Category Archives: Arduino

AD8317 + Arduino RF Power Meter # 2

Posted on March 28, 2022 by g4hsk

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 →

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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

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

An Arduino Based Four Event Sequencer

Posted on February 24, 2020 by g4hsk

When putting together a system using RF switching relays, Low Noise Amplifiers (LNA) and RF power it’s important that things are switched at the right time and in the correct sequence. This ensures that the relays do not actually switch … Continue reading →

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An Arduino Based Antenna Switch For The IC-7300

Posted on November 20, 2018 by g4hsk

Since purchasing the IC-7300 I’ve used it mainly on 4m and 6m with the occasional venture down onto the lower bands. With the Sporadic-E season and good conditions on 10m it highlighted one of the shortcomings of the IC-7300… it … Continue reading →

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An Arduino Based Vector Network Analyser

Posted on March 7, 2017 by g4hsk

My first opportunity to experience first-hand the advantages of owning a network analyser  was when Charlie, M0PZT kindly brought his MFJ-259 Analyser over and we took a look at a Magnetic Loop antenna that I’d constructed. It was suddenly so very easy … Continue reading →

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Constructing another K3NG Rotator Controller

Posted on November 24, 2016 by g4hsk

I recently spent a day helping a friend setup his new rotator and single 8 element yagi for EME operation. The weather was kind to us and after a few hours work we had everything aligned as best we could.  This … Continue reading →

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10MHz GPS Disciplined Oscillator and NTP Server

Posted on December 14, 2015 by g4hsk

Given that most modern transceivers today are available with a built-in TCXO module I was sceptical about the need to have a 10MHz GPSDO (GPS Disciplined Oscillator) as part of the equipment in my shack. That was until my interest … Continue reading →

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