This is not just about the phone, I guess I used the phone as one
example, but I was most concerned whether
an all tube rig would create more RFI problems overall than a solid
state rig.

Thanks......Gil


More than that, the meters were often screened, and the AC line
cords had RF filters as well. This was mostly to reduce harmonic
radiation from the cabinet, which could be carried "common mode"
on the outside of the coaxial shield, or on the power cord.


Phone interference is overload related, and has nothing to do
with the quality of the transmitted signal. The phone is overly
sensitive to strong RF fields, regardless of their spectral
purity. As Chuck noted: some simple filters on the phone line
should help the problem.


Pete