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Adding 160 meters to the National NCL-2000




 
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Author Topic: Adding 160 meters to the National NCL-2000  (Read 382 times)
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W3BH
Jim
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« on: December 15, 2020, 11:33:15 PM »

Gentlemen,

Has anybody out there managed to modify the NCL-2000 to cover 160 meters. Is it feasible. Advice and comments would be most welcome.

Many thanks,

Jim
W3BH

Brookline, NH 03033
w3bh.com
kjsorenson@gmail.com


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KD6VXI
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« Reply #1 on: December 17, 2020, 09:58:30 PM »

Seems like an abortion to a good amp.  You'll need a new bandswitch as well as associated circuitry

I bought a viewatar 2500 that is a 160 to 10 amp for 600 bucks.  A new ceramic bandswitch h is almost a third of that.

--Shane
KD6VXI
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Opcom
Patrick J. / KD5OEI
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« Reply #2 on: December 18, 2020, 12:09:33 AM »

I'd never booger up my NCL2000 in that way. Too good of an amp to do such experiments in. Anyway, there isn't much room inside, so where would the large coil go, or even a toroid? Tuning caps big enough? and I mean the loading cap too. I think it's a bad idea.
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W3BH
Jim
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« Reply #3 on: December 18, 2020, 11:04:13 AM »

Thanks Opcom and KD6VXI,

I can't argue with you. There is insufficient space inside the 2000 for any modifications and I hate soldering rotary switches. I have a number of new in the box vintage Mallory rotary switches from a ham fest and one of them would do the job if I could actually trust the contacts to hold up. I was just asking in case someone out there has performed a miracle. It does not appear so and performing an unnecessary surgery on any National product is probably just wrong. I have an HRO-60, NC-303, NC-98 (my first receiver) and have owned many other National products over the years. The NCL-2000 is a very handsome and beautifully designed linear and its going to stay that way here. My bad for even thinking of such mods.

Plan B is to use a pair of 813s for a modest single band amp for 160 and I have all the parts necessary to do so. I won't have to solder a bandswitch either.

Thanks,
Jim
W3BH





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