[amsat-bb] Re: VHF UHF Rig

[Andrew Harris]

Hi everyone,

   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 need one that I would not have to tinker with by hand; I
want to use the radio (and the AO-51 pacsat) as the primary means to
communicate with an ocean-deployed robot.  Obviously my hand would not
be there to correct for doppler, etc.

-andrew

On Fri, Jul 25, 2008 at 12:55 PM, i8cvs <domenico.i8cvs at tin.it> wrote:
> Hi All,
>
> My Kenwood TS-790E has absolutely no "birdies" in 2 m ,70 cm and 23 cm
> 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
> and his "birdies" !
>
> 73" de
>
> i8CVS Domenico
>
> ----- Original Message -----
> From: "John Price" <n4qwf1 at gmail.com>
> To: "Andrew Glasbrenner" <glasbrenner at mindspring.com>; <amsat-bb at amsat.org>
> Sent: Friday, July 25, 2008 4:54 PM
> Subject: [amsat-bb] Re: VHF UHF Rig
>
>
>> My 847 has a number of birdies in the satellite band. I use a magic
>> 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 at mindspring.com> wrote:
>> > The TS2000 generates an internal signal (a "birdie") on the downlink of
>> > SO-50 and AO-27. This signal overwhelms the satellite signal in most
> cases,
>> > making it difficult if no impossible to use on those two very popular
>> > satellites.
>> >
>> > 73, Drew KO4MA
>> >
>> > ----- Original Message -----
>> > From: "Terry Dillard" <tdillard at gmail.com>
>> > To: <AMSAT-BB at amsat.org>
>> > Sent: Friday, July 25, 2008 9:55 AM
>> > Subject: [amsat-bb] Re: VHF UHF Rig
>> >
>> >
>> >> Pardon my ignorance, but what the heck is a "birdy problem"?
>> >>
>> >> --
>> >> Terry Dillard, KI4YZI
>> >> www.ki4yzi.com
>> >> "Veritas Vos Liberabit"
>> >>
>> >>
>> >> On 7/24/08, Sebastian <w4as at bellsouth.net> wrote:
>> >>>
>> >>> Oh boy, and here I just bought a used dual band mobile on the cheap
>> >>> (no transmit) to take care of the birdy problem.
>> >>>
>> >>> Do you have any idea why the birdy would show up on a different
>> >>> radio?  Could it be a matter of a lack of shielding?  It just doesn't
>> >>> make any sense to me why a different rig would get that interference
>> >>> on receive, and even when using a different antenna.
>> >>>
>> >>> Others have suggested using a preamp on 440, and turning off the
>> >>> 2000's internal preamp and lowering the rf gain, therefore using the
>> >>> preamp to get rid of most of the birdy.
>> >>>
>> >>> But I guess I'll find out for sure when my other rig gets here.
>> >>>
>> >>> 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 at nctc.com>
>> >>> > 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
> real,
>> >>> > and there is no fix I know of. I find that the birdie is so bad that
>> >>> > even if I use a different receiver on UHF, I pick up the birdie on
> it
>> >>> > as well! So it is a worse radio regarding satellite work than the
> ICOM
>> >>> > if you care to work these birds.  However, if you consider the fact
>> >>> > that a fine HF radio is thrown in at no extra cost, that there is
>> >>> > continuously adjustable filtering also at no cost, you might prefer
>> >>> > that trade-off. I'm reasonably pleased with mine.
>> >>> >
>> >>> > However, if money were no issue, I would get the ICOM for satellite
>> >>> > work and a different HF radio with even better characteristics.
>> >>> >
>> >>> > HTH,
>> >>> >
>> >>> > 73, Bruce
>> >>> > VE9QRP
>> >>>
>> >> _______________________________________________
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> author.
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>> > _______________________________________________
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>>
>>
>>
>> --
>> N4QWF Amateur Radio Operator
>> AO-7,AO-27,SO-50,AO-51,VO-52,ISS
>> Internet N4QWF at 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
>> >From the Foothills of the Blueridge
>>
>> *Life should not be a journey to the grave with the intention of
>> arriving safely in a pretty and well preserved body, but rather to
>> skid in broadside, thoroughly used up, totally worn out, and loudly
>> proclaiming - "WOW, What a ride!"
>> _______________________________________________
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>
>
> _______________________________________________
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