On Jul 30, 2:55 pm, Danny Richardson wrote:


May things you say are correct, but remember that a balun/choke does
not totally choke off (eliminate) common mode current on the
transmission line (particularly a multi-band antenna system) and a
good station ground can provide additional reduction RFI problems.

But again, it's really an antenna/feedline problem, rather than lack
of ground. I'll agree.. Sometimes a ground can "bandaid" certain
problems, but I consider it a last resort solution.


For example here at my station where I have a half way decent single
point RF grounding system. If I remove just my ground connection to my
tuner - leaving everything else intact - and turn on my old CRT
computer monitor I have over an S9 noise level. Reconnect the ground
connection to the tuner the noise drops to less than S2. [BTW: I found
that out quite by accident when I rearranged my station.]

Sounds like that particular antenna system is not very well decoupled
if you are having noise ingress problems of that level.
I have a 21 inch CRT sitting right next to my ungrounded radio and
have no noise problems at all.

Station grounds can beneficial for several reasons.

Well.. Dunno.. I guess for some people.. Myself, I have no need
for one at all. Even running full legal limit power.
I can say for sure, there ain't no way he is going to get a decent
"RF"
ground on the 2nd floor of that building by running a wire to it.
So if I were him, I would forget all about it, and use better, more
modern 21st century techniques to deal with any common mode
problems that might or might not pop up.
MK