[Moon-net] Amplifier technical questions

Kim Liljekrans oz5iq at privat.dk
Sat Feb 10 09:13:34 CST 2007


HI Oeene

And more - these tubes seems to be rather temperature UNstable, so  be 
certain, they plenty of AIR.
Otherwise, you will have to "track"  the full Po level, during transmission.

And keep in mind, that the looser you couble to the tank, the higher you 
will get to the unloaded Q !

To get an idea of the loaded Q, try to let it get warmed up, (lower the 
bias) or IDling a while,
AND  IF the PA needs to retune, your blower is eigher to small (cant resist 
the counterpressure)
or U can ADD an extra blower to help "pulling out the hot air" this might 
help cooling the anodeline in general.

IF you have used cobber as a line, change it to Brass.


GL with ur PA.



VY 73 de  OZ5IQ, Kim




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