[Premium-Rx] HP 608F

[Al Klase]

Victor,

I'm buy no means an expert, but owned one many years ago.  I checked and 
found a manual with schematics and such on the HP archive site.  However 
the fold-out schematics were cut up into letter size pages.  I freaked 
out and exported the pages from Acrobat as png's.  I stitched these 
together using Image Composite Editor, a really helpful freebee from 
Microsoft, and then stuck them back in the pdf at the end of the 
schematic s section.  You can grab the file here:
http://www.ar88.net/pix/HP-608E-608F-Manual%20stiched%20schematics.pdf
Like I said, I freaked out. :-)

I'd start by checking the power supply voltages.  The you'll have to 
penetrate the heavily shielded RF stages.  In a lot of shops these 
things were left on all day, every day, in the interest of stability, so 
you may be looking at weak tubes.  They are exotic planar triodes, so 
they're hard to test.  You can by new ones for about $30 each.  Best bet 
might be to find another 608.  There were a lot of them around, and they 
generally go begging at hamfests.

Good luck,
Al

On 7/14/2019 4:43 PM, Bingville Canoe and Boatworks wrote:
> Does anyone on Premium Rx use or is familiar the subject signal gen?  I have one that only makes a signal on the lowest band and I need some ideas as to where to start to look for the problem. I have an electronic ops manual but no service manual.
>
> Victor
>
> "Who is John Galt"?
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-- 
Al Klase – N3FRQ
Jersey City, NJ
http://www.skywaves.ar88.net/