[amsat-bb] Re: VHF UHF Rig

25 Jul 2008

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Is there a radio that is small and lightweight 
that I could interface to a computer easily to 
receive and transmit packets to AO-51?  
I want to use the radio (and the AO-51 pacsat) 
as the primary means to communicate with an 
ocean-deployed robot.
Use any of the APRS radios (D7, D70, D710).  They all have 9600
baud TNC's built in... Operate in UI digipeat mode assuming your
command/telemetry is sparse and infrequent and not high volume..
Bob, WB4APR
Obviously my hand would not
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be there to correct for doppler, etc.
-andrew
On Fri, Jul 25, 2008 at 12:55 PM, i8cvs
domenico.i8cvs@tin.it wrote:
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Hi All,
My Kenwood TS-790E has absolutely no "birdies" in 2 m ,70
cm and 23 cm
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and this is why I like it very much.
Tanks very much the OM that sold it to me as used to buy a
new TS-2000X
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and his "birdies" !
73" de
i8CVS Domenico
----- Original Message -----
From: "John Price" n4qwf1@gmail.com
To: "Andrew Glasbrenner" glasbrenner@mindspring.com;
amsat-bb@amsat.org
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Sent: Friday, July 25, 2008 4:54 PM
Subject: [amsat-bb] Re: VHF UHF Rig
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My 847 has a number of birdies in the satellite band. I use
a magic
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notch to silence them. It is
not the perfect solution but it works.
73's << John
On Fri, Jul 25, 2008 at 10:32 AM, Andrew Glasbrenner
glasbrenner@mindspring.com wrote:
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The TS2000 generates an internal signal (a "birdie") on
the downlink of
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SO-50 and AO-27. This signal overwhelms the satellite
signal in most
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cases,
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making it difficult if no impossible to use on those two
very popular
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satellites.
73, Drew KO4MA
----- Original Message -----
From: "Terry Dillard" tdillard@gmail.com
To: AMSAT-BB@amsat.org
Sent: Friday, July 25, 2008 9:55 AM
Subject: [amsat-bb] Re: VHF UHF Rig
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Pardon my ignorance, but what the heck is a "birdy
problem"?
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--
Terry Dillard, KI4YZI
www.ki4yzi.com
"Veritas Vos Liberabit"
On 7/24/08, Sebastian w4as@bellsouth.net wrote:
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Oh boy, and here I just bought a used dual band mobile
on the cheap
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(no transmit) to take care of the birdy problem.
Do you have any idea why the birdy would show up on a
different
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radio?  Could it be a matter of a lack of shielding?
It just doesn't
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make any sense to me why a different rig would get
that interference
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on receive, and even when using a different antenna.
Others have suggested using a preamp on 440, and
turning off the
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2000's internal preamp and lowering the rf gain,
therefore using the
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preamp to get rid of most of the birdy.
But I guess I'll find out for sure when my other rig
gets here.
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73 de W4AS
Sebastian
On Jul 24, 2008, at 7:00 PM, Bruce Robertson wrote:
> On Wed, Jul 23, 2008 at 11:31 PM, Mike Miller
mmiller@nctc.com
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> wrote:
>> Thinking about selling 847.....Which rig is best for
>> satellite..work.?
>>
>> ICOM 910 H
>> Kenwood 2000
>>
>> opinions ....your 2 cents
>
> I own a TS-2000. The birdie problem on SO-50 and
AO-27 is quite
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real,
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> and there is no fix I know of. I find that the
birdie is so bad that
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> even if I use a different receiver on UHF, I pick up
the birdie on
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it
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> as well! So it is a worse radio regarding satellite
work than the
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ICOM
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> if you care to work these birds.  However, if you
consider the fact
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> that a fine HF radio is thrown in at no extra cost,
that there is
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> continuously adjustable filtering also at no cost,
you might prefer
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> that trade-off. I'm reasonably pleased with mine.
>
> However, if money were no issue, I would get the
ICOM for satellite
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> work and a different HF radio with even better
characteristics.
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>
> HTH,
>
> 73, Bruce
> VE9QRP

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--
N4QWF Amateur Radio Operator
AO-7,AO-27,SO-50,AO-51,VO-52,ISS
Internet N4QWF@AMSAT.ORG
Echolink nodes #110903 -L #388463
Formerly KC4AHW VK3FEZ
Amsat Member #27845
DXCC #33,478
VUCC SAT #135
WAS SAT #296
51 on AO-51 #13
LON -79.256 LAT 37.459 Grid FM07il
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From the Foothills of the Blueridge
*Life should not be a journey to the grave with the
intention of
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arriving safely in a pretty and well preserved body, but
rather to
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skid in broadside, thoroughly used up, totally worn out,
and loudly
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proclaiming - "WOW, What a ride!"
_______________________________________________
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[amsat-bb] Re: VHF UHF Rig

Robert Bruninga