Roger G3XBM's (Mainly) Amateur Radio Blog

This photo of my homebrew 15m QRP CW transceiver was found when I was looking through some old stuff. This was an 800mW transceiver. It work...

At the moment 15m is a very useful band. It stays open longer than 10m and with the high sunspot count, it is capable of worldwide DX.  Alth...

We can all agree that HF conditions are good on the whole. The higher HF bands are suitable for worldwide contacts and conditions are likely...

This design is now quite old, but it goes to show that things do not have to be complicated to work. It was derived from my Pipit 15m transc...

 A good DX band is 15m. This is mainly a daytime DX band, but evening openings are increasing as the sunspot count and solar flux go up. The...

This design is now very old. It dates from way before the end of the last century. It appeared in GQRP SPRAT magazine. This was way before d...

Many years ago I designed and made this QRP (800mW) CW rig of 15m.  It worked remarkably well and worked some impressive DX.  For several mo...

It seems amazing that I designed and built my Pipit 15m CW QRP transceiver so long ago!  For a long time this was my main rig and gave me l...

Pretty sure this has appeared before, but not sure when! Back in the 1980s I designed an 800mW, VXO controlled, transceiver for 15m CW. ...

This was on before but it is worth repeating. Many years ago, I needed a simple QRP CW transceiver for 15m. The result was the Pipit, wh...

It is amazing to think this was first designed and made in the 1980s! It worked some impressive DX in its day and worked very well with ju...

Many years ago, I designed and built this little 800mW CW transceiver for 15m. It worked really well, although sadly it was pulled apart y...

Way back in the 1980s I designed and built this tiny transceiver for 15m CW. For months it was the only rig I used. It worked remarkably ...

Way back in 1984 I designed and built the Pipit 15m 800mW CW transceiver. For months it was the only rig I used. Some good DX was worked...

Some years ago my only rig in use was my homebrew QRP transceiver on 15m. With just a low wire dipole and 800mW I worked lots and lots. S...

Many years ago I designed and built the Pipit, an 800mW CW transceiver with a direct conversion receiver. It really worked and for some ti...

This rig was designed and built many years ago. It spanned some impressive distances and worked well. The receiver was a direct conversion ...