VHF/AM/FM splitter on my masthead VHF antenna - Page 2 - SailNet Community
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post #11 of 12 Old 07-16-2003
 
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VHF/AM/FM splitter on my masthead VHF antenna

I bow to the well respected authority on Marine electronics and communications. Just rememeber that any additional connector in the cable adds not just loss but also to the SWR. I was Radio in the service and it never took alot to start getting almost as much reflected power as my PA was putting out.
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post #12 of 12 Old 07-20-2003
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VHF/AM/FM splitter on my masthead VHF antenna

Gord May should NOT be confused with Gordon West, the well known authority on Ham Radio & Electronics. Mr. West generally sells his opinions, & I have''nt noticed his presence on this forum.
While I do consider myself somewhat "expert" in marine systems (particularily electrical), and have many strongly held opinions, my endorsement of antenna splitters is "lukewarm".
I have not noticed any appreciable degradation of VHF performance, when properly installed.
A splitter cannot be expected to improve radio reception, except as compared against an installation otherwise without an external antenna.
I have seen them used to ensure that a VHF radio antenna is "disconnected" when the SSB radio is transmitting - but I prefer to use a "double throw" power supply switch (to the radios) in this instance. I''ve also seen them used to provide a "quick connect" to a rail-mounted emergency antenna (in the event of dismasting, and loss of mast-top antenna). I prefer to merely run a co-ax from the radio area to the rail location (seal the outside PL connector against moisture) and store the emergency antenna until connection required (hopefully never).
The "grounding" feature is usefull in lightning amelioration.
I hav''nt used the Shakespear switch, and still cannot recall the manufacturer of the one I''ve been satisfied with (it was green).
Regards,
Gord May (not "Gordo" West)


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