[amsat-bb] Re: VHF UHF Rig
n4qwf1 at gmail.com
Fri Jul 25 07:54:23 PDT 2008
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
> 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
>> "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
>>> 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
>> Sent via AMSAT-BB at 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
> Sent via AMSAT-BB at 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
N4QWF Amateur Radio Operator
Internet N4QWF at AMSAT.ORG
Echolink nodes #110903 -L #388463
Formerly KC4AHW VK3FEZ
Amsat Member #27845
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!"
More information about the AMSAT-BB