VHF Antenna

b_arrington

Well-Known Member
GOLD Sponsor
Feb 21, 2007
3,482
Setauket, NY
Boat Info
Back Cove 37
AB Ventus 9VL
Engines
Cummins QSC 8.3 600
Need some guidance for a vhf antenna. To be mounted on a mast on a hard top, probably need a 4 footer or whip to maintain a reasonable clearance. Suggestions?
 
If you're able to mount the antenna on a ratchet mount, you can have an 8 foot antenna, that can be tilted down if you need to go under a low bridge or something. VHF range is largely dependent on the height of the antennas on both ends, along with the gain of the antenna.

Interesting read: https://www.sportfishingmag.com/choosing-and-using-marine-vhf-antenna/
 
If you're able to mount the antenna on a ratchet mount, you can have an 8 foot antenna, that can be tilted down if you need to go under a low bridge or something....

Good point...Also, if the ratchet mount is reachable from the helm so you don't have to leave. even better... When I single-hand, it's much easier....
 
Thanks for the link.

I'm planning on using the spreader on the mast to mount the antenna. It has a screw-on mount, so a ratchet mount looks out, although they are useful. The mast specs also limit the antenna height to 4 feet or less so it looks like I'm limited to a 6 db or more likely a 3 db antenna.
 
IMG_4230.JPG
What you need is called a "stand off". It is a metal post with a female or male thread that has a base plate with four holes at the corners for screws. You mount it on the hardtop and screw the VHF antenna into the stand off.
 
Good point...Also, if the ratchet mount is reachable from the helm so you don't have to leave. even better... When I single-hand, it's much easier....

Good advice if you will be going under any low bridges.
I could reach the ratchet mount from the helm on my old boat, but for this one I have to leave the helm to lower it.
 
Good advice if you will be going under any low bridges.
I could reach the ratchet mount from the helm on my old boat, but for this one I have to leave the helm to lower it.

There is no way I'd mount an antenna without a ratchet mount...You don't understand the convenience until you miss it... You should be able to mount one and reach it on the 410 just like my 400...
 
There is no way I'd mount an antenna without a ratchet mount...You don't understand the convenience until you miss it... You should be able to mount one and reach it on the 410 just like my 400...

I probably could but it would still involve having to remove side curtains (a PIA) or something so I’ve left it alone. This is my third season with this boat and I’ve only had to lower it a couple of times so it’s not the end of the world. At least it’s on a ratchet mount so I just need a quick minute away from the helm.
 

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