GMRS vs CB |
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98TJ
RCRC Club Member RCRC Club Treasurer Joined: 10 May 2005 Location: Maysville, Madison County Status: Online Points: 8391 |
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Posted: 22 July 2021 at 9:02am |
1998 TJ 4.0 5spd Atlas 36" Swampers RE4.5 ARB's 44/44
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Recon
RCRC Club Visitor Joined: 10 April 2017 Location: New Market Status: Offline Points: 588 |
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I have a CB and GMRS in my Jeep, its nice having both. I use a 5 watt midland and works nice around town and talking to people on the trails. Its small also. Slightly larger than a pack of cigarettes.
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1988 YJ 33s locker-down
1996 F150 4inch lift 33s 2005 6.0 F250 35s 2020 Gladiator 35s 2005 TJ 33s Lockers |
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98TJ
RCRC Club Member RCRC Club Treasurer Joined: 10 May 2005 Location: Maysville, Madison County Status: Online Points: 8391 |
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I have a large box full of CB radios, coax, antennas, hardware, etc. I would hate to change over to GMRS, but that seems to be the way offroad is headed. It seems that CB is AM and GMRS is FM??? Also you can get a 50 watt GMRS radio and an FCC no-test license. Everything I read says GMRS is clearer and carries farther.
Now they have combination GPS/GMRS radios that can show all the vehicles in your group and their location on a topo map.
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1998 TJ 4.0 5spd Atlas 36" Swampers RE4.5 ARB's 44/44
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98TJ
RCRC Club Member RCRC Club Treasurer Joined: 10 May 2005 Location: Maysville, Madison County Status: Online Points: 8391 |
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1998 TJ 4.0 5spd Atlas 36" Swampers RE4.5 ARB's 44/44
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gumataotaom
RCRC Club Member Joined: 15 February 2014 Location: United States Status: Offline Points: 202 |
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Is that what u have now Brad or do you run both cb and gmrs?
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Jeep (not schoolbus) with scrapes underneath from following Toyotas
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98TJ
RCRC Club Member RCRC Club Treasurer Joined: 10 May 2005 Location: Maysville, Madison County Status: Online Points: 8391 |
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We have had some handheld gmrs radios for years, but not mounted in our vehicles. But gmrs is coming and will be the standard offroad radio in a few years. Gmrs is now required in every vehicle in jeep jamboree. I think our 2m ham radios work with gmrs radios.
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1998 TJ 4.0 5spd Atlas 36" Swampers RE4.5 ARB's 44/44
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gumataotaom
RCRC Club Member Joined: 15 February 2014 Location: United States Status: Offline Points: 202 |
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Good to know. Pricey compared to the cb I have mounted now. I do have an old handheld Garmin gps with GMRS walkie type In a box somewhere that I used to mark camping sites and trails in Colorado but never used the gmrs option (didn't have a license). Seen videos of folks using them in their rigs while I watched overlanding videos on YouTube at night but never priced them til you sent that article.
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Jeep (not schoolbus) with scrapes underneath from following Toyotas
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98TJ
RCRC Club Member RCRC Club Treasurer Joined: 10 May 2005 Location: Maysville, Madison County Status: Online Points: 8391 |
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I don't know much about them, but I assume they are FM and legal up to 50 watts vs AM and 4 watts for a CB.
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1998 TJ 4.0 5spd Atlas 36" Swampers RE4.5 ARB's 44/44
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gumataotaom
RCRC Club Member Joined: 15 February 2014 Location: United States Status: Offline Points: 202 |
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Found a Midland like the one in the article with remote but the 15w model for 149 at office depot/max. Guess I can hold til the club's rigs all migrate to that standard.
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Jeep (not schoolbus) with scrapes underneath from following Toyotas
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98TJ
RCRC Club Member RCRC Club Treasurer Joined: 10 May 2005 Location: Maysville, Madison County Status: Online Points: 8391 |
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I don't know if rcrc will ever change. When we were in moab last year I had a handheld gmrs with scan capability. We heard a lot more folks on gmrs than cb, but I think most were SxSs.
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1998 TJ 4.0 5spd Atlas 36" Swampers RE4.5 ARB's 44/44
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alabamatoy
Admin Group I dont work here anymore... Joined: 16 February 2004 Location: Signal Mountain Status: Offline Points: 9369 |
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Caution, a ham is about to geek out on this topic.... GMRS and FRS share frequencies. FRS is limited to 0.5 watt (500 milliwatts). Its all UHF (ultra-high frequency) and FM (frequency modulation). Most UHF capable ham radios will receive on FRS/GMRS freqs, but wont be able to transmit. Often, you can find modifications out there for ham radios to make them transmit on freqs outside of their designed range. But this can fry the radio, too, especially if you do not have an antenna tuned for the frequency. For receive, you can use a bent coathanger and it wont harm the radio, but for transmit you must have an antenna "tuned" to the frequency or else the trasmitted power reflects back into the radio and will eventually fry it. A Standing Wave Ratio (SWR) meter is used to measure this reflectivity and tune the antenna. GMRS and FRS frequencies: http://www.gmrsfrequencies.com/gmrs-frequencies-list.html All the GMRS/FRS is in the range of 462 megahertz (mhz), or .7meter, 70 centimeter wavelength. Ham 70CM band is 440-444 mhz. CB is AM (amplitude modulation), with its crappy audio and unpredictable propagation. CB is HF (high frequency) and in the range of 27 megahertz, or about 11Meter wavelength. CB is limited to 4 watts, but this is widely ignored, with many truckers running "kickers" of 1000 watts or more. There is little to no policing (actually, hams are supposed to help the FCC police the airwaves) so there's lots of noise and cussing and such on CB. And HF bounces all around, bounces off layers of the atmosphere etc - so often you can talk across the continent but not across the county. Everyone is probably going to find GMRS much more usable and effective, especially with its more-or-less built-in Automated Position Reporting System (APRS, the capability to show locations of stations). Also, as the linked page above shows, there are "repeaters" on GMRS - these are (usually) fixed location stations, often high on a mountaintop or commercial tower, which listen on one freq (the input freq) and xmit what they hear on a nearby freq (ie they repeat everything). So you set your radio to listen to the repeater output freq, and transmit on the input of the repeater, and its as though you are sitting at the top of that high tower, with muuuuuch greater range. Theres also capabilities like encoding a tone in the transmission, and everyone setting their radio to only listen for that tone (its sub-audible, so YOU dont hear the tone, but your radio does). This can be used to block everyone on a given frequency who is not using the pre-shared tone, and squelch other groups from your conversation. The downside is that the GMRS radio hardware is expensive compared to CB, with different coax, and antenna requirements, and technically you are required to have a license, for which there is no test, only application and fee to FCC. You think all those drunken rap-blasting SXS fellers have licenses? Yeah, Im sure they do. I personally think transition to GMRS would be a good thing for RCRC....but the club should consider investing in a couple of handhelds to loan out to newbs for club rides like we did with the CBs. Time and technology marches on. Keep up or get left behind. Next we will be considering electric Jeeps, like Barbie.
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"If you didnt buy your 1st gen 4Runner new, then YOU are a newbie!!"
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gumataotaom
RCRC Club Member Joined: 15 February 2014 Location: United States Status: Offline Points: 202 |
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Thanks for the info. Good read. I do like the private channel that all can join to reduce the chatter of others on the net. It would take everyone's buy in to baseline our comms. I'm up for it but prefer not to mount 2 radios and antennas in my rig so one or the other. Were so close in our rides that cb works just fine but nice to have something with longer range especially if meeting up 2 hrs away tio catch folks on their trip up or back if they're having issues. But I guess that's what cell phones are for if you have their numbers and within coverage.
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Jeep (not schoolbus) with scrapes underneath from following Toyotas
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alabamatoy
Admin Group I dont work here anymore... Joined: 16 February 2004 Location: Signal Mountain Status: Offline Points: 9369 |
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Im interested in the MXT575 since it can be remote mounted.
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"If you didnt buy your 1st gen 4Runner new, then YOU are a newbie!!"
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98TJ
RCRC Club Member RCRC Club Treasurer Joined: 10 May 2005 Location: Maysville, Madison County Status: Online Points: 8391 |
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Yesterday when we would get a little ways apart, no cb connection
One of those gmrs 50 watt fm radios would have to do a better job. I think they are coming, but it may be a few years.
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1998 TJ 4.0 5spd Atlas 36" Swampers RE4.5 ARB's 44/44
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98TJ
RCRC Club Member RCRC Club Treasurer Joined: 10 May 2005 Location: Maysville, Madison County Status: Online Points: 8391 |
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I don't do well with those mics with all the buttons. I keep pushing buttons by accident.
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1998 TJ 4.0 5spd Atlas 36" Swampers RE4.5 ARB's 44/44
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Recon
RCRC Club Visitor Joined: 10 April 2017 Location: New Market Status: Offline Points: 588 |
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This made me feel guilty so I went to the FCC, applied and payed for a license.
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1988 YJ 33s locker-down
1996 F150 4inch lift 33s 2005 6.0 F250 35s 2020 Gladiator 35s 2005 TJ 33s Lockers |
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98TJ
RCRC Club Member RCRC Club Treasurer Joined: 10 May 2005 Location: Maysville, Madison County Status: Online Points: 8391 |
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1998 TJ 4.0 5spd Atlas 36" Swampers RE4.5 ARB's 44/44
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dirtbikedad
RCRC Club Member Joined: 07 January 2011 Location: Athens, AL Status: Offline Points: 87 |
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I have both now. 25 W Rugged Radios and a CB.
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dirtbikedad
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98TJ
RCRC Club Member RCRC Club Treasurer Joined: 10 May 2005 Location: Maysville, Madison County Status: Online Points: 8391 |
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Does you rr fadio talk on the special rr frequencies as well as normally gmrs frequencies?
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1998 TJ 4.0 5spd Atlas 36" Swampers RE4.5 ARB's 44/44
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dirtbikedad
RCRC Club Member Joined: 07 January 2011 Location: Athens, AL Status: Offline Points: 87 |
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Rugged GMRS mobile radios will communicate with all GMRS and FRS radios on channels 1 - 7, and 15 - 22. * They are GMRS repeater compatible, and can communicate with GMRS radios from other manufacturers including Motorola, Midland, Uniden, and many more.Rugged GMRS mobile radios will communicate with all GMRS and FRS radios on channels 1 - 7, and 15 - 22.
Copied this from their website. |
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dirtbikedad
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98TJ
RCRC Club Member RCRC Club Treasurer Joined: 10 May 2005 Location: Maysville, Madison County Status: Online Points: 8391 |
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when we went on that last ride with the RCWs, they had rr radios that worked on a special rr frequency.
Edited by 98TJ - 16 January 2023 at 6:42am |
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1998 TJ 4.0 5spd Atlas 36" Swampers RE4.5 ARB's 44/44
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dirtbikedad
RCRC Club Member Joined: 07 January 2011 Location: Athens, AL Status: Offline Points: 87 |
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dirtbikedad
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dirtbikedad
RCRC Club Member Joined: 07 January 2011 Location: Athens, AL Status: Offline Points: 87 |
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I was told RCW used channel 16 most of the time which is a standard gmrs channel/frequency
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dirtbikedad
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98TJ
RCRC Club Member RCRC Club Treasurer Joined: 10 May 2005 Location: Maysville, Madison County Status: Online Points: 8391 |
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at stoney lonesome, they broke into 3 groups, easy, medium and hard. We were in the hard group was on a commercial rr frequency. Not sure what channels the other two groups were on.
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1998 TJ 4.0 5spd Atlas 36" Swampers RE4.5 ARB's 44/44
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98TJ
RCRC Club Member RCRC Club Treasurer Joined: 10 May 2005 Location: Maysville, Madison County Status: Online Points: 8391 |
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I plan getting a 50 watt gmrs radio, but I ain't sure where I can mount it. I don't want to get rid of our ham or cb.
Edited by 98TJ - 16 January 2023 at 6:53am |
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1998 TJ 4.0 5spd Atlas 36" Swampers RE4.5 ARB's 44/44
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stout22
RCRC Club Member Joined: 18 June 2008 Location: Athens, AL Status: Offline Points: 763 |
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I have a Baofeng vhf/uhf uv-5rtp handheld. Will it talk with the to the latest GMRS radios?
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stout22
76 Bronco 302, EFI, C4 Auto, 4.3 Atlas, 3.5" lift, 1" body, locked d44 and Locked 9" |
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98TJ
RCRC Club Member RCRC Club Treasurer Joined: 10 May 2005 Location: Maysville, Madison County Status: Online Points: 8391 |
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I think they will with some programing.
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1998 TJ 4.0 5spd Atlas 36" Swampers RE4.5 ARB's 44/44
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98TJ
RCRC Club Member RCRC Club Treasurer Joined: 10 May 2005 Location: Maysville, Madison County Status: Online Points: 8391 |
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1998 TJ 4.0 5spd Atlas 36" Swampers RE4.5 ARB's 44/44
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RL-RRC
Admin Group Forum Curator Joined: 19 April 2006 Location: Kirkland,TN Status: Offline Points: 1000140 |
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I've been doing the handheld GMRS and Baofeng with a vehicle mounted remote antenna for a while now. It seems most clubs outside RCRC are using GMRS. So I just finally bought a midland mxt275 because of it small footprint in the vehicle.
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96 Lexus lx450
85 Toyota Truggy built by Don 02 Jeep WJ Chance favors the prepared! |
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98TJ
RCRC Club Member RCRC Club Treasurer Joined: 10 May 2005 Location: Maysville, Madison County Status: Online Points: 8391 |
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I'm going to get something this year. I have two hand helds that I can use, but I'd rather have the 40 or 50 watt mounted radio. I need them for 3 trucks, so that's gonna be a lot of money, wire pullin' and antenna mounting. Do you have to tune those antennas swr like cb antennas? I got to study up on gmrs so I don't buy the wrong set up. I know I want scan, all channels including repeater channels....
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1998 TJ 4.0 5spd Atlas 36" Swampers RE4.5 ARB's 44/44
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