Go Back  The Hull Truth - Boating and Fishing Forum > BOATING FORUMS > Marine Electronics Forum
Reload this Page >

Marine / Aviation handheld radio?? Looking for answers..

Notices
Marine Electronics Forum

Marine / Aviation handheld radio?? Looking for answers..

Old 05-08-2008, 11:56 AM
  #1  
Senior MemberCaptains Club Member
Thread Starter
 
Join Date: Aug 2007
Location: Back for good in the Sailfish Capital
Posts: 2,019
Received 194 Likes on 117 Posts
Default Marine / Aviation handheld radio?? Looking for answers..

I have googled many combinations of this and can't seem to find what I am looking for.

I am looking for a marine and aviation band handheld radio (preferably floating / waterproof, I know, I don't ask for much )
I am aware that VHF works on line of sight and sometimes a passing airliner may be the best way to call for help.

Google searches have yielded little results. I have found that Standard Horizon offers something close but only a receive capability for the aviation VHF.

Any ideas? Thanks!!
Old 05-08-2008, 03:36 PM
  #2  
Senior MemberCaptains Club Member
 
Join Date: Mar 2007
Location: Annapolis
Posts: 1,929
Likes: 0
Received 0 Likes on 0 Posts
Default Re: Marine / Aviation handheld radio?? Looking for answers..

I think that's the FCC plan. They're kind of grumpy lately.

Most aircraft radios guard 121.5, the emergency frequency that old epirbs transmitted on. There were so many false alarms that the Air Force thought they were spending way too much money chasing down prank calls, and 'inadvertent activations.' If you're picturing a gentlemanly emergency where you look up in a clear blue sky, see an airplane and just call it, forget it. They can't do much for you, or even see you, and if they were still in contact with shore based radio, the most they could do is relay your position, with three chances to garble that. If you are that far off shore, get a proper Epirb. It will cost less than two different handhelds!
Old 05-08-2008, 07:09 PM
  #3  
Senior MemberCaptains Club Member
Thread Starter
 
Join Date: Aug 2007
Location: Back for good in the Sailfish Capital
Posts: 2,019
Received 194 Likes on 117 Posts
Default Re: Marine / Aviation handheld radio?? Looking for answers..

sandyda - 5/8/2008 3:36 PM

I think that's the FCC plan. They're kind of grumpy lately.

Most aircraft radios guard 121.5, the emergency frequency that old epirbs transmitted on. There were so many false alarms that the Air Force thought they were spending way too much money chasing down prank calls, and 'inadvertent activations.' If you're picturing a gentlemanly emergency where you look up in a clear blue sky, see an airplane and just call it, forget it. They can't do much for you, or even see you, and if they were still in contact with shore based radio, the most they could do is relay your position, with three chances to garble that. If you are that far off shore, get a proper Epirb. It will cost less than two different handhelds!
Sandyda,

I appreciate the reply but what I failed to mention is that I am a commercial helicopter pilot and understand the VHF system fairly well. I've actually used a handheld radio when I had a problem with a helo. to hail a passing airliner in Alaska for assistance in relaying a posisition and message to my company.

So, any input on a marine / aviation handheld?
Old 05-09-2008, 12:40 AM
  #4  
Senior Member
 
Join Date: May 2007
Location: Miami, FloriDUH
Posts: 2,024
Likes: 0
Received 5 Likes on 4 Posts
Default Re: Marine / Aviation handheld radio?? Looking for answers..

There are no marine VHF radios type accepted to operate on the aircraft band.

So your options here are fairly limited. Of course you can buy two radios. This is actually the "legal" war around your problem.

OR...you can attempt to modify a radio to work on both bands. I know ham hand held radios are usually modifiable. So it is possible you can find a radio that will work on the aircraft band (transmitting in AM) and transmit FM on the marine band. You would also be able to transmit on all frequencies between the two.

Even the ham version (VX-7R) of the Standard Horizon HX471S is not able to transmit on AM. You can mod it to transmit on the aircraft band, but I think it would use FM. So that will not work.

But modifications and legal BS aside, there is another problem. The antenna. Your marine radio has a (minimal) antenna tuned for the marine band. So if you took the radio too far out of band the antenna would stop working. So you would still need to carry around two antennas and not forget which one to use.

In short, no. There is no single radio that can cover both the aircraft and marine band. For various reasons. And even if by chance you do find a radio that can transmit on both bands using the correct modulation for each - you will damage the radio by using frequencies out of the bandwidth of the antenna.

Of course, you also want something that floats and is waterproof. Now you are REALLY asking for too much
Old 05-09-2008, 12:44 AM
  #5  
Senior Member
 
Join Date: May 2007
Location: Miami, FloriDUH
Posts: 2,024
Likes: 0
Received 5 Likes on 4 Posts
Default Re: Marine / Aviation handheld radio?? Looking for answers..

Oh yea, one more thing.

If you are worried about calling for help beyond the range of a VHF radio, there is a solution. The marine SSB radio.
Old 05-09-2008, 04:17 AM
  #6  
Senior MemberCaptains Club Member
Thread Starter
 
Join Date: Aug 2007
Location: Back for good in the Sailfish Capital
Posts: 2,019
Received 194 Likes on 117 Posts
Default Re: Marine / Aviation handheld radio?? Looking for answers..

That sounds pretty definitive to me. Thanks for all the info and I guess I'll have to go with two radios if those are the capabilities I am seeking.

Thanks again!
Old 05-11-2008, 07:50 AM
  #7  
Senior MemberCaptains Club Member
 
Join Date: Mar 2007
Location: Annapolis
Posts: 1,929
Likes: 0
Received 0 Likes on 0 Posts
Default Re: Marine / Aviation handheld radio?? Looking for answers..

dadriva: I'm also a rotorhead. I flew Search and Rescue along the mid-atlantic coast in the 70's. I still have my UHF guard handheld survival radio from then, but I don't even carry it on the boat. Back then I really wished I could talk to my 'customers' but we didn't have anything but HF on board, and half the time their Epirb signal was so puny I would have to fly a cross track pattern to triangulate them. A dark night in foul weather is a lousy place to use a plotting board. However, DSC radios are going into Coast Guard aircraft as part of 'Rescue 21' and that makes for a whole new adventure. A VHF wired to a GPS on your boat makes for hours of search reduced to a direct flight, which means more fuel available for hovering in a rescue, and longer range. An Epirb means earlier reception, and firm position information. And its less expensive that buying two handhelds.
FINALLY: who's to say it isn't YOU that's the casualty? Are all of your guests going to be savy enough to talk to an airliner?

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are Off


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright © 2021 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.