Category: Amateur Radio (Ham Radio)

What is T-Bias/Bias Tee for Antenna Pre-Amplifier? T-Bias/Bias Tee is also known as DC injector. When you have a remote antenna pre-amplifier to boost weak signal, T-Bias or

Morse Code Practice Session 7 We have covered up to EISH, TMO, AN, UD, VB and W, G in Morse Code for Ham Radio Part 6. Now we

Morse Key, Keyer and the “Bug” in Amateur Radio! We often hear about Straight Key, Keyer Paddles and the “Bug” during discussions among ardent Morse Code operators in

What is Duct Propagation of Radio Waves? Duct propagation is a special type of propagation around the curvature of the earth even as much as 1000 km, at

Morse Code for Ham Radio Part 6 So far we have covered up to EISH, TMO, AN, UD and VB till Morse Code for Ham Radio Part 5.

Microstrip antenna is a relatively recent invention, mainly used in microwave band. It is possible to integrate a microstrip antenna along with driving circuit on a common printed

Morse Code for Ham Radio Part 5 In Morse Code for Ham Radio Made Easy 4 we practised EISH, TMO, AN and UD. Now we will add two

Homebrewing VHF Yagi Part 4, The Tests! One more hole was drilled in the L shaped metal piece for holding the SO 239 antenna connector to be fixed

Extremely Low Frequency (ELF) for Submarine Communication The lowest frequency allocated to Radio Amateurs in India is the 135.7-137.8 kHz in the Low Frequency or LF band from