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Old November 12th 06, 02:49 AM posted to rec.radio.amateur.antenna
Wayne Wayne is offline
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First recorded activity by RadioBanter: Jul 2006
Posts: 409
Default What is RF ground?


"John Smith" wrote in message
...
David wrote:
What would you define RF ground as? There seem to be a lot of different
ideas.


David:

Ground can be a relative thing. What I have always found to be good
advice is that EVERY ground, at some point, be allowed to reach a low
ohmic earth ground (best possible if it all occurs at the exact same earth
ground point--or no current flows and there is no voltage potential
between such grounds.) For example, although a dipole needs no rf ground
directly at the point it connects to the feed-line, the rig hooked to such
an antenna and feed-line should be given a good earth ground.
snip



Regards,
JS


When you refer to hooking the rig/dipole to a good earth ground, are you
still talking about an rf ground, or a safety ground?
I see no requirement to connect a nicely matched dipole to an earth ground
for rf purposes. For example, a battery operated transmitter feeding a
dummy load wouldn't need one either.