Friday, October 22, 2010

RFI issues any ideas....

As I mentioned in a previous post I had some QRN and now think it is some type of RFI. Here is what I have done up to this point.

1.The RFI is on all bands at the same S unit and it is across the whole band just not a segment. I could view this with my PowerSDR software. The whole noise floor would rise and fall in sync with the RFI pattern.

2.When I connected to the Dummy load the RFI was no longer present.

3.With the center pin of the PL-259 only connected to rig RFI was present on all bands again.

4.With PL-259 disconnected from radio RFI was gone.

Below is a recording I did not 20 meters the other day have a listen your feed back would greatly help. I hope to by the end of the weekend know what and were the RFI is and hopefully solve it.

3 comments:

  1. That's a very annoying interference. But what it is? It doesn't sound like PLC or Powerline interference to me. It's more like a faulty switch somewhere nearby as you can hear it on the center pin. 73, Bas

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  2. You know what Bas after posting this both on my blog and the Elecraft reflector and getting some great feedback the noise is gone!!!!! It's like going to the dentist. I am awaiting it's return most of the feedback seem to think it is a bad doorbell transformer.

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