hammarl-mf: hq129 too much B+
ID: 473031
This article refers to the model: HQ-129-X early (Hammarlund Mfg. Co. Inc.; New York, NY)
? hammarl-mf: hq129 too much B+
28.Jun.18 00:08
57
my 129 is running too much b+ ....340 at pin 8 5u4 versus 300 ....this causes vr tube to overwork by 50%....60 ma vs 40max
....the radio is freshly recapped and appears to be working well... i am thinking of placing a suitable resistor between 5u4 pin 8 and the choke....any ideas???...john
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hammarl-mf: hq129 too much B+
28.Jun.18 19:46
57 from 1135
nevermind...it wasa line voltage thing....123 line volts caused problem...radio now running on 114 from variac...302 volts at pin 8
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