Category Archives: EME

Fun on 10GHz – 3 ‘EME Experiment’

Posted on September 14, 2022 by g4hsk

The prolonged hot and dry spell that the UK and most of Europe has experienced has meant that there’s been no rain to enhance the capabilities of my small 10GHz home setup. My small dish only has a clear take-off … Continue reading →

Posted in 3cms, Blog, Elecraft K3, EME, GHz_Bands | Leave a comment

QO-100 Experiments – Maclean MCTV-670 LNB

Posted on September 11, 2022 by g4hsk

I was asked recently which LNB is most popular with QO-100 users and is the easiest to modify to improve frequency stability. Several “off the shelf” names sprang to mind, they’re often advertised as TCXO controlled or PLL suitable for … Continue reading →

Posted in Blog, EME, GHz_Bands, QO-100, Satellites | Leave a comment

Yaesu G-5500 Elevation Rotator Repair

Posted on October 20, 2021 by g4hsk

In a previous post I described how my G-5500 rotator had failed and would no longer elevate my antennas. Based on what I was seeing at the time and a quick check with a DVM I believed that one of … Continue reading →

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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

Yaesu G-5500 Fault – No 2

Posted on October 27, 2020 by g4hsk

I’ve been using a Yaesu G-5500 Azimuth and Elevation rotator for the last seven years. It has been used to rotate various Yagi antennas, initially a single 9 element DK7ZB  for 144Mhz, that was replaced with 2×8 element 144Mhz Yagi … Continue reading →

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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 – 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 →

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Yaesu G-5500 Fault

Posted on August 4, 2019 by g4hsk

  About two weeks ago my Yaesu G-5500 rotator controller developed a strange fault. The Azimuth (AZ) meter would not display correctly, the Elevation (EL) meter was working fine. The AZ meter showed only ~20 degrees but the EME antennas … Continue reading →

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A ProgRock and a very old MMT 144/28 Transverter

Posted on May 2, 2018 by g4hsk

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 →

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

Posted on March 20, 2018 by g4hsk

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 →

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