Thanks for the info. I actually own a Kenwood TH-D7. Is that what you're referring to? I was under the impression that the TNC on the TH-D7 is permanently crippled and I couldn't use it to effectively communicate in both directions to a pacsat.
Its all in the Details.....
The TH-D7 TNC works perfectly well... For what it was designed to do... That is APRS, or other UI packets. The only thing it has problems with is CONNECTED mode, handing lots of data, at high throughput, in KISS mode at 9600 baud. IE, using it for classical PACSAT mode.
But on the other hand, you can use it to digipeat through the PACSAT all the time with no problems whatsoever. This is APRS mode, single packet at a time, digipeat using UI packets at 9600 baud. Which, by the way, are more efficient in the task you are proposing anyway...
Good luck. Bob, WB4APR
-andrew
On Fri, Jul 25, 2008 at 5:55 PM, Robert Bruninga bruninga@usna.edu wrote:
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
be there to correct for doppler, etc.
-andrew
On Fri, Jul 25, 2008 at 12:55 PM, i8cvs
domenico.i8cvs@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@gmail.com To: "Andrew Glasbrenner" glasbrenner@mindspring.com;
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@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
>> > 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.
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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!" _______________________________________________ Sent via AMSAT-BB@amsat.org. Opinions expressed are
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