11-14-2015, 06:39 PM
I tried replacing the resistor with a choke The smallest thing I had was the original audio output transformer from this set. I had replaced the original speaker/transformer assembly with one from a model 46-250. That didn't change the hum, but I may be on the wrong track. I need to learn something about hums. The only time I was successful in subduing a hum was a Philco Model 87, which had a hum adjuster on the upper chassis.
This hum starts almost the instant the power is on--no lag for warm-up--and it's unaffected by the volume control.
Regarding the K3KU mystery, I assumed that in code it would show some symmetry or pattern. Maybe it has some meaning backwards. I'll send it over to the NSA Cryptography Institute.
- Henry --I won't tell you how old I am, but we are three brothers, less than 3 years apart, and I'm the baby. Art was the smart one.
This hum starts almost the instant the power is on--no lag for warm-up--and it's unaffected by the volume control.
Regarding the K3KU mystery, I assumed that in code it would show some symmetry or pattern. Maybe it has some meaning backwards. I'll send it over to the NSA Cryptography Institute.
- Henry --I won't tell you how old I am, but we are three brothers, less than 3 years apart, and I'm the baby. Art was the smart one.
![[-]](https://philcoradio.com/phorum/images/bootbb/collapse.png "[-]")
