Folks
for whom may be interested I have upload to this link
https://youtu.be/9PdxDnvDlNU
a short video about my kind of interference.
The peak you can see on panadapter is the real 2H qrg, all the rest is
trash.
As you can notice I do switch between 2 different antennas and the
interfernce shown do not change at all.
This make me suspect it is not received by outside antennas but generated
inside the shack or house.
I have not started to make any change yet as you suggested but be sure I
will post here updated situation time by time as I see it is a very common
problem.
TNX
**** Luca IK2NCJ ****
2017-09-26 2:43 GMT+02:00 Gary <gary_mayfield@hotmail.com>:
> Check out the numbers for these guys!
>
> https://apache-labs.com/
>
>
> These are the cleanest transmitters I have seen.
>
>
> 73,
>
> Joe kk0sd
>
> ________________________________
> From: RFI <rfi-bounces@contesting.com> on behalf of Kenneth G. Gordon <
> kgordon2006@frontier.com>
> Sent: Monday, September 25, 2017 1:42 PM
> To: rfI@contesting.com
> Subject: Re: [RFI] SO2R and 2nd harmonic
>
> Excuse me, but I firmly believe that there is one very important factor
> involved here which,
> at least so far, no one has mentioned.
>
> And that is the horrendous amount of broad-band noise almost all modern
> transceivers
> output. The only modern transceiver I know of in which this issue has been
> addressed
> directly by the designers and dealt with properly is the Elecraft K-2 and
> its cousins.
>
> A recent study on this issue by, I believe, a German ham, proved
> conclusively that ALL
> other modern transceivers output a terrible amount of broadband noise, and
> any "good"
> linear amp will make this problem far worse.
>
> I will attempt to find that study and post a link to it here as soon as I
> can.
>
> I believe he showed that this noise output significantly raises the noise
> floor, even far from
> the location of the transmitter itself.
>
> Perhaps this is an important factor in this so-called "RF flooding" issue.
> At any rate, I
> believe it should be investigated.
>
> Ken W7EKB
>
> ---
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