[Drake] Drake MN-2000 160 meter mods..?

Wed, 8 May 2002 13:12:29 -0400

Disclaimer: Fools rush in where angels fear to tread...

It would not be easy to modify an MN-2000 for 160.  The pi-type circuit
does not have the range of today's t-type tuners, at least lot without
unreasonable sized components.  BTW, event though you may be able to match
anything with a modern tuner, a lot of your power may be dissipated as heat
in the inductor.

As a general rule, 160 Meter antennas are electrically small so they
present an impedance with a low resistive component and a high capacitive
component.  Usually, the best answer is in remotely switching in some
series inductance (assuming you want to use the antenna for 80 Meters).
There is a neat article from QST contained in the ARRL TIS pages on winding
your own inductors from copper refrigeration tubing.  The same inductance
can be added in the shack (before the tuner), but the price you will pay is
increased losses on the feed line due to the horrible SWR, and that's with
ladder line (don't even think of coax).  You don't need to do the complete
job, just cut the reactance back to the point where the MN-2000 can finish
the job in the 80 Meter position.

----- Original Message -----
From: "Jordan Arndt" <[email protected]>
To: "Drake" <[email protected]>; "Collins Reflector"
<[email protected]>; "boatanchors" <[email protected]>; "EF
Johnson Reflector" <[email protected]>
Sent: Wednesday, May 08, 2002 12:11 PM
Subject: [Drake] Drake MN-2000 160 meter mods..?

> Hi .. has anyone found a successful method to add 160 meter band
> coverage to the Drake MN-2000 tuner..? Something that is reversible and
> does not add a control to the front panel....?  I like my MN-2000, but
> I'd really like to use it on 160.... 73 de Jordan....