How to setup a Midland 77-285 CB radio - Midland Radio Communications

SOURCE: midland 75-785

Given the fact that when you key up the mic you should not hear any thing because the receiver section is "turned off" (no antenna and the speaker is muted). This would seem to indicate that the switch the headset controls which allow the change over from RX to Tx is bad or that the circuit in the CB unit which the head set plugs into is having a problem. Do you hear the same flutter without the headset? Try to get another headset or test one out just to see if the problem is eliminated by using a known good headset.

SOURCE: 75-822 midland radio

You have a bad detector in the radio. Needs serviced. Change the bad detector diode and it should work. Good Luck
Ed
NC Electronic
Mills, Wyoming

SOURCE: midland cb model 13-895

Hi Frank, It sounds to me like you may have a bad dectector diode. Other possibilities are cold solder joints in the stand up boards in the IF section. Good Luck
Ed
NC Electronic
Mills, Wyoming

Mechanic688

• 204 Answers
• Posted on Mar 08, 2008

SOURCE: look for schematics for a midland cb

daniel, first off, I need a complete model number for the radio info. Midland only made about 40-50 different models over the years. The header calls for a 75-822 and you are asking for a ** 833. The beginning should be a 13 or 75,76,77,78. Let me know the # and i'll be able to get you the proper pinout.
Thanks,,, Mechanic

SOURCE: wiring a midland 78/999 cb radio microphone

Pin 1 = white
Pin 2 = shield
Pin 3 = black
Pin 4 = red