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Bio
My Ham Radio callsign is G1OJS and my name is Alan Robinson.
I’m now retired from 30 years working in the Space Industry after completing a PhD in Electromagnetics in 1992. I’ve been interested in electronics since I was about 8 or 9 years old (1975?) and had my ham radio license since 1985. I’ve always been interested in antennas and a lot of what I do now is about making them and testing them.
You can find quite a lot of ham radio content from me on my G1OJS pages at Instagram, and more about me on my G1OJS page at QRZ.com.
On this site:
Airband Radio Receivers
G1OJS VHF Airband Scanner using ATTiny85, Si5351, NE612 and MC1350
G1OJS VHF Airband Superhet Receiver
G1OJS VHF Airband Superregen Receiver Altoids Tin
G1OJS VHF Airband Superregen Receiver with Speaker and Squelch
“Magnetic” loops and capacitors
A High Performance QRO Magloop without a Vacuum Capacitor?
Calculating padding capacitors
TV Remote decoder for Motorised Volume Control
TV Remote Decoder (no library needed)
Dedicated Sites
BandOpticon: see who’s active in your country and who’s receiving who
SARK100 Firmware and all about RF Bridges
