VHF Install

[Nathan Greenland]

I am planning to install a VHF on board my Catalina 22. I am debating whether to use a deck mounted antenna or a mast mount. The deck mount is higher gain, much easier install to install and cheaper. It might also be operational after a dismasting. The mast mount would be higher up (better line of sight) and less likely to be damaged (except a dismasting). It would have a lot more connectors and coax (line loss). It would also be a nuisance when lowering the mast (about 4-6 times a year). Looking around the marina, I see both approches used. What are your thoughts?

 

[Don]

VHF antenna

I have had both and couldn't tell any difference in performance. Deck or stern rail mount conforms to my KISS principle.

 

[David Williams]

antenna

I installed mine on my mast head:I think the reception is better, but am not sure the 40 foot of coax might loose some of the transmission power.I think that it would be just as well to install an 8 ft antenna on the boat. Plus and minus:It seems that there always conflicts with new installations on the boat. A mast head antenna will not be in the way of anything, except maybe a windvane. I had to fabricate a bracket to mount my antenna 4" forward of the mast head.To install a mast head antenna, one probably will drill another hole in the deck, and run the coax inside the cabin. That is what I did. I did place a panel mount connector on the deck, so I could disconnect my antennat when lowering and transporting the mast...another connection to be cleaned and maintained. You should also consider a ground plane. They make self grounding antennas...expensive. I purchased a less expensive antenna with radial wires for grounding. I was worried about how it would work on my mast head...no problem. I went to a local communications shop to get ground plane advice.David

 

[Mike C22]

use the proper antenna

There are different antennaes for different uses. Some have a long range, but narrow band. Others have shorter ranges, but wider bands. These are more suitable for sailboats which roll and heel a lot. If you use the former mentioned type, your signals will either go up into space, or down into the water. They may miss other radios, leaving your mayday unheard. Best to check with the manufacturer before buying and installing.