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Category Archives: Satellites
QO-100 / 10GHz DownConverter Update
When building my modular 10GHz /P transverter I identified a number of areas where some minor changes could potentially improve the overall performance and build experience. As I plan to build another 10GHz transverter to go up on my main … Continue reading
Black ADF4351 Eval Boards
Having used a number of these readily available “black ADF4351 boards” along with an Arduino Mini-Pro and SynthShield PCB in various projects I’ve learnt that not all the boards on sale are the same. They can differ both in component … Continue reading
Fun on 10GHz – Decoding DL0SHF beacon using QO-100 system
Having been away from home for a while I was keen to “get back on the radio”. EME conditions were looking good, degradation very low, Moon near Perigee and Moon pass times good, i.e. not in the middle of the … Continue reading
Posted in 3cms, Blog, EME, GHz_Bands, QO-100, Satellites
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10GHz Small Dish EME Project – 1
My experiments with the small 65cms OS dish encouraged me to push on with the work needed to get the 1.2m dish up on the mast. The EchoStar dish had sat in my shed gathering dust for several months. I … Continue reading
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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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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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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