[Heathkit] SB-102

[revcom at wbsnet.org]

Dan

The HP23A here on bench just tested, NO load measures
with 122.8V applied:

7.1V at 6V at socket
14.2V at 12V
824V at HV
278V at LV
-133V on bias (adjustable)

You need to measure filament from 'Fil comm' to output taps and
from 'Gnd' for other voltages.
Is it wired correctly?
73
Rod
KØEQH


> To add to Drew's suggestions it sounds like you are measuring the filament
> voltage for the supply not connected to the radio.  If so the filament
> voltage will be very high under no load, it will drop to normal when
> connected to the transceiver.
>
> Rodger WQ9E
>
>
>> Daniel Yoder wrote:
>>
>> "I just got my Tech ticket a few weeks ago and own a SB-102. I want to
>> see if I can fire this up soon. I am in the middle of rebuilding the
>> HP-23A
>> and I want to get on 10 meters SSB.
>> I have another HP-23A that I have been cooking with my variac. At 70 VAC
>> input to the primaries I am getting close to 590 HV 220 LV and the 12
>> vac
>> is reading 22 and the 6 vac is reading 14, why is this AC so high?"
>>
>
>
>