From: "Rocco Lardiere" 
Subject: Fw: [drakelist] 4-NB Noise Blanker


"Rocco Lardiere"  made an utterence
to the drakelist gang
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Gents:

I have been reading the glowing reports on the Drake blanker on the list.  I
have several in my Drakes, and they do work well.  However, my advice to
N7IOH was to try to find another solution (see below).  I like to be able to
fine tune the phasing and amplitude of the inverted "blanking"
pulses, and I
can do that with the JPS ANC-4.  Most people who try one won't go back -
they do NOT introduce cross-modulation on the bands if operated correctly
(no more fuzziness).  They are rated at 150 W PEP (watch out if you run more
than that through them) and switch RX/TX automatically.  For best results,
you can locate a "noise sniffer" antenna externally.  Oh - one more thing -
you can run multiple Drake stations through one of these boxes.  It's a
cheap solution that really, really cuts down on those pesky local noise
sources.  At the moment, mine is knocking down an S9 buzz on 40 to S1.

MFJ now sells a similar unit, the MFJ-1026.  I have not tried one of these,
but it appears to have the same manual phasing and gain controls as the JPS.

Just my humble opinion.

73,

Rocco N6KN
----- Original Message ----- 
From: "Rocco Lardiere" 
To: "n7ioh" 
Sent: Sunday, November 14, 2004 2:00 AM
Subject: Re: [drakelist] 4-NB Noise Blanker


> Al,
>
> You will get all kinds of responses to your question.  The blanker will
work
> pretty well - for a blanker.  If you really want to get rid of noise such
as
> local power line noise, you will do MUCH better with an external
"phasing"
> nuller, such as the JPS ANC-4.  Those work like the old Collins phasing
> blankers, except they are more adjustable and a lot easier to find.  You
> just put them in line with the receiver or transceiver, apply an external
> antenna (can be a whip), and fiddle with the controls.  The noise is
removed
> by phase nulling it out using manual controls for gain and phase.  Much
> better than any blanker.
>
> I use mine on a regular basis to get rid of the power line noise and other
> stuff around here.  You can buy a similar unit from MFJ, since the JPS
unit
> is no longer in production (but you can find them used).
>
> Just my humble opinion.
>
> 73,
>
> Rocco N6KN
> ----- 


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