brainwagon

I’ve been interested in low power beacon transmitters for a long time.  If you’ve followed my blog, you’ve probably read about my experiments with WSPR and QRSS operation.  Most of those took place on 30m using my FT817 transmitter, sometimes with software that I wrote myself.  But I’ve long thought that I should homebrew a […]

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 […]

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

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

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 […]

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): (The blank regions are the two minute intervals where I am sending a WSPR beacon message.) With a bit […]

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 […]