THESE RADIOS REQUIRE ELECTRET CONDENSER MICS MK393 BC645 KCB4E

Old school 1990s built in the Philippines radio notice how the LED digits look for the numbers 6 and 9 - the newer radios' LED display shows an additional segment on the LED for 6 and 9 digits on the channel display.

These radios use a high impedance electret condenser microphone...a regular dynamic CB microphone will not work well with the Uniden PRO520XL the Uniden PRO510XL and several other radios, including the Midland 1001Z. The modern version of the microphone is the Uniden BC645 CB mic. Also see: Uniden MK393 stock high impedance microphone.

Old school Cobra 19 and other radios with the 5-pin DIN style connector mic wiring also were high impedance 1000ohm condenser mics. Radio Shack RadioShack Realistic CB radios used these types of mics too.

Radios like the Uniden PRO538W actually have a powered microphone (that's right - a factory stock power mic - sort of like a D104 M6B Astatic Road Devil amplified mic). I use a Kalibur Kcb4E KCB4E 4 Pin Cobra & Uniden Electret Replacement Microphone electret microphone 1000 ohm impedance mic mike CB radio mic...these radios are actually little powerhouses. The Uniden PRO505XL, PRO510XL and PRO520XL. There are variations in the different generations of the Uniden 510 and Uniden 520 - see also, the Uniden 500D PRO500 PRO500D PRO-520XL. Different FCC ID (on the back panel data plate) for the old version original Uniden PRO 520XL radio.

The Uniden PC66XL PC76XL PC68XL PC78LTX PC68LTX Cobra 29LTD Cobra 25 L29-3 L25-3 RCI8719 MB8719 PLL 02A 28.045 MHz 25.615 MHz 25.625 MHz 25.635 MHz 25.645 MHz 25.655 MHz 25.665 MHz 25.675 MHz 26.935 FM 27.995 MHz 27.97125 MHz 27.60125 27.61125 MHz 27.785 MHz 27.780 MHz 27.78125 MHz 27.98125 27.600 MHz 25.685 MHz 25.695 MHz best CB antenna Uniden 538W Uniden PRO538HHFM PRO401HH TRC-224 RadioShack CB radio walkie talkie TRC-241 TRC-240 CB radio 10 weather channels

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