Noticed a couple of comments concerning bulbs in radio equipment. I have a
30S-1 Collins amplifier and for a long time, I kept blowing out the dial and
two meters on the 30S-1 front panel. If one remembers, these Collins radios
were designed around 110 volts. In todays society radios are coming out with
120 volts. Anyway, I changed all the pilot bulbs in my Collins from the #47 to
#51 bulb which is 7.5 volts. The higher voltage to my amplifier pushes the 6
volts up just a little and bulbs are gone. Also changed the K201 step-start
relay to 115 volts inplace of the standard 1960s 110 volts. I'm sure this will
help a few people owning Collins from 50 years ago. Joel, K2QBV
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