Category Archives: GHz_Bands

QO-100 Experiments – 2400MHz Pipe-Cap Filter

Over the years I’d seen a number of projects that were using one or more pipe-cap filters. They looked as if they should be fairly simple to make so I thought I should try one to help reduce the unwanted … Continue reading

Posted in Blog, GHz_Bands, QO-100, Satellites

QO-100 Experiments – 2256MHz Local Oscillator

I chose to use an ADF4351 based synthesizer module to generate the 2256MHz local oscillator (LO) needed for my QO-100 QRP  transmit converter. This is controlled by an Arduino Nano. Having already used one of these modules for the 54 … Continue reading

Posted in Blog, GHz_Bands, QO-100, Satellites

QO-100 Experiments – QRP Transmit Converter

Having spent some time listening to the QO-100 satellite using the Goonhilly WebSDR facility and my own temporary receive solutions, I decided it was time to try generating some RF and get a signal up to the satellite. I was … Continue reading

Posted in Blog, GHz_Bands, QO-100, Satellites

Fun on 10GHz – 2 ‘Rain-Scatter’

I’m still what some might call a novice when it comes to the 10GHz band. It’s a band that’s like no other that I’ve operated on, and I’m hooked on it. I’ve recently discovered first-hand the effect of rain-scatter at … Continue reading

Posted in 3cms, Blog, GHz_Bands, Mobile / portable Operation

Fun on 10GHz – 1

Over the last 20 years or so I’ve rarely operated my radio equipment away from home. This has changed since I’ve caught the “microwave bug” and got started on the 10GHz band. My 10GHz setup comprised initially of just a … Continue reading

Posted in 3cms, Blog, EME, GHz_Bands

10GHz – Frequency Accuracy and Stability

One of the key things that I have learnt from my EME activities is that frequency accuracy and stability is very important. My current 10GHz equipment comprises of a DB6NT G4 Transverter (TVTR) and an ICOM IC-706 transceiver for the … Continue reading

Posted in 3cms, Blog, GHz_Bands

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 ,

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

A Fun Couple Of Days On 23cms

Having recently completed the ~20W PA for 23cms I was looking for some activity on the band to see what difference the extra few watts would make. Unfortunately I had just missed the monthly UKAC session. Reading the UKMicrowave Digest I … Continue reading

Posted in 23cms, Blog, EME, GHz_Bands