Roger G3XBM's (Mainly) Amateur Radio Blog

Many years ago I designed and built this transceiver for 80m CW. It has been on the blog before. It is also on my website.  It just goes to ...

 When I was fit (before my stroke!) I liked the challenge of "something for nothing".  This is how this little 80m CW transceiver ...

At the moment I am back on 80m QRP FT8 with my QMX+ and the coax up to my 2m big-wheel as the antenna, tuned via an ATU. Lots of spots alrea...

So far today, with my "ad hoc" 80m antenna (coax outer tuned via an ATU and the QMX+) 27 stations have spotted me. See map.

In the last day my QRP 80m FT8  has been spotted by 58 stations across Europe using just the outer of the coax up to my 2m big-wheel tuned w...

Currently I am on 80m QRP FT8 using my QMX+ into an ATU and the outer of the co-ax up to my 2m big-wheel antenna. Lots of spots on RX and on...

One of the aspects that I enjoyed was seeing how few parts were needed to make QSOs. This is one of the simplest circuits. See  https://site...

Years ago I was inspired by a circuit for a 40m transceiver by W2UW who is now a SK. My challenge was to see if I could make an 80m versio...

This was another of my attempts to get something for nothing!  It worked remarkably well, but I struggled with netting the RX onto the TX fr...

 It is always good to see others trying their hand at my designs. DX Explorer has a video of him breadboarding my 2 transistor 80m transceiv...

 As I mentioned in an earlier post today, 630m WSPR seems to have "gone off the boil" and I may try something new over the spring ...

My 80m QRP (2.5W) has been on for the last few hours. My "antenna" is the (almost invisible) earth-electrodes in the ground on whi...

This has been on before, but I make no excuses for posting it again. One of the challenges in amateur radio is to see how simple a complete ...

This has been on before, I know. Some years ago, I wanted to see how simple one could make a rig that actually worked. There is no doubt at ...

80m FT8 spots of my QRP using the earth-electrode "antenna" in the ground As I managed to match the FT-710 to the earth-electrode ...

Just might try 80m FT8 TX this evening after dark when 10m is no good. It means matching the FT-710 to the earth-electrode "antenna...

As 6m was so poor, I QSYed to 80m FT8 using the earth-electrode "antenna" in the ground. Although I am receiving spots of my signa...

 At 1255z, I moved from 160m FT8 (no spots) to 80m FT8 using the earth-electrode "antenna" in the ground. The FT8 frequency on 80m...

One of the challenges in amateur radio is how simple can you make a rig that really communicates? Some years ago I designed and built this u...

This was a challenge I wanted to have a go at. This is probably one of the simplest transceivers one can make. My inspiration came from a 40...