> noise, but not corona noise? Is it because typical powerline noise is
> periodic in nature and corona is random?
Kelly, I think you are pretty close to the answer.
The noise blankers on the old GE (and Motorola) low-band
VHF radios used a separate TRF (Tuned RF) receiver to
amplify the 'noise' - and the last stage had a combo differentiator
and one-shot multivibrator that worked to literally blank
the receiver for really spikey, narrow impulse pulse-noise
sources at a 60/120 Hz rate (power line noise) or ignition
(car) pulse rate that didn't have terribly high repitition rates
I remember one particular Moto low-band 'Dispatcher'
series radio that worked particularly effective on power
line impulse noise, but not so well when the pulses got
to be numerous, as from brush-type motors; I would
say that corona is in this same vein.
Jim P // WB5WPA //
----- Original Message -----
From: "Kelly Johnson" <n6kj.kelly@gmail.com>
To: "RFI List" <rfi@contesting.com>
Sent: Friday, January 04, 2008 5:54 PM
Subject: [RFI] Corona Noise Profile?
> Why is it that noise blankers are effective against typical powerline
> noise, but not corona noise? Is it because typical powerline noise is
> periodic in nature and corona is random?
> _______________________________________________
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