Johnson's Techworld

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

Why do you need circularly polarized antenna for working amateur radio satellites? Most of the antennas which radio amateurs use on HF/VHF/UHF bands have linear polarization, either vertical

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

Video Tour of ICOM 2730 VHF-UHF Dual Bander Previous post: ICOM 2730 VHF/UHF Dual Band Ham Radio Transcript of the YouTube video tour with still images: Here is

Wow! A DXpedition for EME – OJ0EME! Today morning I was browsing my Twitter home page when I came across OJ0EME DXpedition focussed on EME. EME or Earth-Moon-Earth

Why is 6 Meter the Magic Band Sometimes Called the Tragic Band? I had discussed earlier on why 6 meter is called the magic band. While you can

Morse Code for Ham Radio Made Easy 4! In Morse Code for Ham Radio Made Easy 3 we practised the simple EISH, TMO and AN. Now we will

CAT 6 Ethernet Cable We purchased this CAT 6 cable of 5 m length, precrimped with RJ45 plugs (8P8C modular connector) at both ends. An RJ45 coupler was

What is Inside a CAT 5 LAN Cable? I have been using CAT 5 or Category 5 cable for my home local area network or LAN for decades.