[1000mp] Mark-V and noise phasing filter (MFJ-1026, etc.)

[D. J.]

I got them both and tend to like the TimeWave ANC-4 better.  The 1026  
works good but I needed to have a longer sense antenna and it seemed  
to like the impedance to be close to 50 ohm.  With the ANC-4 I just  
stuck a 12 foot piece of wire fed with some shielded stuff which was  
not even 50 ohm coax and it picked the noise up super good.  They  
both operate about the same as far as adjusting goes.  I've only used  
them on 80 meters.  If you intend to use them on the upper bands you  
will loose about 6 db.  As far as them taking noise out, yes it sure  
does work on one single noise.  In my case a noisy flourescent light  
fixture next door, it took the noise from s-9 to s-0 where I could  
not hear that noise any longer.   The idea has been around a long time.

Good luck
dale



On 27, Dec 2005, at 10:28, George VE3YV wrote:

> I live in the centre of the city on 4.5m (15.5') wide lot.   
> Antennas are F12 C3S on the roof (parked carefully) and trapped  
> dipole for 30/40/80.  Always have had challenges with noise sources  
> - HI.  Recent new source has pushed noise level up again -  rough  
> when now focusing on 80m for 8B DXCC.  Am considering buying a  
> MFJ-1026 (the local ham store has a sale this week) to try to kill  
> or cope with the noise.  While I've read the MFJ manual (PDF on  
> their web site), W8JI's write up on his web site, and also the  
> notes on VA3CR's web site, still left with two questions:
>
> 1.  is this worth trying out? (yes I know - it depends - looking  
> for some experience)
> 2.  will it handle the 200W out of the Mark-V?
> One note - the roofing filter did help cut down some the the crud  
> from signals modulating the noise blanker.
>
> Any suggestions, tips would be appreciated.  If answers are off  
> list, I'll post a summary.
>
> Happy New Year!  tnx  73,
>
> George  VE3YV / K8HI
>
>
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