April 23rd 17, 05:03 PM
posted to rec.radio.amateur.antenna
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First recorded activity by RadioBanter: Nov 2012
Posts: 989
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Antenna for Marine VHF
On 4/23/2017 12:00 PM, rickman wrote:
On 4/23/2017 10:17 AM, Ralph Mowery wrote:
In article ,
says...
On Sat, 22 Apr 2017 12:43:39 -0400, rickman wrote:
I've also considered the possibility of a higher powered unit built
into
the boat with a small remote control.
A higher power transmitter will help the Coast Guard hear you but will
do nothing for you hearing the Coast Guard. More antenna gain, and a
higher antenna are better solutions.
Going from 5 to 25 watts of FM will gain almost nothing. Raising the
antenna several feet from the sitting down position will gain a lot.
Are you saying that a hand held 5 watt transceiver with a rubber ducky
antenna will reach all receivers because of the line of sight
limitation? Is that true even for contacting a land station with a 200
foot high antenna? A 3 foot high antenna and a 200 foot high antenna
give nearly 20 statute miles of range. Will 5 watts be heard that far
away?
Opps, make that nearly 20 nautical miles. It's over 22 statute miles.
--
Rick C
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