx>
Content-Type: text/plain; charset="US-ASCII"
What is UGLY Is that some keep reposting it .Some has never seen it .
Everyone will have a bad hair day and say or write something they wish they
could take back , I tell My Grandkids at last count 18 and 8 Great that
when they call their parents names They will be forgiven but Not forgotten
73 De Don KA9QJG
------------------------------
Message: 11
Date: Sun, 4 Dec 2011 08:29:13 +0000 (UTC)
From: Bob- W7LRD <w7lrd@xxxxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] just a few things
Message-ID:
<849481675.608304.1322987353278.JavaMail.root@xxxxxxx.xxxxxxxxxx.xx.xxxx.xxxxx
xx.xxx>
Content-Type: text/plain; charset=utf-8
Regarding the few posts in bad taste.? I'm an ex sailor I can handle it
however, this place is not at sea.?
With the?demise of AO-51 and the yearning for more birds.? Do we have a
place where we can actually see (pretty close) how much money is required
for what bird/launch?and even "ball park" time frame.? From the "outside"
looking in it appears we're simply shoot from the hip.? Nothing works better
than specific, concise and honest details be if from AMSAT-NA?or our DL
friends.? I recently gave a satellite talk and could not give definitive
anwers about even the future out a few years, other than my own hopes and
dreams. ?The university "beep" boxes we have assisted with are kinda fun,
why not hang on a small transponder from?? http://www.qsl.net/pe1rah/ . ?I'd
like to see a specific goal oriented conversation in this direction, that in
my opinion provides direction.? With very specific goals we will have
direction (money).? I know?we have "well connected" people in AMSAT" to the
space industry, the devil is in the details.? Now finally where can we find
the keps of some of the!
se odd ball birds like Phobos-Grunt.? That thing should be optically
visible at the gray line.
73 Bob
Washingto State AMSAT Coordinator
?
------------------------------
Message: 12
Date: Sun, 4 Dec 2011 09:39:12 +0000 (GMT)
From: andy thomas <andythomasmail@xxxxx.xx.xx>
To: amsat <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Apology
Message-ID:
<1322991552.12008.YahooMailNeo@xxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=iso-8859-1
My apologies for breaching any etiquette of this -bb. I have also sent?an
apology?to Gould as moderator. In my defence, I?was only showing the -bb an
example of the flaming I have received, and?I still think that this and
other emails I have received are unacceptable.
?
andy g0sfjamsat-
------------------------------
Message: 13
Date: Sun, 4 Dec 2011 09:42:16 +0000
From: Dominic Hawken <dominic@xxx.xx.xx>
To: i8cvs <domenico.i8cvs@xxx.xx>
Cc: Amsat - BBs <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: Remote polarity / preamp switching
Message-ID: <3BB5BB82-B42B-44FE-BE1C-C4D0983E6AB5@xxx.xx.xx>
Content-Type: text/plain; charset=us-ascii
On 4 Dec 2011, at 00:58, "i8cvs" <domenico.i8cvs@xxx.xx> wrote:
> ----- Original Message -----
> From: "Dominic Hawken" <dominic@xxx.xx.xx>
> To: <amsat-bb@xxxxx.xxx>
> Sent: Sunday, December 04, 2011 12:54 AM
> Subject: [amsat-bb] Remote polarity / preamp switching
>
> I currently have two runs of coax from the shack up to the roof, each
> connected to smallish dual band 2/70 yagis, horizontally polarised, on an
> az/el rotator. One's connected to the 70cm output of my FT847, and the other
> to the 2m output.
>> I'd like to upgrade to cross-polarised beams for 2 and 70 that I can
> switch between vertical, horizontal and circular polarisation, and also add
> masthead preamps powered through the coax. Some form of remote switching
> seems to be the way to go, but the few commercial switches I've found
> googling are really expensive (and I'd need two afaik).
>>
> I'm basically wanting to upgrade without having to run more coax or power
> cable up to the mast if possible - wondering of anyone has done something
> similar without breaking the bank.
>>
>> Thanks in advance tor any help,
>>
>> Dominic G6NQO.
>>
> Hi Dominic, G6NQO
>
> Your project is a difficult task on time and money.
>
> BTW in a separate email to you I have attached my articles
> "Switching Four Polarizations on a 70 cm crossed yagi"
> publisced into the AMSAT Journal March/April 2007 first
> part, and May/June 2007 the second part.
>
> 73" de
>
> i8CVS Domenico
Thank you Domenico - much appreciated.
Best,
Dominic G6NQO
------------------------------
Message: 14
Date: Sun, 04 Dec 2011 13:25:12 +0100
From: "Eric Knaps, ON4HF" <on4hf@xxxxxxx.xx>
Cc: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: Working SO-50
Message-ID: <4EDB66A8.1040803@xxxxxxx.xx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Hello Ib,
I agree with you.
This is what I have in my Doppler.sqf file for SatPC32:
SO-50,436790,145850,FM,FM,NOR,0,0
SO-50,436795,145850,FM,FM,NOR,0,0
and in my SubTone.sqf:
SO-50,67.0,$3F,1
SO-50,74.4,$3E,3
This is for the Yaesu FT-847.
73,
Eric.
Amateur Radio Station ON4HF
Eric Knaps
Satellite manager UBA
http://www.on4hf.be
Op 3/12/2011 21:45, Ib Christoffersen schreef:
> Working SO-50.
>
> I think it is time to look at how one can operate over SO-50 and the
> problems that can be encountered.
>
> First the normal and nominal data:
>
> Uplink is at 145.850 MHz. Downlink at 436.795 MHz.
>
> If it is not ON - use 74.4 Hz CTCSS tone to activate the transmitter for 10
> seconds to have it on for nominally 10 minutes - when on use 67 Hz CTCSS
> tone during your transmission.
>
> That was the intended normal operation.
>
> Now to the deviations from the normal scheme.
>
> The downlink frequency sometimes jump approximately 5 kHz. Therefore I have
> two different frequencies pairs to be used in SATPC32:
>
> SO-50,436788.50,145849,FM,FM,NOR,0,0
> SO-50,436795,145850,FM,FM,NOR,0,0
>
> If you do not use Full Doppler Tracking it is not much of an issue. Just
> tune for best downlink.
>
> Talking about SATPC32 here are the entries for the CTCSS tone:
>
> SO-50,67.0,$3F,1
> SO-50,74.4,$3E,3
>
> The first data is for the ICOM IC-910 radio. If you use another radio please
> look at the information in SATPC32.
>
> Next problem is the change of polarity of the downlink signal during a pass.
> The polarity changes during the pass. At least I have to switch polarity a
> few times from RHCP to LHCP to optimize the downlink signal. That has been
> confirmed by others. How it works using linearly polarized antennas I do not
> know - but I think there will be some fading.
>
> And if that is not enough - at least here over Europe - we have to put up
> with QRM on the uplink from a lot of different sources like repeaters and
> people using our frequencies as cheap phone connections.
> The result of the QRM is that it sometimes is difficult to turn SO-50 on.
> Also the QRM may turn the transmitter off.
>
> And since the inclination is not sun synchronous we have to live with a
> steady change of pass times over the year.
>
> Some may think I am not a fan of SO-50. That is not the case. It is a very
> good satellite we got for free and it works very well.
> Already more people are using it over Europe after AO-51 is not with us any
> more. That just took a couple of days.
>
> 73 OZ1MY/Ib
>
>
>
> _______________________________________________
> 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!
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>
------------------------------
Message: 15
Date: Sun, 4 Dec 2011 13:22:49 +0000 (GMT)
From: "Trevor ." <m5aka@xxxxx.xx.xx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Articles on Getting Started on SSB Sats
Message-ID:
<1323004969.15907.YahooMailClassic@xxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=iso-8859-1
The AMSAT new starters page at
http://www.amsat.org/amsat-new/information/faqs/
is a valuable resource but it seems to be all about FM sats, there's little
showing newcomers how to use the Linear Transponder SSB/CW sats.
Why is this, well clearly because no-one, myself included, can be bothered
to write something that can be made available on the AMSAT site.
There is of course some infromation scattered around the web that show what
can be done with simple equipment on the Linear Transponder satellites such
as:
AO7 from Indoors on 2Watts and Arrow antenna.?
http://observations.biz/Observations_from_Norway/Observations_04_01_2009.htm
The LA2QAA portable AO-7 Station
http://observations.biz/Observations_from_Norway/observations_14_06_2008.htm
POWER. How much is enough?
http://www.observations.biz/Observations_from_Norway/howmuchpowerisenough.htm
73 Trevor M5AKA
------------------------------
Message: 16
Date: Sun, 4 Dec 2011 13:36:52 +0000
From: Gordon JC Pearce <gordonjcp@xxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: Fwd: VO-52 FM Operation
Message-ID: <20111204133652.7687f3df.gordonjcp@xxxx.xxx>
Content-Type: text/plain; charset=US-ASCII
On Sat, 3 Dec 2011 18:29:34 +0100
"i8cvs" <domenico.i8cvs@xxx.xx> wrote:
> Hi, WA4HFN
>
> Well sayd.............I agree with you !
>
> CW and SSB is just what we have to do on VO-52
>
> BTW, it's impossible to access VO-52 in FM with a 5 watt HT
> and arrow antennas because for a decent QSO on CW and SSB
> we need at least 50 watt and a 13 dBi 70 cm antenna.
So, VO-52 is either broken or pointless?
Why would you want to lug around so much equipment to work a satellite? Not
to mention the difficulty in aiming such a sharp aerial at it - you'd need a
computer-controlled rotator. And if you're going to have to sit in front of
a computer to make a QSO you may as well use Skype.
--
Gordon JC Pearce MM0YEQ <gordonjcp@xxxx.xxx>
------------------------------
_______________________________________________
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 657
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