[Amps] Clipperton L on AM

[Carl]

Figure on about 250W carrier on AM which is about 1000W PEP which is fine 
160-20M. Back it down on 10/15.

Keep an eye on the tubes and if they get more than a dull red back the drive 
down; 20-25W is more than sufficient.

For more efficiency switch in more bias until the idle current in SSB is 
about half, with a new quad of direct from China tubes Ive run a 300-350W 
carrier for 3-4 hours of ragchewing, no 5 minute blowhard transmissions. If 
its slow replace the fan with an EBM Papst 4600N or 4600Z. More air and less 
noise than others, you will barely hear it with the resistor used in the L.

http://www.ebmpapst.com/en/products/compact-fans/axial-compact-fans/axial_compact_fans.php

Ive been buying the 4600Z from Gopher Electronics as the best price.
http://www.gopherelectronics.com/store/pc/search-results.asp?incSale=&IDSale=&VA=1&ProdSort=&PageStyle=p&customfield=&SearchValues=&exact=&keyword=&priceFrom=&priceUntil=&idCategory=&IdSupplier=&withStock=&IDBrand=108&order=&SKU=

Carl
KM1H



----- Original Message ----- 
From: "Louis Parascondola" <gudguyham at aol.com>
To: <amps at contesting.com>
Sent: Monday, March 17, 2014 7:29 PM
Subject: [Amps] Clipperton L on AM


> I've got a Clipperton L in here that needed some repairs.  That's all done 
> now.  Customer claims he uses it on AM on 10 meters.  I want to make sure 
> he is using it correctly so there won't be further problems.  I checked 
> the manual on the Clipperton and there is no recommendation of even using 
> AM.  I assume if it can be used on RTTY it could be used on AM in some 
> capacity.  Can anyone advise as to how to safely use it on AM.  How much 
> carrier power would be safe?  Should it be run in the CW (lo voltage) or 
> SSB (hi voltage) position?  Perhaps it is not recommended at all?  Anybody 
> used one on AM that could set some guidelines?  Thanks
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