Johnson's Techworld

Trying to Decode Recorded Telemetry of BeliefSat-0 Using Sound Modem Sound Modem 114 by UZ7HO was suggested to me by VU3TYG as an option to decode telemetry signals

Modified Inverted V 40 m Antenna I had mounted my Inverted V 40 m Zig-Zag Antenna on a 3 m long CPVC hotwater pipe kept on the fence

Robotic Vacuum Cleaner Going Round and Round – Any Solution? This robotic vacuum cleaner had been working well for a few years. Now it has started going round

Line Isolator or RF ‘Choke’? Few days back I had built an Inverted V Dipole Antenna for 40 Meter and mounted it in a zig-zag fashion due to

What is the difference between DVI and HDMI? My FT-710 AESS radio needs a DVI-D cable to connect to an external display. During an online discussion, another radio

Tuning and Testing My 40 m Inverted V Zig-Zag Antenna Yesterday I had posted about the good reception of HF Nets on my untuned Inverted V Zig-Zag Antenna.

Listening to HF Nets With Inverted V Zig-Zag Antenna! Couple of days back I had posted on Checking RX on FT-710 AESS with RG 213 and No Antenna

My New Soldering Kit! Bought a new soldering kit online. It was a same day delivery and costing just 250 INR, meaning around $3. Not that I did

Trying to Build a 40 Meter Inverted V Dipole in Zig-Zag Fashion! In my first stint on amateur radio I have used inverted V and horizontal dipole antennas

Troposcatter Propagation Model in VHF/UHF/SHF Tropospheric scatter is said to be the most reliable propagation mode for working DX on VHF, UHF and microwave. Other modes like duct