[Drake] MN-4C

[Ian]

Larry,

If you don't have a very readable manual and you want the complete manual
and schematic download it from:

<http://bama.edebris.com/manuals/drake/mn4c/>

You will have to install the Lizartech djvu software that integrates with
your web browser.

I would follow the directions for installing the balun and get into the unit
and see if it's there or not.  Those terminals are there but require the
balun.  You may have nothing connected inside or perhaps the balun was put
in improperly.

Ian, K6SDE

> >>-----Original Message-----
> >>From: drake-bounces at mailman.qth.net
[mailto:drake-bounces at mailman.qth.net] On
> >>Behalf Of telegrapher at att.net
> >>Sent: Saturday, November 03, 2007 9:18 AM
> >>To: Drake at mailman.qth.net
> >>Subject: [Drake] MN-4C
> >>
> >>I purchased a Drake MN-4c, beautiful condition cause i needed an
> >>additional antenna tuner and i thought this one was reasonable and
> >>capable of doing the job i needed it to do.
> >>
> >>The manual that came with it was a photocopy, ok.  I got to reading it
> >>and they talk about using a B-1000 balun with open wire feeders although
> >>it has the connections on the back of it for balanced wire feeders.
> >>However it doesn't seem to be able to tune the line as well as i would
> >>have expected it to.  The "Resistive tuning" control has very little if
> >>any effect when it's adjusted.  The antenna is a "sort of" 80 meter
> >>dipole, length wise anyway but it's doesn't really have the height it
> >>should have (read 15')!
> >>
> >>My question is, does the B-1000 actually come with the MN-4C or was it
> >>an externally attached unit?  I doubt they are available anyplace
> >>anymore unless you happen to discover one that isn't toasted or
> >>otherwise made useless from the auction place.
> >>
> >>There was no schematic nor pictures (ahhh yes, pictures) with the manual
> >>so i'm not sure just what i'm looking for on this.  I would think for
> >>open wire you would need a 9:1 balun so the question is, would any other
> >>  9:1 balun work in it's place, is it really inside the tuner or do i
> >>need to find the B-1000 Drake unit?  I've not taken it apart, no reason
> >>to until maybe now.
> >>
> >>Larry
> >>W0OGH