Tuner Options

[John Chance-Read]

I have the K2 ATU fitted.  At the time I suffered from a lot of unwanted output signal. As a result the ATU jitters about before findin the tune spot. I bought an Orion and its ATU which had similar problems as above. I moved the shack so that the end of the dipole points directly to it.  I also had a MFJ 929C it was a bit of a pain to tune but it did work.  I now have a MFJ 933B and I think it is a great.
The 933B tunes all freq on my 70 degree 80m Off Centre dipole using a 9:1 balun (except 160m of course). The balun present a broad 3:1 vswr from 80 - 10m with most Ham bands down to 1.5 : 1.    It remembers previous tuning but does need the odd operation of the Tune button occaisonally to improve down to 1 : 1.    It doesn't like slow CW at the higher power level (300w) though.
I would recommend it against the alternatives Auto ATU at that price level.
John G4BOU
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[R Thompson]

Hi John,

    I was looking for a tuner that could be adapted for use at the
antenna end.  Recently I purchased an LDG Z-11ProII, but I haven't tried
it yet.  There is information on the LDG website on a modification to
install an internal battery pack for remote use.  After it arrived I
opened it up to see how a battery pack might be installed.  At the same
time I looked over the front pushbutton PC board and I think that by
using opto-isolators it may be possible to run a multi-conductor cable
to a remote control panel.  It would be nice to have a remote panel and
be able to manually tune it while on receive.

    It will be a while before I attempt this, maybe after the warranty
has expired :-)

             Ron VE8RT

On Mon, 2012-02-20 at 11:04 +0000, John Chance-Read wrote:

> I have the K2 ATU fitted.  At the time I suffered from a lot of unwanted output signal. As a result the ATU jitters about before findin the tune spot. I bought an Orion and its ATU which had similar problems as above. I moved the shack so that the end of the dipole points directly to it.  I also had a MFJ 929C it was a bit of a pain to tune but it did work.  I now have a MFJ 933B and I think it is a great.
> The 933B tunes all freq on my 70 degree 80m Off Centre dipole using a 9:1 balun (except 160m of course). The balun present a broad 3:1 vswr from 80 - 10m with most Ham bands down to 1.5 : 1.    It remembers previous tuning but does need the odd operation of the Tune button occaisonally to improve down to 1 : 1.    It doesn't like slow CW at the higher power level (300w) though.
> I would recommend it against the alternatives Auto ATU at that price level.
> John G4BOU
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html

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