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Author Archives: g4hsk
Fun on 10GHz – 3 ‘EME Experiment’
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
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QO-100 Experiments – Maclean MCTV-670 LNB
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
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QO-100 Experiments – 2.4GHz UMTS PA
I spent a long time looking at the various power amplifiers being advertised for QO-100 use. My ideal unit being one that could be used for both QO-100 and normal 13cm terrestrial operation down at 2320MHz. It could be a … Continue reading
Posted in Blog, GHz_Bands, QO-100, Satellites
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Yaesu FF-501DX Low Pass Filter
I purchased the FF-501DX LPF along with a number of other items. It belonged to a very good friend, sadly it was part of his SK sale! As my interests are very much VHF upwards, along with the odd session … Continue reading
Posted in Blog, IC-7300, IC-735
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AD8317 + Arduino RF Power Meter # 2
I built an AD8317 power meter a couple years ago. The AD8317 is specified for operation up to 8 GHz, but it provides useful measurement accuracy over a reduced dynamic range of up to 10 GHz. With suitable software and … Continue reading
Posted in AD8317, Arduino, Blog
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QO-100 Experiments – New QRP Transmit Up-converter
I started out on QO-100 using a small home made transmit up-converter built around a number of modules available from eBay. Apart from some failed mixer boards this setup worked well for a period of 18 months or so. I … Continue reading
Posted in ADF4351, Blog, GHz_Bands, QO-100, Satellites
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K3 Panadapter using the NooElec Upconverter + SDR + SDR-Console
My K3/10 has been used primarily with transverters for the VHF and higher bands (it has seen hardly any real use on the HF bands). A FCDPP connected via a splitter to the IF output of the 2m transverter, plus … Continue reading
Posted in Blog, Elecraft K3, SDR
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Yaesu G-5500 Elevation Rotator Repair
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
Posted in Blog, EME, GHz_Bands, Satellites
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QO-100 Experiments – New Down-converter
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
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QO-100 Experiments – ADF4351 SynthShield
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
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G4HSK 