Category Archives: Blog

Revisiting the LDF4-50 MagLoop

Today I decided to enjoy the fine weather and do some further outdoor tests with the LDF4-50 MagLoop. I constructed this loop last year. Up until now this loop hasn’t really been used, all my MagLoop experiments have been done … Continue reading

Posted in Blog, Magnetic Loops, Mobile / portable Operation, QRSS / WSPR / QRP

A ProgRock and a very old MMT 144/28 Transverter

Having got the 10MHz side of the ProgRock project working (see here for details) the next stage was to look at the 116MHz output. If this was also acceptable, I would have an alternative means of generating the two frequencies … Continue reading

Posted in 23cms, Blog, EME, GHz_Bands | Tagged ,

Building a ProgRock kit for use as a frequency reference for VHF / UHF Transverters – 1

The ProgRock is a kit produced by QRP-Labs. It is described as a triple GPS-disciplined programmable crystal, based around a Si5351A Synthesizer. Having read positive reports on the ProgRock I decided to order one, plus the optional GPS kit. I … Continue reading

Posted in Blog, EME | Tagged , | 1 Comment

LDF5-50 MagLoop on 80m

When I first made this MagLoop my goal was to be able to use it on the 40m band, and this was achieved. Recently I began to wonder if it might also work on 80m. So the MagLoop was setup … Continue reading

Posted in Blog, Magnetic Loops, QRSS / WSPR / QRP

Homemade Satellite Antenna

I was at one time quite active on the early OSCAR satellites. In those days (I’m going back over 35+ years) it was 2m to 10m linear transponder(s). Having not done anything with satellite communications for such a long time … Continue reading

Posted in 70cms, Blog, Satellites

An SDR based QRSS Grabber

About a year ago I purchased the NooElec Ham It Up v1.3 bare bones HF Up-converter (HFU) to use with their NeSDR SMArt dongle. The plan at that time was to get an SDR-based QRSS Grabber running online 24/7. For … Continue reading

Posted in Blog, QRSS / WSPR / QRP, SDR

Not QRT

It’s been several months since my last blog post. Although little has happened as far as updates to my website / Blog there’s been a fair amount of activity going on behind the scenes. Some of this activity has been … Continue reading

Posted in Blog

A new LDF4-50 Magnetic Loop Antenna

Having recently changed my car I realised this week that the diameter of my LDF5-50 Magnetic Loop (ML) is fractionally too big to fit in the back of my new car!!! So something needed to be done if I wanted … Continue reading

Posted in Blog, Magnetic Loops

23cms VLNA Finally Installed at the Masthead

It’s been a long slow process but today I finally finished installing the G4DDK 23cms VLNA at the masthead. The extended timeline was partly due to some other improvements that needed to be done to the 2m EME setup and … Continue reading

Posted in 23cms, Blog, EME, GHz_Bands

Tidy-up of the 1.3GHz Transverter

Having completed the 1.3GHz PA and established that things work well with the transverter (TVTR) and PA located in the shack it was time to tidy things up a bit. I had a spare enclosure that matched the Anglian TVTR and … Continue reading

Posted in 23cms, Blog, GHz_Bands