Category Archives: 3cms

QO-100 Experiments – New Down-converter

Posted on February 13, 2021 by g4hsk

Probably like most people starting out with QO-100 operation I initially used the Goonhilly QO-100 WebSDR to listen to the satellite down-link. This inspired me to experiment with an LNB, a 65cm offset dish, and a NooElec SDR module with … Continue reading →

Posted in 3cms, ADF4351, Anglian TVTR, Arduino, Blog, EME, GHz_Bands, QO-100, Satellites | Leave a comment

QO-100 Experiments – ADF4351 SynthShield

Posted on January 21, 2021 by g4hsk

I’ve recently used a number of ADF4351 modules in various projects. The last two modules have been used to provide a single fixed frequency output. An Arduino Nano running the F1CJN single frequency sketch is used to control the ADF4351. … Continue reading →

Posted in 3cms, ADF4351, Arduino, Blog, GHz_Bands, QO-100, Satellites | Leave a comment

QO-100 Experiments – LNB Modifications

Posted on July 28, 2020 by g4hsk

I have been using a Goobay 67269 LNB with a small Horn antenna on 10368MHz for a while to monitor beacons via rain-scatter. This was a fairly basic setup, the Chaparral horn had been cut-off and the LNB mated to … Continue reading →

Posted in 3cms, Blog, GHz_Bands, QO-100, Satellites, SDR | Leave a comment

Enhanced USB-to-Serial PTT Interface

Posted on March 1, 2020 by g4hsk

Many of the modern transceivers today support direct USB connectivity to your shack PC. This USB connection typically enables 2-way audio and CAT control allowing more or less full control of the transceiver, including PTT keying. Where CAT control for … Continue reading →

Posted in 23cms, 3cms, 70cms, Anglian TVTR, Blog, EME, GHz_Bands, QO-100, Satellites | Leave a comment

Fun on 10GHz – 2 ‘Rain-Scatter’

Posted on October 7, 2019 by g4hsk

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 | Leave a comment

Fun on 10GHz – 1

Posted on August 13, 2019 by g4hsk

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 | Leave a comment

10GHz – Frequency Accuracy and Stability

Posted on May 27, 2019 by g4hsk

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 | Leave a comment

ZLPLL

Posted on December 2, 2015 by g4hsk

I built my 2m transverter with the intention of using it primarily for EME (JT65), driving either my 2m PA or at some point in the future as the IF for one or more microwave transverters. To ensure that I … Continue reading →

Posted in 23cms, 2M, 3cms, Anglian TVTR, Blog, EME, GHz_Bands, QRSS / WSPR / QRP | Leave a comment