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Category Archives: Blog
QRPp WSPR and FSKCW tests on 40m using the U3
I recently built the QRP-Labs LPF switching board plus a couple of extra filters for 80m and 40m. I’d had these kits gathering dust for probably 12 months plus. Other projects had taken priority and I’d not really run any … Continue reading
Posted in Blog, QRSS / WSPR / QRP
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Constructing another K3NG Rotator Controller
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
Posted in Arduino, Blog, EME
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TrakBox with MAP65 and LP_Bridge
Since I started running MAP65 it has always been run on a separate laptop along with Linrad. This was primarily due to the amount of monitor “real-estate” that was needed for all the various programs that normally run when operating … Continue reading
Posted in Blog, EME
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Anglian TVTR Drive Control
It’s been a while since I’ve posted any updates. Lots of little changes have been happening on the 2m front, with hopefully each change making a slight improvement to the overall working of my small (by EME standards) system. I … Continue reading
Posted in Anglian TVTR, Blog
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Switching_Antennas_Remotely
With inclement weather forecast over the Xmas period I was keen to try and implement some form of remote switching of the 144MHz and 1296MHz EME antennas. The antenna feeds terminate in a waterproof cabinet at the base of the … Continue reading
Posted in Blog, Raspberry_Pi, Remote_operation
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Remote_Power_Pi
Today I picked up a project that I had started at the beginning of the year. It uses the Raspberry Pi (RPi) computer to provide remote control of up to 8 events, each switched by relay. My plan is to … Continue reading
Posted in Raspberry_Pi, Remote_operation
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10MHz GPS Disciplined Oscillator and NTP Server
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
Posted in Arduino, Blog
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23cms VLNA
Thanks to Colin, G6AVK who did the ordering, I now have my DDK 23cms VLNA kit. 🙂 Apart from building it, the next step is to source some suitable relays.
ZLPLL
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
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LDF5-50 based Magnetic Loop Antenna
Having had great success with a loop made using LDF4-50 Heliax and the much smaller 24″ diameter bicycle wheel rim loop I decided to try making a larger loop that would work on the 17m, 20m and 30m bands and … Continue reading
Posted in Blog, Magnetic Loops
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G4HSK 