I saw some threads on this issue but noticed they were a while back so I figured I'd post it new to get "attention" or whatever. Are these people saying you can use these in your mobile/base whatever just like any other radio? I guess I didn't think it would work properly or should I say the same as in a boat taking into consideration of grounding. Sounds stupid I guess. I never thought of it I suppose. What antenna would be used? Any sort of ham?
mobile use
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LarrySC
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You can use a Marine radio anywhere for personal comms if you are 112 miles inland from any coastal area or any river where marine radios are used. You would need a commerical VHF antenna cut for 156/157 mHz.
LarrySC said:
I understand that, sort of. You must have newer, updated fcc info because anything I've ever seen indicates you need a license and it's for marine use. Anywho, That wasn't really my querry. I was talking about the actual technical issue of it. That it would work the same as any other comm set-up (base/mobile, unit-to-unit etc)
K2GOG
Member
if you compare a VHF marine radio to a similiar VHF commercial or VHF ham radio with the same power and same antennas, yes you should get about the same performance. (136-174Mhz). The main difference is licensing, geographic location and application
Yeah I kind of figured that but since marine would operate without a true ground I didn't know if having a ground - in a mobile or base - if it would require different specs.
rescuecomm
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Larry, are saying you can apply for marine frequencies but under Part 90 radio services? That is what I understood the re-use deal was. Not that you can us the marine VHF radios themselves.
Bob
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N_Jay
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LarrySC said:
Where did you get that info (I resisted saying "crap!")
kf4lne
Member
N_Jay said:
i think that info may have been tainted by the contnts of the septic tank!
if I remember correctly a VHF marine frequency or one within that frequency range can be applied for under part 90 regulations but requires transmitters certified under part 90. You have to be so many miles away from anywhere marine radio will be used so to prevent interference between the 2 systems and jump through 3 flaming hoops and be the descendant of the first person to ever use that frequency and so on. It does not mean you can use your VHF marine radio like a regular class D CB radio just because you are 112 miles from the water.
As for setting up a marine radio in land mobile situation it can be done and is often done as a way for hunters to communicate with each other. In my area it is not uncommon to see a marine radio antenna designed to be installed on a boat attached to the tool box of a pick up truck or the rear rack of a ATV. This is usually a good indication that the user is not a radio person and instead has a marine radio kit mounted in the truck. Radio geeks like us tend to install antennas designed for the application, like a mag or lip mount on a car and a shakespear boat mount on the boat and so on. Typically these VHF marine antennas are center fed dipoles where the feed line comes up to the center feed point through the tubing used to make the grounded side of the antenna, thats why they dont need a ground plane where as most end fed antennas need a ground plane like the roof of the car.
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"Can" you use marine radios in a car or base station? Sure... the radio doesn't care. But it's simply not legal, no way, no how. I'm not talking about licensed coast stations, I'm talking about LarrySC's comment. Simply not true.
That said, there ARE applications where the marine frequencies are being licensed under waiver for non-marine usage. This is with the caveat that it be on a secondary non-interfering basis. If the local PD is licensed on CH 68 for police work, and it's found that their operation is interfering with marine activity, the local PD gets to shut down and find somewhere else to play.
Ok... so it's an old thread. I'm new here, and had to say something.
That said, there ARE applications where the marine frequencies are being licensed under waiver for non-marine usage. This is with the caveat that it be on a secondary non-interfering basis. If the local PD is licensed on CH 68 for police work, and it's found that their operation is interfering with marine activity, the local PD gets to shut down and find somewhere else to play.
Ok... so it's an old thread. I'm new here, and had to say something.
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