Re: Hilltopper mod performance
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If you've already got enough audio, you're done- the replacement IC is the 'biggie'
On Fri, Apr 12, 2019 at 7:49 AM Charles W. Powell via Groups.Io <firstname.lastname@example.org> wrote:
I replaced the audio chip in one of my Hilltoppers last night and hooked it to the signal generator. -73 dBm - great! -107 dBm, still great. Then for the more difficult tests. -33 dBm used to send the radio into its howling squeal. I turned down the gain at -33 dBm and slowly turned up the RF gain. So far, so good; no squeal. So rinse and repeat at 0 dBm. With the gain at full I couldn't leave the ear buds in place, but no squeal. Next test: full RF gain with a sudden signal at 0 dBm. NO SQUEAL. Now I have to admit that I need to change out the RC combination, but I still don't expect any significant changes in performance.