I use an HT with a J-Pole, UISS, and Soundmodem (http://uz7.ho.ua/packetradio.htm) and decode tons of packets every pass.

I really like Soundmodem because you can *see* the levels. The key for me was to get the levels set correctly. Once I did that, it was easy. Until I got that right, I was getting nothing. Make sure you set the color option in Soundmodem, it makes it even easier to get your levels set correctly.

-David, N9KT

On Tue, Sep 19, 2023 at 5:02 PM Derrick Lau via AMSAT-BB <amsat-bb@amsat.org> wrote:

Good evening all:

 

I am trying to listen to packets transmitted from the ISS on 145.825 MHz using both a horizontally and vertically polarized 1m dipole.  I use RTL-SDR blog USB SDR device plugged into my Windows 10 laptop running SDR#, AGW Packet Engine, and UISS.  I configured my SDR# to use WFM, no shift, filter Hamm-Poisson, bandwidth 600 kHz, order 500, no squelch.  I had the output of SDR# sent to my speaker port, which I plugged into the microphone in port of my USB soundcard that AGW Packet Engine was attached to.  I also had QTMM packet reader listening to that soundcard too.  I did not see any packets come through, which makes no sense as receiving data packets when the ISS passes overhead should be easy, right?

 

Would you have any idea offhand as to what I did wrong please?

 

Thanks,

Derrick

VA3LGT

 


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