VHF Narrowbanding

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Apr 8, 2010
1,606
Frers 33 41426 Westport, CT
http://transition.fcc.gov/pshs/public-safety-spectrum/narrowbanding.html

Anyone familiar with this as it applies to marine VHF? It would appear that it doesn't apply as it specifically says
public safety and business industrial land mobile radio systems
which does not seem to apply to marine applications, however I'm pretty sure marine VHF does use 25kHz channels...

Are all our old VHF radios about to become illegal to operate?
 
Sep 25, 2008
7,344
Alden 50 Sarasota, Florida
Although the channels are 25 Khz apart, the typical deviation of a VHF marine FM radio is 12.5 Khz. Hence the separation. In other words, not a problem.
 

MrUnix

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Mar 24, 2010
626
Hunter 23 Gainesville, FL
Although the channels are 25 Khz apart, the typical deviation of a VHF marine FM radio is 12.5 Khz. Hence the separation. In other words, not a problem.
Are you sure about that Don? I was taught that marine VHF was considered wide band FM (16F3 Modulation).. No more than +/-5Khz deviation and total bandwidth of 16Khz (hence the 25Khz separation between channels). Then again, I'm usually wrong :)

Cheers,
Brad
 
Sep 25, 2008
7,344
Alden 50 Sarasota, Florida
I'm not sure. It's been a few too many years ago that I had a deviation meter on my marine VHF. Hopefully, one of the other hams on here will chime in.
 
Dec 2, 2003
1,637
Hunter 376 Warsash, England --
Even the FCC would not dare to meddle with the international standards for marine communications without universal consultation and agreement.
 
Jan 4, 2010
1,037
Farr 30 San Francisco
I read the FAQs looks like it is for government agencies only.

Also as a point of practicality, do really believe the government is going to try to grab your radio from your cold dead fingers?
 
Apr 8, 2010
1,606
Frers 33 41426 Westport, CT
I found a FAQ last night on the state of Virginia website about it that specifically said marine shore stations, which I interpreted as things like fuel docks, marinas or shipyards, must comply and cease operation of old equipment soon, but on the same page it also said marine based VHF was exempted?? So according to Virginia, we can use our radios to talk to other boats, but not the fuel docks and marinas...
 
Nov 6, 2006
10,053
Hunter 34 Mandeville Louisiana
Might mean things like fuel terminals for ships and places like refineries where ships load and unload..?? I know that occasionally, the normal refinery communications were switched to use marine channels for docking tankers.. It may be that those radios are the ones they are trying to narrow down to keep splatter out of other channels..??
 
Nov 23, 2011
2,023
MacGregor 26D London Ontario Canada
Do you need a license to operate VHF in the USA? You do in Canada. My boat came with a radio and I don't have a VHF license. I had a CB license 25 years ago... I don't see my self getting a VHF license as it can be turned off when appropriate.
 
Apr 27, 2010
968
Beneteau 352 Hull #276 Ontario
finding41 take a look here. http://www.tc.gc.ca/eng/marinesafety/oep-navigation-radiocomms-faqs-1489.htm

You should get your ROC license from Power and Sail Squadron for Canada and you will need a Station License if you plan to visit the USA.

You could be fined if you are boarded and can't produce the Station License. Probably never happen.

The station license is just $35 each year and no test required.

The ROC license is a one time fee and is good for life.

In the USA they don't need an operators license as stated below:


You do not need a license to operate a marine VHF radio, radar, or EPIRBs aboard voluntary ships operating domestically. The term "voluntary ships" refers to ships that are not required by law to carry a radio. Generally, this term applies to recreation or pleasure craft. The term "voluntary ships" does not apply to the following:
  1. Cargo ships over 300 gross tons navigating in the open sea;
  2. Ships certified by the U.S. Coast Guard to carry more than 6 passengers for hire in the open sea or tidewaters of the U.S.;
  3. Power driven ships over 20 meters in length on navigable waterways;
  4. Ships of more than 100 gross tons certified by the U.S. Coast Guard to carry at least one passenger on navigable waterways;
  5. Tow boats of more than 7.8 meters in length on navigable waterways; and,
  6. Uninspected commercial fishing industry vessels required to carry a VHF radio.
  7. Ships required to carry an Automatic Identification System (AIS) transceiver by the U.S. Coast Guard regulations enacted pursuant to the Maritime Transportation Security Act of 2000.
Ships are considered as operating domestically when they do not travel to foreign ports or do not transmit radio communications to foreign stations. Sailing in international waters is permitted, so long as the previous conditions are met. If you travel to a foreign port (e.g., Canada, Mexico, Bahamas, British Virgin Islands), a license is required. Additionally, if you travel to a foreign port, you are required to have an operator permit.
 

kenn

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Apr 18, 2009
1,271
CL Sandpiper 565 Toronto
This FAQ (go to the bottom) says that these changes do not apply to the marine VHF band. At the top, they list who it does affect.

This Coast Guard page on maritime VHF frequencies doesn't mention narrowbanding at all.

So, I'm fairly confident that our beloved marine VHF channels are not affected, including shore-based stations on ch 68.
 
Nov 23, 2011
2,023
MacGregor 26D London Ontario Canada
We do plan to go to the USA in a year or two. So it looks like will have to get it. My wife and I just got our PCOC's last mo. from the local power and sail squadron. They had a VHF course at the same time. I'll look into taking it next winter with her too.
 
Jun 6, 2006
6,990
currently boatless wishing Harrington Harbor North, MD
Hey guys, this is for businesses and Public safety orgs that have a license with the FCC for use of the VHF/UHF spectrum. Stuff like taxi and fire departments.
Marine radio is governed by international agreement so it can't be changed by the FCC alone.
For the record Marine VHF uses 50 kHz bands so not only are we safe we are FAT.
 
Jun 6, 2006
6,990
currently boatless wishing Harrington Harbor North, MD
oops
That would be 25 kHz bands so we ain't so fat
 
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