Hello, Frank here.
Today we're going to talk about Subpart A, Subpart B and Subpart J. Okay, do you wonder if this guy has been out in the sun too long? Well, no ......... maybe. This is what we're going to talk about today.
Subpart A is GMRS, General Mobile Radio Service. Subpart B is FRS, Family Radio Service. Subpart J is MURS, Multi-Use Radio Service. All of this comes from CFR, Code of Federal Regulations, Title 47, Telecommunications, Part 95, Personal Radio Services. This is a little review of where Federal Regulations come from. Subpart A & B we are going to talk about together - that's GMRS and FRS.
These little walkie-talkie type two way radios that guys use during hunting season, and their kids play with out in the yard, are actually GMRS/FRS radios. Okay, what's the difference?
GMRS has 23 channels that operate between 462 - 467 MHz (megahertz). For future reference, when we get into ham radios this is UHF (ultra high frequency) and the ham people call hand held radios HT's (handy talky). But for our purposes, we will call them two way radios.
FRS shares GMRS channels one through seven. Channels eight through fourteen are only FRS. Channels fifteen through twenty-three are only GMRS. FRS has a maximum output of 500 milliwatts, or 1/2 watt. GMRS has an output of up to 5 watts.
Now here is the big difference. To operate on GMRS you are required to have an FCC license. Not a ham license, but an FCC license. For FRS there is no license required. So, channels 8 - 14 do not require a license. Channels 1 - 7 do not require a license if you operate on low power. Do most people have a license that operate on GMRS? Do most people drive 56 MPH in a 55 MPH zone? I have never met a person that actually has a GMRS FCC license. But if you do apply for one and receive it, then legally anyone in your family or circle of friends at your house can use your radios.
So much for legal. From here on out, I am just going to refer to these radios as GMRS.
Cobra, Midland, Uniden and others all make two-way radios. All make claims of transmitting 10 miles, 20 miles or 36 miles, but remember this is under perfect conditions. An example: mountain top to mountain top, you can do much farther than 36 miles away. So, take 36 miles distance with a grain of salt. These are line of sight communication devices. If they are putting out four or five watts, the one that advertises 10 miles will go as far as the one advertising 36 miles. What's the difference? Features. Some have duck calls and coyote calls. Some have weather ability. Some have clocks. But if you want a basic radio and you don't care about duck calls, then just about any of these radios will meet your needs.
Most of these two-way radios have rechargeable batteries that can be recharged from the provided cradle and AC and DC power connections. Surprisingly, not all radios come with a charging system. Some only operate off of AA batteries. I would avoid these. Most of the radios come with a battery packet insert that can be easily removed and replaced with AA or AAA batteries, or rechargeable batteries. Some will recharge rechargeable batteries while they are in the charging cradle, but most won't. Here's my point. If you buy a certain type of radio, you can put rechargeable batteries in it, and you can recharge them in the cradle
that came with the radio. Rechargeable batteries will last much longer
than the battery packet that came with the radio. Some manufacturers
make radios that look almost identical and some will recharge
rechargeable batteries in the cradle, but most will not. I learned this
from simple trial and error. It's a lot more handy to come in at
the end of the day, take off the radio, put it in the recharging cradle
and the next morning you are ready to go. Or you can take off the radio,
take the back off of the radio, take the batteries out, recharge the
batteries, then put the batteries back in the radio and replace the
cover. It's your choice.
I'm going to make a recommendation here. I use a Midland GXT 1050. The GXT 1000 is the exact same radio, one is black, one is camo and the black one costs about $10 - $20 less. When you buy this package, it comes with
two radios, two battery packets, a charging cradle, AC and DC power supplies, and two earphone/microphone type headsets. I have never used the earphone/microphone accessory. I use a 12 volt system to charge all of my radios, which means that you can charge your radios in your car if you have the charging cradle with you. The reason I recommend this radio is you can remove the battery pack and insert four rechargeable AA batteries and they will charge in the charging cradle. They are advertised up to 36 miles if you live on top of a mountain. Just kidding. I have used this particular radio for a number of years. I have also bought some of the other Midland radios that look identical, but will not charge the rechargeable batteries while inside the radio. Prices vary greatly from dealer to dealer, some folks are a lot more proud of their stuff than others.
Now I am going to switch over to MURS, Mult-Use Radio Service, for a minute. MURS operates from 151 - 154 MHz, which is in the VHF (very high frequency) range. MURS is also line-of-sight communication. Maximum output power is 2 watts. It does not require a license to operate. There are five channels. In the rural areas few to none use the MURS frequencies. I'm sure over time things will change, but things change slowly in rural areas. I became aware of MURS about five years ago when reading one of James Wesley, Rawles books. He is the author of SurvivalBlog.com. There is not much traffic on channels one through three. Channels 4 and 5 are old business channels, so around some larger cities there are businesses that still use these channels because they have not been phased out yet.
I do not know of any manufacturers that produce an exclusive MURS radio. Most guys that use the MURS frequencies use a commercial radio. I will give you more information about MURS and how to operate on the five channels in the next post. Most of the people that operate on MURS frequencies use modified ham radios or commercial radios. Both of these techniques are questionable. Remember, driving 56 MPH in a 55 MPH zone is illegal. But if you are not bothering anyone else, then you will not attract attention. As always, it's your choice.
If you would like to start looking at hand held commercial radios, try this site. Some of their radios are strictly ham radios and some are commercial. It is legal to operate a commercial radio on ham frequencies if you are a licensed ham, but it is not legal to operate a ham radio on anything but ham frequencies. While at this site, check out their power pole connectors. They have tons of information and easy to understand diagrams and pictures. I have bought from these people and in the future I will buy from them again.
Next time I'll talk more about commercial radios and modified ham radios. This will introduce us into the first part of the ham radio series.
We'll talk more later. 73, Frank