Roger G3XBM's (Mainly) Amateur Radio Blog

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&quo...

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...

Many years ago, I built the XBM80-2 80m CW transceiver. It never got cased, but shows how simple a transceiver can be! Somewhere recently I ...

It seems like yesterday, but this was designed in 2008. Starting from the 40m design by W2UW (SK) I wanted to see how simple a transceiver c...

  Just how simple can you make a transceiver that actually works? This is on my main website. I hope it gives you some ideas. See  https://s...

As 10m is closing, I have QSYed down to 80m FT8 RX using the Wellgood active loop on the shack window. It has been on for about 10 minutes a...

As 6m is quiet here today, I have QSYed to 80m FT8 RX with the indoor Wellgood active loop. So far,  80 stations spotted. The furthermost is...

Last evening and overnight I was on 80m FT8 RX with the Wellgood active loop on the shack window indoors. 796 stations spotted, but nothing ...