LA3ZA Radio and Electronics

My Elecraft K2  which I assembled as a kit in 2001, has mainly been a CW rig, but now I wanted to use it more for digital modes like FT8 als...

The program for FT8 and other digital modes, WSJT-X, requires control over the communications port of a rig like the Elecraft K3. But so doe...

My friend Alf, LA2NTA, has sent me these screenshots from when he has been operating FT8. The first image is when operating 10 meters and to...

A spot reported by K1JT must be the ultimate goal for the WSPR mode. K1JT, Joseph Taylor , is the Nobel laureate who first developed this ...

Tonight I made the first successful decoding of WSPR on the 630 m band. What inspired me was all the talk on the Elecraft reflector on the...

For me South America, Australia, and Africa are quite rare on WSPR. But they all heard my tiny 0.2 W signal the night between 31 March and...

For the first time ever I have been spotted on all the five bands that my Ultimate3 QRSS/WSPR kit (G0UPL design) is transmitting on. This i...

I'm a great fan of Hans Summers (G0UPL) and his effort in launching kits for various slow speed modes. In fact I have all three genera...

There aren't that many modifications that you can do to the Elecraft K3. This is very different from the K2 as in my list I now have 138...

Multiple decodes at 100 Hz spacing of K1JT on 30 m on 28 April 2013, 0101 UTC From time to time I receive duplicate 'ghost' dec...

Sometimes it is crowded on JT65 on HF due to too little bandwidth. When only 2 kHz is available and each signal needs 175 Hz that's unde...

My APRS -based temperature monitor has now worked flawlessly for half a year. APRS stands for Automatic Packet Reporting System so it can se...

My first beacon on 30 m, a free-running Ultimate QRSS kit (no GPS) has now been running for a full 24 hours using the Weak Signal Propaga...