[Elecraft] XV50, XV144, XV222 Assembly Manual

[David Pratt]

Many thanks to all who replied to my query about the vent holes in the 
top cover of the XV144. There weren't any on mine, so I drilled some 
over the Metox resistors in the RF power attenuator (R20, R21, R26, 
R27).

With particular thanks to Johnny VR2XMC, I have now completed my mods to 
the XV144 by adding a fan, similar to that used in the XV432 and 
drilling vent holes in the base plate.

Although I am only driving the XV144 with 1mW from either the K2 or K3, 
heating of the resistors was not a problem, but hot air is now coming 
out of the top vent holes when I am transmitting.

Hopefully, the mods will enable the XV144 PA module to run cooler and it 
will not shut down after I have been transmitting for more than a few 
minutes.

73
-- 
David G4DMP
Leeds, England, UK
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