[OKDXA] Radios and noise

[Rick]

John
Even with an expensive radio, the noise blanker
can only do so much.  My experience is that
"ONLY SO MUCH" is NOT/NEVER enough
to do any good.
Or, noise blankers are good on paper,
but not very useful in practice..
The noise source must be found and fixed.
I had a horrible one for a year.  Recently.
S9 and 10 over at times.
I finally found it about 1/2 to 3/4 mile away.
The power company came out and said, OH
it is a broken lightning arrestor that is arcing.
And proceeded to smash it so that it didn't arc anymore.
Problem solved.
I have a 3 element bean and receiver combo for noise
tracking.  Your welcome to try it out.
Let me know if your interested in trying it.
Rick K9KK
P.S.  Had a similar experience about 9 years ago.
They came out and smashed that lightning arrestor also.



On 1/23/2017 7:07 PM, John Geiger wrote:
> I know if you buy a more expensive radio, you get a receiver that (usually)
> has better dynamic range and handles QRM conditions better, generating less
> IMD products and blocking when the band gets full of signals.  Does the
> same hold true for QRN and electrical crud?  I know that some radios have
> more tools than others, like noise reduction, notch filters, stuff like
> that.  Do more expensive receivers get less affected by RFI and other junk,
> and by atmospheric noise?
>
> Here is my situation:  I was having some bad powerline noise from a pole
> close to my house. The noise blanker in the radio I have took out the buzz,
> but I am seeing a S6 noise level on 40m SSB and on 20m SSB sometimes.  I
> figured some of that came from the line noise, so I didn't think about
> doing much until the line noise was fixed first.  Well the power company
> came and fixed it today. The buzzing is gone!  The noise level still is
> there, though.  I am using a Yaesu FT100D which has a great noise blanker,
> and does have AF DSP, but it is a cheap, mobile type HF/VHF/UHF radio.  On
> 40 meter SSB I see a S5 or S6 noise level when on SSB, and that is with the
> preamp off.  On CW it is much less because I put the 500hz CW filter in
> line.  20 meters is sometimes the same, but sometimes on SSB the noise is
> much lower, which I think is probably from urban crud. I live in an older
> neighborhood where the houses are maybe 8 feet apart, if that much. I am
> sure many neighbors have switching power supplies in all sorts of
> electronics.
>
> So, is this 40 meter noise level pretty typical for most people?  Would a
> more expensive radio like a Kenwood TS590 (which is supposed to have a
> great receiver), Yaesu FTDX1200 or Icom 7200 be less affected by these
> types of noises?  I can't afford much more than that right now,and would
> like something that is fairly small enough to still take mobile or portable
> from time to time.  I did try a yaesu FT891 which is a mobile sized radio
> and it was maybe very slightly better, but not really noticable.  A Ten Tec
> Eagle would also be small enough.
>
> Is this one of the compromises you have to live with when you get a smaller
> radio?
>
> 73 John AF5CC
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