Call Search
     

New to Ham Radio?
My Profile

Community
Articles
Forums
News
Reviews
Friends Remembered
Strays
Survey Question

Operating
Contesting
DX Cluster Spots
Propagation

Resources
Calendar
Classifieds
Ham Exams
Ham Links
List Archives
News Articles
Product Reviews
QSL Managers

Site Info
eHam Help (FAQ)
Support the site
The eHam Team
Advertising Info
Vision Statement
About eHam.net

   Home   Help Search  
Pages: [1]   Go Down
  Print  
Author Topic: Rebuilding a Clipperton L  (Read 316 times)
K9SMC
Member

Posts: 34




Ignore
« on: November 10, 2001, 08:00:26 PM »

Where is a good source for capacitors, diodes, resistors, etc to rebuild this amp?  Any good suggestions are also welcome.  Amp is intact, but was stored for 15 years, prior owner was a heavy smoker.  Need to clean amp also, any suggestions?

Steve K9SMC
Logged
N6AJR
Member

Posts: 9908




Ignore
« Reply #1 on: November 10, 2001, 08:12:20 PM »

I might suggest you locate a variac ( veriable transformer) for the 110 or 220 , its easy to switch the input voltage on the clipperton L, start at 30 volts,then 60  etc. a half hour or an hour at a time.. word has it that it helps the caps rebuild them selves and is in general good for the rig.. some folks do 6 hours each step and raise it 15 or 20 volts a step.. it can't hurt..I have one and another on the way and I really like it.. good little desk top kw.. and I picked up a 110 veriac and a 220 veriac on ebay for about $20 plus shipping..tom N6AJR
Logged
RobertKoernerExAE7G
Member

Posts: 1435




Ignore
« Reply #2 on: November 10, 2001, 08:19:32 PM »

There have been prior postings asking about getting rid of smoke gunk.  Also an article in QST a few months back.
Logged
W7DJM
Member

Posts: 1




Ignore
« Reply #3 on: November 10, 2001, 10:19:04 PM »

As old as that thing is, I would not waste my time with a variac.   WHEN  one of those caps decides to "go" later on, it could (will) make a big mess, and smell.   Just replace them, now.

Actually, you really don't need a Variac.   You can wire up a light bulb in series with the amp, to limit the current.   Start with (guess) with 40, 60w lamp and go on up to 150w or so, and let it "cook" there.

Digikey, Mouser, are at least two places that sell filter caps.   You may have trouble getting exact size replacements, but it is a simple matter to make a small perf board and mount the new caps on, which will be MUCH smaller than originals, for the same ratings.
Logged
W9GB
Member

Posts: 2623




Ignore
« Reply #4 on: November 12, 2001, 01:03:42 AM »

Steve -

Here are a few interesting pages on the Clipperton L

Tom's Tubes conversion to Russian gi7b tubes
http://www.tomstubes.com/amp-conversions/

QRO home page
http://www.nd2x.net/base-1.html

Economy Electronics
http://www.economyelectronics.com/

MGS
http://www.mgs4u.com/

That should get you started

w9gb
Logged
Pages: [1]   Go Up
  Print  
 
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.11 | SMF © 2006-2009, Simple Machines LLC Valid XHTML 1.0! Valid CSS!