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WHAT ARE THE DIFFERENT TYPES OF ANTENNAS AND WHAT ARE THE ADVANTAGES AND DISADVANTAGES?

In the case of antennas for portable two way radios, we roughly distinguish between short - so-called stubby antennas and long antennas - helical or helical antenna. 

What do I have to pay attention to? That the antenna fits both from the screw thread on the handheld radio and that the frequencies used in the radio are in the frequency range of the antenna. 

I have programmed many frequencies or I do not know which frequencies are used. In this case it´s the easiest way to use a wideband antenna that covers the entire frequency range of the respective frequency band. Some manufacturers also use colour markings for distinction on the antenna thread - just unscrew it. 

What are the advantages and disadvantages of short and long antennas? Short antennas are usually more comfortable to wear, but cover a smaller frequency range, especially in the VHF frequency band. Longer antennas exert less mechanical stress on the antenna socket of the radio and cover a wider frequency range. 

Some antennas marked with GPS what does that mean? Some handheld radios have built-in GPS receivers without their own antenna. If you use them, you need antennas that can cover the frequency range of GPS as well as the frequency range of VHF or UHF. 

Filter first by manufacturer and then by radio model to find a suitable antenna.
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