A few tweaks to the UZ7HO packet config – more copy from the ISS

I mentioned yesterday that I only seemed to be copying a few frames from each ISS pass. Those seemed to be when the satellite was closest. Which is fair enough of course.

This morning, I spent a few moments reading the UZ7HO manual (which is very good!). You might argue that I should have done that a week ago. But I'm really not that sort of person, I'm afraid.

It transpired that my audio levels into the program weren't as high as they should have been. I cranked these up almost as far as they would go and left the program monitoring the next ISS pass.

Definitely an improvement! Many more frames copied - great, including some more distant stations such as HG8PL. Rather than copying frames over a short period of time, it was usable over several minutes.

The default setting for the UZ7HO software seemed to be a monochrome waterfall display. I changed it into colour and then followed the manual's advice to make it a green colour, with red when packet signals are received.

So, a few more frames digi-ed via the ISS today, and messages swapped between Pete, 2E0SQL and myself, over a ground path of around 12 miles, via a spacecraft travelling above us at 17,500MPH.

Tim Kirby, G4VXE, is a regular contributor to AmateurRadio.com and writes from Oxfordshire, England. Contact him at [email protected].

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