But in most cases it’s useless. Sliding a piece of metal wire in the antenna or removing the original antenna and solder the wire in its place does no good at all.
In that case, there is no easy method of using a larger antenna to increase your range. Surfing around the net gave me some ideas about what others are doing. I saw examples where a small BNC connector is place instead of the antenna, a short piece of coax, a coupling loop, …
The radio must have an integreated antenna, so no antenna connector, bummer
The Belgian law says that the radio have to be portable (walkie-talkie), integrated antenna and 500 mW maximum effective radiated power (ERP). This could mean that if your antenna has a ‘gain’ of -3 db you may have 1000 mW of power at the bottom of your antenna (3 db is 2 times the power).
Most radios are equipped with 38 CTCSS tones, sometimes called sub-channels.
PMR446 stands for Personal Mobile Radio and is a license free radio in the 446 MHz UHF band. That is about 6 Mhz above the 70cm amateur radio band. There are 8 channels starting at 446.00625 MHz and ending at 446.09375, spaced 12.5 kHz apart.
This post is taken from my old website. I’m still dismantling that site.
Blog and website of a Belgian ham radio operator who likes to build antennas and other projects.
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