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crackle · 12th Jul 2018, 10:23 am

Reception was not quite so good with the mains earth removed and just the RF earth connected. However with the mains earth connected, connecting the RF earth does "clean" up the signal a little, less background noise etc.
I have not noticed this so much on other radios designed for long wire and earth.
There is a RF choke across the aerial and earth terminals, is this an IF trap or something else.

Mike

12th Jul 2018, 10:23 am	#13
crackle Rest in Peace Join Date: Mar 2011 Location: Basildon, Essex, UK. Posts: 4,100	Re: KB ER30 radio Reception was not quite so good with the mains earth removed and just the RF earth connected. However with the mains earth connected, connecting the RF earth does "clean" up the signal a little, less background noise etc. I have not noticed this so much on other radios designed for long wire and earth. There is a RF choke across the aerial and earth terminals, is this an IF trap or something else. Mike