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I agree ?with Peter. ?In fact, I use my MN-2000 for 40 meter operation but use my MN-2700 for all other ?bands due to ?the wide matching range. ?Once you find the sweet spot for each band, logging the settings (including the extra capacity lever switch controls) makes tune up very easy.
73,
Evan, K9SQG -----Original Message-----
From: VE7PS <ve7ps@...> To: [email protected] Sent: Sun, Mar 21, 2021 11:34 am Subject: Re: [DRAKE-RADIO] MN2000
Billy:
Indeed, the MN-2700 might be a better choice for 160m than trying to convert an MN-2000.? 160M coverage is already built into the 2700. It won't quite match your 4-line for sure.....but there's your excuse to add a 7-line to the shack, if not there now! 73 Peter VE7PS On 2021-03-21 8:12 a.m., Mike Davidsohn
G3ZCC wrote:
Hi Billy
I would think it near impossible to add 160 to the MN 2000.
It looks like a high Q circuit and I read somewhere that it
performs best when using antennas of near resonance and is
tetchy on 80m.
As has been said, you would have to add inductance, probably to
the 80m section of the coil and also parallel capacitance as a
minimum.
Look at the tuning capacitors in the schematic, way too small
for Topband.
You would have to fit some kind of switch, not a good idea imo. Simplest thing is to to put up a Topband quarter wave antenna
and use the MN 2000 in direct mode.
Better still make a separate ATU for Topband and paint the case
the same colour as the MN 2000.
How about one of the MFJ Autotuners?
Back in the 60's when I got licensed, we were limited to ten watts , I used a 132 ft long wire with an ATU, in those days built on wood. Topband can be very forgiving, I have worked over 200 countries
now and also a member of the Topband Hall of Fame.? ??
It is my favourite band my first DX was Stew W1BB and Ralph
W1HGT, that really whetted my appetite.
Good luck with it Billy , hope you sort something out.
?Kind Regards
Mike
G3ZCC |
