[amsat-bb] unable to dig over ISS

[D. Craig Fox]

Thank you Scott and everyone else for offering suggestions. I always used ARISS but also tried RS0ISS as it used to work as well.  None of the obvious stuff has helped.

73,
Craig
N6RSX 

-----Original Message-----
From: AMSAT-BB <amsat-bb-bounces at amsat.org> On Behalf Of Scott via AMSAT-BB
Sent: Tuesday, May 19, 2020 2:08 PM
Cc: amsat-bb at amsat.org
Subject: Re: [amsat-bb] unable to dig over ISS

To "CQ" via "ARISS" continues to work very well for the ISS digipeater.

73!

-Scott,  K4KDR

===================

On Tue, May 19, 2020 at 2:05 PM D. Craig Fox via AMSAT-BB < amsat-bb at amsat.org> wrote:

> Thanks Bob. Not sure but I seem to recall that sound modem has a tone 
> calibration function which may allow me to do as you suggest.  I have 
> regularly tried RS0ISS. Both ARISS and RS0ISS used to work fine for me.
>
> Craig
> N6RSX
>
> -----Original Message-----
> From: Robert Bruninga <bruninga at usna.edu>
> Sent: Tuesday, May 19, 2020 10:55 AM
> To: D. Craig Fox <DCFox at rwglaw.com>
> Cc: amsat-bb at amsat.org
> Subject: RE: [amsat-bb] unable to dig over ISS
>
> A series capacitor (experimental value until you hear the change in 
> pitch on another radio) will boost the high tone.  A parallel cap to 
> ground (experimental value) can reduce the high tone...
>
> ARISS reports that the ericcson radio on ISS is quite deaf and so 
> needs to hear some power.  Also, they are not sure if the ARISS alias 
> works.  Try RS0ISS.
>
> Bob
> bob
>
> -----Original Message-----
> From: D. Craig Fox <DCFox at rwglaw.com>
> Sent: Tuesday, May 19, 2020 1:20 PM
> To: 'Robert Bruninga' <bruninga at usna.edu>
> Cc: amsat-bb at amsat.org
> Subject: RE: [amsat-bb] unable to dig over ISS
>
> Thanks Bob! Maybe that is the issue. Now I just need to figure out how 
> to analyze the tones being generated by my Signalink.
>
> Thank you and 73
>
> Craig
> N6RSX
>
> -----Original Message-----
> From: Robert Bruninga <bruninga at usna.edu>
> Sent: Tuesday, May 19, 2020 7:47 AM
> To: D. Craig Fox <DCFox at rwglaw.com>; amsat bb <amsat-bb at amsat.org>
> Subject: RE: [amsat-bb] unable to dig over ISS
>
> If the ISS radio is the Kenwood D700, it is quite sensitive to  
> unbalanced tones.  So your base station might work well with a local 
> digi, but if the low tone is higher than the high tone by just a bit 
> (or other way around), it will not be decoded by the D700.  This is 
> because the kenwood is optimized for flat tones (at the discriminator) 
> not pre-emphasized as most people do when they hook up an external TNC to the mic circuits.
>
> (I may have the tones reversed).  One of them can be higher than the 
> other a bit and work fine.  The other way around it simply will not work.
> Bob
>
> -----Original Message-----
> From: AMSAT-BB <amsat-bb-bounces at amsat.org> On Behalf Of D. Craig Fox 
> via AMSAT-BB
> Sent: Monday, May 18, 2020 6:18 PM
> To: 'k6vug at sbcglobal.net' <k6vug at sbcglobal.net>; amsat-bb at amsat.org
> Subject: Re: [amsat-bb] unable to dig over ISS
>
> Thanks Umesh. Well I would agree except that several nights ago I 
> pulled out the D7 HT and elk, and digipeated numerous times on a nigh pass.
> Immediately went to the base station and tried but no dice. Plus, on 
> every pass Ive tried on my base station, I see the stations I decoded 
> show up on the ISS spotter. So it remains as issue at my end.
>
> Thank you
>
> Craig
> N6RSX
>
> From: k6vug at sbcglobal.net <k6vug at sbcglobal.net>
> Sent: Monday, May 18, 2020 2:22 PM
> To: amsat-bb at amsat.org; D. Craig Fox <DCFox at rwglaw.com>
> Subject: Re: [amsat-bb] unable to dig over ISS
>
> Looking at when the problem started, I'm assuming the problem is 
> related to ISS turning off their packet systems regularly.
>
> Long ago I was able to operate ISS packet throughout the pass, even 
> drop messages into their their BBS, etc., but for a considerable time 
> now I have pretty much given up working with ISS packet.
>
> All other factors considered, the fact that your system gets ACK-ed on
> 144.390 is proof positive.  It has always been a guarantee to be able 
> to work ISS packet.
>
> 73!
> Umesh,k6vug
>
>
>
>
>
> On Monday, May 18, 2020, 11:40:40 AM PDT, D. Craig Fox via AMSAT-BB < 
> amsat-bb at amsat.org<mailto:amsat-bb at amsat.org>> wrote:
>
>
> Posting this as a last resort as I ordinarily enjoy doing my own 
> troubleshooting, but this one has me perplexed. For normal sat ops I 
> am running a TS2Kx, 5 el 2m and 11 el 70 cm Directive Systems yagis on a G5400.
> Doppler and rotor all run by SatPc32.  Up to about a year ago I ran 
> AGWPE and UISS and a USB Signalink (through ACC 2) to dig over ISS. 
> Never had a problem, except the occasional decode problem fixed by 
> UX7HO Soundmodem. I finally removed AGWPE and began using Sound Modem with UISS.
> However, since then I have been unable to dig over ISS.  I decode just 
> fine.
> My transmissions sound like normal packet transmissions, listening on 
> a second receiver. I have used all of the online recommended settings 
> for both Sound Modem and UISS. I have played with the audio levels. I 
> substituted Signalinks in case that was the issue. Also, I have no 
> problem sending APRS over 144.39 using different "wide" settings and 
> getting an acknowledgement back. My "neighbor" Christy KB6LTY has 
> provided mu ch assistance, but still no joy.  I am missing something. 
> So I'm hoping someone has had a similar issue with a similar set up 
> and can maybe send me screen shots of their settings that work, especially in Sound Modem.
> Or, any other suggestions would be greatly appreciated.
>
> Thank you in advance
>
> Craig
> N6RSX
>
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