[Boatanchors] Gonset G76

[Robert Nickels]

Jack Antonio wrote:
> Went to a nice swap meet in Sacramento(actually Lincoln) today,
> and A G76 wound up coming home with me.
Terrific find for the price Jack!   They work great and as you probably 
know, are the really the only commercial multiband AM transceiver made.
>
>
> But I have some questions....
>
> 1. The modulation transformer is missing. Is this a special Gonset part,
> or is there a cross reference to a standard part number?
I suspect it may have been custom, only based on the small footprint of 
the original.  However since it's on the rear edge of the chassis, if 
nothing else you might be able to rig up a larger transformer and mount 
it on the rear panel if nothing else.  Hopefully someone will be more 
helpful.
>
> 2. The final is a 6DQ5. I seem to recall that some makers tubes work
> better for RF than others, is there a preferred maker for 6DQ5s for RF 
> work?
I think all work equally well at RF but be advised that RCA made a 
"running change" (i.e. different electrically but no change in marking 
designation) when they introduced the "dark heater" version of the 6DQ5 
that draws less filament current.    Since the G-76 filaments are wired 
in series-parallel, you'll want to make sure you use the correct 
(original) type tube (2.5A filament) or your filament voltages will be 
all messed up!
>
> 3. What was the original color for the case? Thiz one has obviously been
> repainted.
A fairly dark gray, somewhat metallic.  Many of us have stripped and 
repained the bezel too, and you can bead-blast the metal knobs to make 
them look just like new.

Now my mystery question:  Why does the G-76 schematic show V3, the 6DQ5 
final tube, to be type 676G?   Some draftsman trying to be cute?

73, Bob W9RAN