Roger G3XBM's (Mainly) Amateur Radio Blog

Breadboarded 137kHz 8W transverter (ERP 50uW from antenna) Simple 137kHz QRP transverter - click for larger image Today I combined the...

Does anyone know how much the cash-strapped BBC is spending on DRM transmissions on shortwave ? Also, does anyone actually use a proper SW r...

Today I have been gathering data and information for my 4m QRP transverter and started on an "on paper" design around an NE602 RX ...

A decent set of reports this evening with my 1mW ERP WSPR beacon on 500kHz. Best DX DF4PV's report at 597km. Also I copied Gerhard DI2AF...

The FT817 does not have a DC voltage change between RX and TX on the antenna connector, unlike the old IC202. This voltage was very useful t...

There are rumours, apparently with some substance, that a Chinese mulitmode transceiver for 4m may be being designed. This would not be too ...

70.1 - 70.3 MHz will soon be available to the Polish radio amateur service on secondary basis. The maximum power will be 20W EIRP. Date of ...

It is almost certain now that my next project will be a 5W transverter for 4m. This is a band I have never used under my own call and for wh...

Despite having my antenna and receiver system well optimised and running a Spectrum Lab configuration file allowing very sensitive detectio...

Gerhard OE3GHB hopes to be transmitting on VLF this Saturday (Jan 22nd) on 8.96995kHz (+/- 0.03Hz) starting between 0800-0900z. Although th...