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Jonathan Ganz
 
Posts: n/a
Default Marine Radio RF Ground Question

Gilligan, you're way too nerdy for most of these people...

"Gay Sailor" wrote in message
link.net...
The simplest is a variable series LC circuit that tunes the ground path

for
the lowest impedance possible.
A caveat though, the voltage across either element is the circuit Q times
the applied voltage. If you drive a 12volt Vcc amplifier (voltage swing

of
24 volts) into a circuit with a Q of 10, there is 240 volts across the
series inductor and 240 volts across the series capacitor. So for your 12
volt output driver one would be wise to use 500 volt capacitors and
inductors.

Why not just convert your backstay antenna into a sleeve dipole? No ground
is necessary for this antenna, the radiation pattern is good and the
bandwidth is ok. I ran some NEC simulations on a 35 foot sleeve dipole

over
a seawater ground and found the patterns and SWR to be quite good. If I

get
a round to it I'll post the plans for such an antenna on a website. Any
engineer worth the title can look up a sleeve dipole on the net and figure
out how to build one too.

Swishy tither boy gay sailor!


"N1EE" wrote in message
m...
What is the best way to make a counterpoise for
a boat?

"Gay Sailor" wrote

A counterpoise.



"N1EE" wrote


What elements make a good Radio Frequency
(RF) ground system in a yacht?