----- Original Message -----
From: "Mr. and Mrs. Magoo" <magoo@isp.ca>
To: <topband@contesting.com>
Sent: Tuesday, November 25, 2008 4:10 PM
Subject: Topband: CLIPPERTON L
> For those who may have a Dentron Clipperton L linear and contemplate
> making
> it a better performer on 160M, I recently added to and updated my web page
> on this fine little unit. Some of the material goes back to the mid-90s
> and
> originated with Tom, W8JI, Carl, KM1H, Yuri, K3BU plus a number of others
> on
> this reflector who sent me suggestions.
>
> >
> 73, Bill VE3CSK/VE3NH
Inspired by this work of others I rehabilitated a nice Clipperton L a few
years back, adding many of the tips offered. (and a few of my own) I
completely re-wound a new set of tank coils from #6 and #12 copper. Silver
plated all of it for whatever efficiency it would add. Re-worked the tank
taps with copper strap I sheared from some wide copper grounding sheet.
Silver plated all that as well. An Ameritron AL-572 Plate Choke for good
measure topped with their parasitic suppression board and ceramic plate
caps. Added the LDG raw tuner board, that was featured in an article I read
a few years back as well, as a tuned input for the amp so it would play well
with my FT-1000D. The board fit nicely in the power supply compartment of
the "L". Re-capped the HV supply with screw terminal modern caps.
End result is a nice amp that keeps the input match proper for the solid
state rigs and gives me 1KW indicated out in the CW position on all bands
with no more than 120W drive...160M included. (I never use the SSB position)
Amp has, what appears to be, original US made tubes.
Nice amp for well under 1K.
Next project is another Clipperton L for a 6 meter conversion...once I find
an unsuspecting candidate.
Happy Thanksgiving everyone!
Cecil Acuff
K5DL
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