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Noisefloor Flex 6400M

Hi all

I have a Flex 6400M that is just a couple of months old, and I just started using it with my new antenna. After a couple of weeks I was starting to suspect that the noise level was to high. On 17m I have a 4-5 s-units noise floor, right now S4 (appx -118 db). The thing is, even without an antenna connected, I have this level, -120 db to be precise, still say S4 on the meter.
Question: Is this normal?
I have switched of all circuits in the house, run the rig on battery, same story.
No antenna.... 4 s-units, hmmm.

Any comments?

73 de Tom, LA9GX


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