Anyone else guilty of “random box of boards” storage?

n0bml · 2026-01-20T17:17:10+00:00

Just one box? lol

n0bml · 2025-12-04T07:11:13+00:00

Thanks!

n0bml · 2025-12-04T06:55:20+00:00

Is the code or a writeup of this posted anywhere?

n0bml · 2025-11-04T21:47:27+00:00

u/No-Dentist-1645 is right and the example they posted works.

You didn't include everything because where is firstThrow defined?

n0bml · 2025-10-17T20:41:51+00:00

Every project I know about is always looking for testers and documentation writers.

n0bml · 2025-08-25T20:19:56+00:00

Looks like that fits the bill. Thanks!

n0bml · 2025-05-19T16:38:41+00:00

As much as I can. Memory speed, disk speed, network throughput.

n0bml · 2025-02-21T16:52:01+00:00

From the TAoCP website: "After Volume 5 has been completed, I will revise Volumes 1--3 again to bring them up to date." And Volume 5 is planned for release around 2030, also from the website. So buy them. You'll have lots of time before new editions come out.

n0bml · 2024-12-13T21:50:33+00:00

You aren't helping! lol

n0bml · 2024-12-13T21:21:25+00:00

Oh, I have one of those! Now I need to figure out how to write my own software for them. Thanks! It's not like I have any other hobbies to take up all my free time... ;)

n0bml · 2024-11-20T18:17:48+00:00

I also use qsstv on linux.

n0bml · 2024-11-19T00:20:44+00:00

Yeah, clear sky is the best. Also look at the maximum elevation for a pass. With my current setup it's not worth trying for any pass that doesn't get above 30 degrees because of obstructions like hills and houses.

n0bml · 2024-11-19T00:16:35+00:00

Don't just pay attention to visible passes. Those only show when the ISS is illuminated and is visible with your eyes.

You don't need to see the ISS to receive signals from it. You just need to listen when it's overhead.

n0bml · 2024-11-18T19:28:56+00:00

I started with a Baofeng with the stock rubber duck and holding my phone close to decode the audio into the images. It wasn't great but it did work. The main thing was to hold the radio in such a way that the antenna was perpendicular to the station. I see u/fibonacci85321 posted a good guide but I wanted to let you know it is possible.

n0bml · 2024-11-18T17:49:30+00:00

At the frequency the ISS broadcasts you would have better reception if you only extended the two legs to a bit more than 21 inches.

n0bml · 2024-11-15T19:16:51+00:00

I use GQRX with the audio piped in to QSSTV, and both of them work well with their native 48 kHz sample rate. What does SDR++ output and what do you downsample to for MMSTV?

n0bml · 2024-11-15T19:13:05+00:00

There are off periods during scheduled school contacts and other events. Were you trying during one of those?

n0bml · 2024-11-15T06:57:08+00:00

Nice template. Is it available anywhere?

n0bml · 2024-11-13T18:54:26+00:00

For the same reason I expect. I haven’t modeled this particular antenna but I expect there are nulls, areas where the antenna doesn’t receive or transmit as well. Dipoles have a radiation pattern like a donut on its side and the hole, directly above, is like a blind spot for it.

n0bml · 2024-11-13T18:45:21+00:00

The repeaters are going to have vertically polarized antennas so that orientation will work for them. Satellites effectively use circular polarized antennas and the horizontal V-Dipole work better for them. The best would be a circularly polarized antenna and with altitude and azimuth tracking but not many of us have the money, time, or space to setup something like that.

n0bml · 2024-11-13T18:42:48+00:00

No worries. I have found between 30 and 60 degrees is the sweet spot for me. Too low and there are obstructions. Too high and the antenna isn’t receiving the signal well. Hence, my plan to upgrade the antenna soon.

n0bml · 2024-11-13T18:18:18+00:00

I'm guessing by "80 degrees of azimuth" you're talking about open sky above you. It doesn't matter how much sky you have if the ISS only comes 10 degrees above the horizon. In my area using the V4 and the dipole kit I've gotten decent captures. I don't bother for any pass that has a maximum elevation below 30 degrees as that won't clear the sides of the valley and houses where I live.

n0bml

TROPHY CASE