Forum Chat

[Thunderbird]

 I dunno which knob jockey came up with those rules and regulations

I do... he is a mate of mine and there are reasons for the restrictions.

Here is an e.g:  You go buy a Ripp Off Stock GME 80ch UHF CB radio with an output of 5 Watts and install it into your car.   You then buy an RFI 6.5dBi antenna with 5m of Belden RG-58 and attach and connect it to your "legal" UHF CB radio.

5 Watts coming out of the "legal" UHF CB radio goes into the 6.5dBi RFI mobile antenna,  the total Loss of RF travelling in the 5 meters of RG-58 coaxial cable is 1.52dB which then leaves a total of 3.524 watts out of the original 5 watts coming out of the UHF CB radio that now gets to the antenna.   3.524 watts then enters the RFI 6.5dBi mobile Antenna and is then amplified in the way of "gain" and then that 3.524 watts that entered the antenna is now turned into 9.598 watts ERP and / or 15.741 watts EIRP!!   So this is now "Illegal" technically speaking.     Most people use even less length of coax cable so the power would be even higher in real life circumstances.  Just imagine if we are talking Big home base station Verticals that you can buy for "CB"    


'tis true.