Thanks to all ya'll! I get ALOT out of your posts above...and hope that there will be more data coming....many many thanks for your input!!!
Below is a User Review from Amazon on the BaoFang 5RM that I just stumbled on....perhaps this adds to the discussion??
(Before I leave, could there be an issue that I am using the "wrong" (fact supplied) basic antenna??)
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"1. "Reports of distorted AM aircraft band audio" - Most of these newer radios (several brands) experience some overload distortion when receiving very strong AM aircraft signals. I think another issue contributing to reports of distorted aircraft band receive stems from the fact that the wrong frequency steps are being selected. I'm using the proper 25 KHz frequency steps and it sounds good to me. When scanning with the improper frequency steps, the radio is not stopping on the correct frequency (but something close enough) which is causing the "off frequency" distortion.
2. "Reports of no AM aircraft band receive" - I have all (3) variants of this radio and they all receive aircraft band just fine. That being said, I wouldn't recommend just putting the radio into scanning mode and "hoping" it happens to land on a conversation. I recommend programming the local airports approach and departure frequencies into memory channels, then scanning those. I've have great luck using that method."