Well, I have to check in on this....
I have the MFJ 852, the RFI RX with the "dipole. The
RX, I'll bet is the same as the newer 856. The 852, was worthless
with just the dipole. Otherwise it's a simple but very effective RX!
I built the 2-el Moxon antenna that was in QST some years ago.
That, with the 852 "worked" but it too was next to worthless until I
added a homebrew ATTENUATOR. Only THEN did it become a good RFI tracker.
In my
attenuator, there are 3 DPDT switches for 6, 10 and 20db settings, for a
maximum total
of 36db. Sometimes that's NOT enough!
So, I'm saying that if the 856 has a *good* beam, by all means
DO add a attenuator (say, up to 50db or so) and you'll be ready
to track down the noise! (Hey, MFJ, are you listening?)
73,
Charlie, N0TT
On Sun, 22 Apr 2012 19:52:42 -0700 "KD7JYK DM09" <kd7jyk@earthlink.net>
writes:
> : However, the MFJ-856 has a signal-strength meter, and the 3-el
> antenna
> : boom length (with the rcvr on it) may be easier to manage/handle
> than
> : what I've been using for nearly a decade.
>
> >From my experience and the experience of three other Hams, in the
> city,
> where noise is relatively everywhere, it is useless. Readings are
> the same
> pointing at a source, the ground or the sky when tracking down power
> line
> noise. The unit we used is now on a shelf, the parts used for other
>
> projects.
>
> Out in the field where you may have only one noise source and you
> are a
> large fraction of a mile away, it might be OK.
>
> Kurt
>
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>
>
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