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KG6BAJ > NWSGRP 16.08.09 18:20l 31 Lines 1314 Bytes #999 (0) @ WW
BID : 9964_N1OES
Read: GUEST
Subj: Re: MFJ-269 Antenna Analyzer experience
Path: DB0FHN<DB0MRW<DK0WUE<DB0RES<IK2XDE<ON4HU<PY4WVZ<CX2SA<N9ZZK<KG6BAJ<
KG6BAJ
Sent: 090816/0800Z @:KG6BAJ.#NCA.CA.USA.NOAM #:9964 [Grass Valley] InterGate $:
** NEWSGROUP: rec.radio.amateur.antenna
** FROM : Roy Lewallen <w7el@eznec.com>
Peter wrote:
> Hi all
>
> I'm looking at purchasing an MFJ269 antenna analyser and keen to hear
> experience of others in this group regarding this or similar analysers.
> Appears to be ideal if it is as good as MFJ claim.
I have one and find it extremely handy for a variety of tasks such as
measuring the length or velocity factor of coax lines or the impedance
of ferrite cores. But ironically, the one thing it's almost completely
useless for, at my QTH, is analyzing antennas. Induced fields from TV,
FM, and AM broadcast stations are so high that the MFJ isn't able to
detect its own signal. This isn't unique to the MFJ -- I've had the same
problem with a very expensive HP digital impedance meter, and revert to
my old GR bridge with a tuned receiver for a detector when I want to
actually measure an antenna's impedance. For me the MFJ is worthwhile
just for the other functions it provides, but it might or might not be
for you. Just keep in mind that, depending on your QTH, it might not be
able to actually measure antenna impedances.
Roy Lewallen, W7EL
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