[amsat-bb] ISS APRS Signal Quality?

Wed Feb 13 16:11:55 UTC 2019

Thank you Dave for the update and clarity!

Brian, KF6FES

> On Feb 13, 2019, at 7:20 AM, Dave Taylor <w8aas at verizon.net> wrote:
> 
> APRS is now using a new packet module that is identical in construction to the failed one.  The new packet module was just launched to space a few months ago as a backup and just put into operation.  We are using the same radio and antenna as before, so any differences people are seeing should be due to the TNC in the packet module.
> 
> SSTV was sent using a different radio and antenna, from the other end of ISS.  The initial problem with it was completely unrelated to APRS.
> 
> Dave, W8AAS
> 
>> On Feb 13, 2019, at 7:14 AM, kb2mjeff at att.net wrote:
>> 
>> I'm also having trouble working the ISS packet station, since it's been
>> turned back on. I'm kinda seeing that I can get in better when the ISS is at
>> a certain angle from me. I'm almost sure of this but have been busy
>> elsewhere, so I'm not around for all the passes to be certain. Maybe they'll
>> go back to the good antenna location, if they can... 
>> 
>> 73 Jeff kb2m
>> 
>> -----Original Message-----
>> From: AMSAT-BB <amsat-bb-bounces at amsat.org> On Behalf Of Brian Clark
>> Sent: Tuesday, February 12, 2019 10:54 PM
>> To: Fernando Ramirez <framirezferrer at gmail.com>
>> Cc: AMSAT -BB <amsat-bb at amsat.org>
>> Subject: Re: [amsat-bb] ISS APRS Signal Quality?
>> 
>> It appears that after the system came back after being down for over a
>> month, that something changed.  I have been able to hit it with a Kenwood
>> TH-D72, but it was not easy.  The receive is a bit deaf, and the transmit is
>> very weak.  I tried last evening, but was unsuccessful.
>> 
>> I am wondering if some new antenna systems are being tested.  It was a
>> similar situation with the SSTV event over the weekend, then it came back
>> full strength.  I am certain that after the testing is complete (if that is
>> what is going on) things will be strong and great again.  The A.R.I.S.S.
>> Team is very good and is always working hard with the ISS crew members to
>> keep the systems in tip top shape.
>> 
>> 73's de KF6FES
>> 
>> Brian,
>> 
>> 
>> On Tue, Feb 12, 2019, 6:46 PM Fernando Ramirez <framirezferrer at gmail.com
>> wrote:
>> 
>>> I have tried two different radios, an Icom IC-2820h and a Kenwood TM-V71A.
>>> No luck with the Icom at full power on a high elevation pass. Better 
>>> luck with the Kenwood but only on higher passes and transmitting with 50w.
>>> 
>>> Other operators have been able to get their packets digipeated with 
>>> Kenwood APRS-Ready HTs, so it's kind of puzzling.
>>> 
>>> I'm using a Mobilinkd TNC3. I have no problem hitting distant 
>>> terrestrial digipeaters with both setups.
>>> 
>>> 73
>>> Fernando, NP4JV
>>> 
>>>> On Tue, Feb 12, 2019, 7:37 PM <walterh at k5wh.net> wrote:
>>>> 
>>>> I definitely have to agree with you.
>>>> 
>>>> The signal does seem to be less than half of what it used to be, and 
>>>> I
>>> have
>>>> yet to hit it myself. When it used to be so easy.
>>>> 
>>>> Not sure what has changed, but it's certainly not the same as it was
>>> before
>>>> the shut down several weeks ago.
>>>> 
>>>> Walter/K5WH
>>>> 
>>>> -----Original Message-----
>>>> From: AMSAT-BB <amsat-bb-bounces at amsat.org> On Behalf Of Frank
>>> Karnauskas
>>>> Sent: Tuesday, February 12, 2019 5:19 PM
>>>> To: amsat-bb at amsat.org
>>>> Subject: [amsat-bb] ISS APRS Signal Quality?
>>>> 
>>>> Is it me or does the APRS signal not sound as strong as it was 
>>>> before and is it not hearing quite as well?
>>>> 
>>>> I am having a heck of a time pinging the digipeater and the signal 
>>>> seems
>>> to
>>>> be down a bit.
>>>> 
>>>> Could entirely be something on my end, but I would appreciate others'
>>>> opinion.
>>>> 
>>>> 73,
>>>> Frank
>>>> 
>>>> FRANK W. KARNAUSKAS, N1UW
>>>> N1UW at GOKARNS.com
>>>> 
>>>> 
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> _______________________________________________
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