brainwagon "There is much pleasure in useless knowledge." — Bertrand Russell

20Jan/101

K6HX QRSS Grabber

For fun, I've got my new RFSPACE SDR-IQ running on my laptop using Spectrum Lab and monitoring the 30m QRSS beacon subband. I enabled its HTTP server, and now have set up a little cronscript to copy its display to my webserver once a minute. You can see an example display below (showing KC7VHS, AA5CK and WA5DJJ) or you can click on the link below, and get the live version on QRSS.info

_spectrum

K6HX QRSS Grabber.

I'm not sure why the frequency display on the right is wrong. Anybody have any ideas? I probably have missed something in the configuration of Spectrum Lab, but it's rather like operating the Space Shuttle...

17Jan/100

A Self Contained QRSS beacon…

Paul, M1CNK, has a very nice webpage that details his QRSS beacon, constructed as several different kits assembled as modules. Very cool.

qrssbeacon (wiltonpaul).

15Feb/090

Testing New S/MT Hellschrieber Beacon ID…

I am currently running my 2w beacon with the following sequential multi-tone Hellschrieber ID on 30m:

smt

As Colin, G6AVK pointed out, this is likely to be a lot less effective than my previous MV identifier, but if it does work, people might have a better chance of knowing who the beacon actually is. I'll let it run for a while and see how it does. Propagation is falling off a bit for me now, but might get better later.

15Feb/090

11 Hours of 30m Beacon Band…

Well, last night, I tweaked my recording program to produce recordings in 15 minute chunks and started it running. This morning, I had a bunch of recordings, a short run of which produced the following spectrograms (never tried this WordPress functionality before hope it works out!):

Addedum: Sigh. WordPress insisted on converting my nifty names (which told you what time they are recording) to shorter things, which didn't preserve their relative ordering. Grump. Oh well. I think I got them sorted. By hand. How tedious.

Addendum2: Here's W8LIW's beacon, booming in quite strong.

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1Feb/090

AA5CK via QRSS

Yesterday, I recorded a couple of hours of signals off of 30m, and ran them through my homegrown spectrogram code for fun. I found the following FSK CW signal (click on it to get it larger):

aa5ck

(The blank regions are the two minute intervals where I am sending a WSPR beacon message.)

With a bit of work, I identified the call, and exchanged email with Ted, AA5CK, who verified that it was his signal. He was operating from grid EM05eh with a power of 50mw into a vertical antenna. From my QTH in CM87ux, that works out to about 1250 miles. Very nice!

6Jan/090

MEPT beacon visible in Ohio

W8LIW's grabber on 30m is currently showing my "MV" beacon transmissions as well as the DFCW of VE1VDM (I presume) and the flying W of W1BW, as well as the faint sawtooth of WB3ANQ. I can't spot myself on W1BW's grabber at the moment: my ability to get into Concord, MA seems limited over the last few weeks.

W8LIW 30m Grabber 1/06/2008