Posted by Jack on 5th April 2012
This morning I was grabbed on QRSS. Let me explain: QRSS is CW sent REALLY slow (hence QRSs) using automated low power transmitters. I built one of the Hans Summers MEPT kits for 30m and have had it running when I’m around the shack:
My QRSS MEPT for 30m, puts out an astounding 100mw
“Grabbers” are stations that are listening using programs like Argo or QRSS viewer or MultiPSK to analyze a very tiny sub-band (like 200 Herz or so) and do a screen-capture, or ‘screen-GRAB’ of the waterfall at regular intervals. A ‘grab’ is someone seeing your callsign in their grabber archive.
W4HBK, who runs the ‘Pensacola Snapper‘, sent me an email this morning with this attached:
K6JEB received at W4HBK
My QRSS ‘beacon’ puts out a ‘whopping’ 100milliwatts. It is connected to an Inverted-L cut for 160m but tuned with an antenna tuner for 30m.
Here’s a close-up of my signal from the W4HBK 10-minute archives:
K6JEB received at W4HBK, my signal is at 10.140050-10.140055
Posted in qrp, QRSS, QSL, soapbox | Comments Off on I’ve been GRABBED, on QRSS
Posted by Jack on 31st March 2012
I finally had time, and (Nitto) awesome double-sided tape to run the G-code for the BLTuner pcb I had written about earlier.
Excellent results! And I was being a total chicken$hit with the feed rate, I could have run it easily at 4 inches per minute.
There were actually two toolpaths: the first was the actual pad isolation and the second was cutting the small board out. I did the first with the 3mm V-bit sold by Zen Toolworks and the profile cut-out with a 1/8 ballnose.
Posted in CNC, computers, qrp, soapbox | Comments Off on Update on the BLTuner PCB CNC project
Posted by Jack on 16th March 2012
After all, we are QRP DIYers, right? Pulled the oblique angle image from the instructions into Photoshop and re-created it, hopefully fairly close to scale. Then I exported the JPEG into Vectric V-Carve Pro to create toolpaths (G-Code) for my CNC. On the left you see the original and on the right is a preview image of the toolpaths.
A while back, I bought the kit, which had been originally purchased by K6ZAN but after he became a Silent Key, it wound up back in circulation. The pcb that was with the kit wasn’t etched. So this is my first time using isolation routing to make a pcb.
Posted in qrp, soapbox | Comments Off on NorCal BLTuner PCB art? never mind, I re-created it myself :)