Cherokee CBS-500 (40 Channels) 2-Way Radio "type mismatch" Questions

...station recieving signal complaint ofsqeel in my transmission. Check your antenna connections. This type of feedback is many times caused by a bad connection or an antenna which is mismatched to the ...

...mismatch. maybe your RX/TX frequencies are wrong for this channel?3- If you have checked all the above, maybe your radio have a bad ceramic filter and your unit has lost it's sensibility. ...