[Heathkit] TT-1 TUBE TESTER

Sat, 06 Sep 2003 06:58:12 +0000

   I wonder if someone `fixed' to to show `not new' tubes as very bad
tube to increase sales?

>        Question about the filament/heater voltages. 
>  I have a TT-1-A  that seems to have a grave discepancy as to actual at
> socket fil voltage. 
>  for instance,  when setting the line adjust to line set and fil sw to 6
> v it will show about 
> 6 v or less at tube socket, no tube inserted. plug in tube and voltage
> drops to 4.3 and 
> re-adjusting the line set control may bring it up 
> to about 4.7v.
>         The odd thing about this is that a 6L6 will test as good with
> this heater voltage, 
> I measured this with a socket adapter with the terminals at the side.
> I do not have the complete manual which may indicate the point to measure
> the 100 volts 
> neccesary at the primary for proper operation. 
>   what gives???

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