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
Sent via AMSAT-BB@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