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Old 19th Aug 2019, 8:10 pm   #6
rambo1152's Avatar
Join Date: May 2010
Location: Manchester, UK.
Posts: 1,857
Default Re: Spitfire Am Transmitter Hum (Buzz)

Modulation hum is a phenomenon of mains operated receivers, and can be particularly noticeable on a local strong signal.
Hum modulated onto the carrier of your transmitter is not "modulation hum" in this context.

What you haven't told us, is whether or not you have tried a battery operated radio with your transmitter.

Originally Posted by Mikey405 View Post
I wonder why this device is so sensitive to hum relative to the SSTRAN. Hmm.
One possible reason is that the Spitfire puts out a stronger signal than the SSTRAN. Modulation hum tends to exhibit itself on strong signals.

Last edited by rambo1152; 19th Aug 2019 at 8:17 pm.
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