I am looking for a replacement antenna for a Midland 75-810. The original male end broke from a drop and I want to replace it because if affects transmitting. Do you know where to find one or of a substitute?
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your problem has many fixes depending on how you use your radio, but first think of were you are transmitting from a van or car is literally a big metal box so the squelch minimum will increase a bit if your antenna is inside the van. but if you use/get the UHF-DC adapter for this radio it will alow you to mount a exturnal antenna on the outside of the van, the other possibility is a bad placement of the antenna try changing its location. however if the noise increases as you excelarate then you might need a in line DC Noise Filter.
This could be several things, first I'd look at your antenna system,make sure its matched to your truck. When I say this you need a good ground good coax at least 18 foot,the mount and it installed right and the right kind of antenna, they make many different one because not all work on what you're installing it on. Then I'd check your mic if it has a broke wire it can also cause the problem you're having, most midland mics are wired different so don't just find another one.
Try asking any onrt CB'ers if they can hear you at all.
Could be 2 things -
#1 - you are really too close.
#2 - you've blown the output stage of your rig by keying the mic without an aerial fitted.
- This is very common, and most repair centres are used to dealing with this.
If you are up to electronic repair, it's possible to DIY repair.
Could also be an antenna mismatch or fault.
Make sure you run the CB directly to the battery. What you are hearing is the alternator whining. Even then sometimes a low pass filter may be necessary. Make sure the chassis of your CB is grounded with a copper braid strap too.
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.