[Johnson] Viking II numbers

telegrapher at att.net telegrapher at att.net
Wed Mar 14 17:49:19 EST 2007


I have a really nice Viking II that i put new finals in the other day to 
see if it helped any.  I get about 100W out of it on CW with it loaded 
to 200 mc of Ip.  As the manual i have is not complete and doesn't tell 
me what the proper conditions are Ip wise for CW and Phone, i'm thinking 
that this is about right.  But, a friend of mine over in California says 
his CD says to run it to 300 ma Ip for CW.  I thought that was high? 
But again if i load mine up to 300 Ma Ip i get 135W out of it as 
measured with the Bird wattmeter and a 250W slug.  Turning the inputs 
and outputs around makes no difference so i have to think the slug is 
correct.  My question is what is the correct Ip for Cw and Phone on the 
Viking II.

I remember a couple of years back an article published in ER magazine 
stated something like only run it at about 85W or so on phone because 
the mod transformer wouldn't modulate the carrier properly if you run it 
at higher power.  I've done no mods to this unit other than replace the 
Electrolytics.  I think the idling Ip for the modulator is 65-75 ma.  Is 
this correct.  I'd really like to find a complete manual for this unit 
as it's at least a 9 or better cosmetically and is fun to operate.  Read 
lots of knobs to twist and turn!!!

Larry
W0OGH


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