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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@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@gmail.com>
> To: <AMSAT-BB@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@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@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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-- 
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
>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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