Roger G3XBM's (Mainly) Amateur Radio Blog

This photo was (re)discovered yesterday. I think it was the original Chirpy transceiver that was replaced by the Lesser Chirpy as this had ...

Looking through my old photos, I came across this one.  I think it is the original Chirpy 10m transceiver.  This was later replaced by the L...

Another report via the Reverse Beacon Network from 5B4AGN in Cyprus this morning, but no QSOs and no further RBN spots. A brief outing thi...

Lesser Chirpy (should be No Chirpy!) 10m transceiver At last I've got around to putting my Lesser Chirpy ultra simple 28MHz CW trans...

You may recall that some months back I did a tiny transceiver for 10m CW ....that chirped. Well, this is the latest version that does NOT ch...

SPRAT 151 had my article on Chirpy, an ultra-simple, very basic crystal controlled CW transceiver for 28MHz. This does work and has even man...

WA0UWH's version of Chirpy Eldon WA0UWH has built an SMA version of my 10m Chirpy transceiver on a VERY tiny PCB. He is currently ...

Today I got this email from Martin about his build of Chirpy: Hi Roger, Somehow the text of my email got lost when I send it from my phon...

Martin Spreemann (callsign not known) in Berlin has sent me a picture of his version of Chirpy, the minimal component transceiver for 28MH...

Ondra OK1CDJ kindly sent me some photos of his version of my 10m chirpy transceiver. Currently he is getting around 50mW out, a little lo...

Last week G6ALB made a copy of my Chirpy 14 component transceiver for 28MHz CW . Andrew had access to some better calibrated test equipmen...

This is a short video showing " Chirpy " (XBM10-2), my 14 component 28MHz CW transceiver. More details can be found at...

28MHz "Chirpy" Transceiver with tuned antenna match In the last day I  have made some changes to my ultra-simple CW transcei...