[Hallicrafters] Check Those Tubes

[Mark Bell]

I had to chuckle at Bill K2WH's saga of the SX-111 wherein he found the
culprit to be a bad tube.

Similar saga here last week.   My DX-100B popped the modulator current
sensing resistor when I turned on the plate switch in PHONE mode.   I
replaced the resistor, flipped the switch and it seemed to work, but as soon
as I applied audio, "pop" went the resistor again.

Hmmmm.    A friend stopped over last week, and I was lamenting about the
DX-100B, and he asked if I had tested the tubes.   Well, as a matter of fact
I had, a few months ago   All were OK.  He said why not test them again?

I did, and found a VERY leaky 1625 modulator tube.  With that replaced, it
was AM fun during my week off!

73 Mark K3MSB