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Have rf 4900 radio. Am fm work. Sw squeeks on stations. Help

Customer Question

Have rf 4900 radio.
Am fm work.
Sw squeeks on stations.
Help me
Submitted: 6 months ago.
Category: Consumer Electronics
Customer: replied 6 months ago.
Panasonic radio vintage model
Customer: replied 6 months ago.
Posted by JustAnswer at customer's request) Hello. I would like to request the following Expert Service(s) from you: Live Phone Call. Let me know if you need more information, or send me the service offer(s) so we can proceed.
Expert:  Russell H. replied 6 months ago.

Hi, thank you for contacting My name is Russell. I will do my best to provide the right answer to your question.

Does the squeaking happen only when stations are tuned in?

I presume it only happens with Shortwave... if you can get other bands, does it happen with other bands' stations?

And if so, does it squeak 'with' the sounds, or independent of them or continuously?

Please describe the problem a little more.

Customer: replied 6 months ago.
Squeaks on stations
Expert:  Russell H. replied 6 months ago.

(I regret that I am not able to offer Live Phone Call service at this time; However, your request is still open to other Experts in this category, and one of them may pick up on it at any time.)

Expert:  Russell H. replied 6 months ago.

Try turning up the gain, then cup your hand over the microphone, and key the microphone.

Does the squeal sound, at this point?