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caymann · 09-27-2011, 08:20 PM

Hi Doc
Thanks for the reply.
Curious on what icom radio are you using?
How long is the coax feeding radio and the antenna?
The coax is likely unbalanced and hence radiating due to common mode current.
You could use a balun at the feedpoint, if not already using one.
If the tuner is at the antenna base then a balun is not needed.
Doing so, you may be able to increase your SNR on the radio end and hear
weaker signals and keep RFI out.

I am not sure if the antenna ground should be connected to the MH frame, which is why i put debatable in my post. Generally speaking, a counterpoise needs to be below the antenna, not to the side of it. So now the other half of the antenna is the MH frame and all kinds of RF is flowing through it. At least that is what i am thinking.

09-27-2011, 08:20 PM	#3
caymann Junior Member Join Date: Apr 2011 Location: Bedford, NH Posts: 8	Hi Doc Thanks for the reply. Curious on what icom radio are you using? How long is the coax feeding radio and the antenna? The coax is likely unbalanced and hence radiating due to common mode current. You could use a balun at the feedpoint, if not already using one. If the tuner is at the antenna base then a balun is not needed. Doing so, you may be able to increase your SNR on the radio end and hear weaker signals and keep RFI out. I am not sure if the antenna ground should be connected to the MH frame, which is why i put debatable in my post. Generally speaking, a counterpoise needs to be below the antenna, not to the side of it. So now the other half of the antenna is the MH frame and all kinds of RF is flowing through it. At least that is what i am thinking.