Posts Tagged ‘GMRS’

The Talisman Radio

Lately, I’ve encountered many people who apparently believe their radio is a Talisman. What is a Talisman, you say?

Talisman – An object marked with magical signs and believed to confer on its bearer supernatural powers or protection.

These people purchase some kind of two-way radio and have it stored away in their desk or closet, believing that having it will confer communication powers during an emergency. (Not to pick on Baofeng owners, but these radios are almost always a Baofeng UV-5R.)  In many cases, they have the radio programmed with a long list of radio frequencies that have been identified as being good to have during an emergency. These are usually a mix of amateur radio, Family Radio Service, General Mobile Radio Service, Multi-Use Radio Service, search and rescue, and local fire and police frequencies.

Usually, the owner of the Talisman Radio has no real idea of how these frequencies are used. Again, someone told them they are good frequencies to have in a SHTF scenario. They often don’t know how to operate the radio or know what to expect in terms of its communication capabilities. It is simply a magical device that will save them when bad stuff happens.

Sometimes these people take the basic step of getting their amateur radio Technician license. I applaud this decision as it is the first step towards learning about ham radio. It also provides the proper license for legally using the radio on the ham bands. Unfortunately, many of these people just memorize the questions long enough to pass the exam and don’t gain any useful knowledge. This is a fundamental error. A much better approach is to focus on acquiring skills, knowledge, and equipment as part of their emergency preparedness plans. (Serious preppers know and practice this.)

If you are the owner of a Talisman Radio, I urge you to build your skills and get your ham license (if you don’t already have it.) There are many good license books available and the Ham Radio School online course is an excellent approach to learning this material. If you encounter Talisman Radio owners, please encourage them to get some training and learn how to use the radio. Don’t offer to program their radio with a bunch of frequencies they are not licensed to use and that may cause considerable trouble in the frequency spectrum. Encourage and help them but don’t enable their dependence on a Talisman Radio that will only let them down.

Training, training, training.
That’s what I think. What’s your opinion?

73 Bob K0NR

 

The post The Talisman Radio appeared first on The KØNR Radio Site.

TD-H3 VHF/UHF Radio

News Flash: I found a cheap economical VHF/UHF handheld that I really like. The TIDRADIO TD-H3 is getting a lot of attention from YouTube reviewers. You can think of this as an improved Baofeng UV-5R, with a few key features that grabbed my attention:

Improved Look and Feel: This radio looks like a quality product, much improved over the plastic Lego-style industrial design of the Baofeng radios. It feels and looks solid in my hand. The rubber duck antenna seems higher quality although I haven’t tested its performance.

One Radio, Three Modes: The firmware can be set to operate in three distinct configurations: Ham (transmit on 2m and 70cm ham bands only), GMRS (standard FCC Part 95 GMRS channels) and Normal (which is basically unlocked). You can easily switch between these modes but the memory information does get reset. So in most cases, you will need to reprogram the radio with your favorite frequencies after you change modes. The exception might be GMRS mode which will reset to standard GMRS channels. The flexibility of these three configurations is quite nice: The Ham configuration is great for normal ham operating with no risk of going “out of band.” I can loan out the radio in the GMRS configuration knowing that the user won’t inadvertently transmit on the ham bands. And, of course, the Normal mode provides access to a wide range of frequencies, to be used carefully, abiding by the relevant regulations.

USB-C Connectors: The radio battery has a USB-C connector for charging and a USB-C connector for programming (with Chirp or the TIDRADIO app). This may seem minor, but using a common industry-standard connector is a huge convenience factor. For example, I recently packed my gear for a trip and found that the USB cables I normally carry for my smartphone and tablet will handle the TD-H3 just fine. So there is no need for a drop-in cradle, extra charger or special programming cable.

Video Reviews

Apparently, TIDRADIO gave away a gazzillion radios to ham radio Youtubers and asked them to review the radio, so you’ll find many reviews out there. This one gives a good overview of the radio’s capabilities:

This radio is not quite the One Radio To Rule Them All, primarily because it won’t be convenient to switch between configurations. However, the radio is legal for GMRS and ham use, so that is definitely a plus. Will the FCC object to this kind of flexibility? Who knows, but they haven’t so far.

This video from KS6DAY shows how to switch between the three radio configurations:

Some Problems

Early on, several Youtube reviewers reported high spurious emissions coming from the radio. They fed this information back to TIDRADIO, who responded with a design change and some updated radios to test. They appear to have corrected this problem…the three radios in my possession tested out fine. There have also been some complaints about how a few features work and TIDRADIO has responded with a firmware upgrade to address those issues. So we can give TIDRADIO a good grade for responsiveness but poor marks for releasing a product that was not completely baked. Unfortunately, there are many videos in the etherwebz claiming the radio has problems and it is a challenge to sort through the actual situation today.

To become familiar with the radio, KS6DAY has a series of videos that explain how to use the radio. Lots of good information here:

Summary

As I mentioned, I have three of these radios and may be going back for more. For me, they fit the role of that “spare radio” that is kept in my vehicle, loaned out to other people, or just stored away for When All Else Fails.

73 Bob K0NR

The post TD-H3 VHF/UHF Radio appeared first on The KØNR Radio Site.

FCC Enforcement Actions

When teaching ham radio license classes, I often get asked whether the FCC enforces the Part 97 rules and regulations. That is, how likely is it that the FCC would come after me if I violate the rules? This same question surfaces concerning the General Mobile Radio Service (GMRS).

This morning, I looked at the FCC Enforcement Actions page, to see what’s there. First off, there are a ton of actions against unlicensed FM broadcast stations, in response to the PIRATE Act pass by Congress in 2020. There are also many actions against people operating RoboCall systems via telephone. If you find yourself bored, go ahead and read through these enforcement actions.

Here are some actions taken by the FCC concerning Amateur Radio and GMRS in the past few years:

In June 2022, the FCC sent a Notice of Violation to David Dean, K0PWO, concerning a continuous carrier signal on 7.033 MHz from a remote station near Fairplay, Colorado. I recall there being a ruckus about this incident in the ham radio community but I did not know it resulted in a Notice of Violation.

In June 2022, the FCC issued a Notice of Apparent Liability (FCC talk for “we are fining you”) of $34k to Jason Frawley, WA7CQ. The FCC says that Frawley used his ham radio to transmit on frequencies allocated and authorized for government use during the Johnson wildfire near Elk River, Idaho.

In November 2022, the FCC sent a Notice of Violation to David Dean, K0PWO. (This is the same person with the stuck transmitter in June 2022.) The FCC received a complaint from the State of Colorado that someone (later found to be Dean) had an illegally cloned radio transmitting on the State’s digital trunked radio system (DTRS) without authorization.

In June 2023, the FCC issued a Notice of Violation to Martin Anderson, GMRS WQQP653 in Vancouver, WA. This relates to a stuck transmitter, apparently due to a faulty transceiver at a repeater site. It transmitted continuous, unmodulated signals on the frequency of 462.725 MHz.

In August 2023, the FCC issued a Notice of Violation to Jonathan Gutierrez, GMRS license WRTD259 in response to a complaint of intentional interference to a 462.625 MHz repeater in Mt. Holly, Pennsylvania.

In August 2023, the FCC issued a Notice of Violation to Alarm Detection Systems, licensee of radio station WQSK406 in Louisville, Colorado. This is not ham or GMRS-related but involves a business band radio on 460 MHz. Apparently, the company continued to operate legacy “wideband” FM radios after the FCC required business band radio users to switch to “narrowband” radios (12.5 kHz channels). I found this interesting because it is an action related to the use of improper radio gear and emission type.

In May 2024, the FCC issued a Notice of Unlicensed Operation to Skydive Elsinore, LLC, a skydiving company in Lake Elsinore, CA. This company was transmitting in the 70 cm amateur band on 442.725 MHz without a proper license.

From these notices, we can see that the FCC does enforce amateur and GMRS rules, but not as often as we’d like to see. Usually, the situation has to be a big nuisance before it escalates enough for the FCC to take action. If you make a simple mistake once or twice, you are highly unlikely to be cited. If you are a more consistent or flagrant rule breaker, then you might get a visit from the FCC.

Remember that the ARRL has the Volunteer Monitor program, operating under a formal agreement with the FCC,  that can assist with on-the-air violations.

73 Bob K0NR

The post FCC Enforcement Actions appeared first on The KØNR Radio Site.

FRS3 For Colorado Backcountry

The Colorado Search and Rescue Association is promoting FRS (Family Radio Service) Channel 3 as “the default during backcountry search and rescue (backcountry SAR) emergencies.” FRS channel 3 is the same as GMRS (General Mobile Radio Service) channel 3. There is more GMRS info here. To keep things simple, no CTCSS (“privacy code”) is used…carrier squelch only.  See the CSAR announcement here: FRS Radio Use for Backcountry.

For backcountry exploring, it is important to emphasize self-sufficiency and to avoid reliance on electronic gizmos that may fail. Avoiding an emergency situation is way better than having a device to call for help, which may be many hours away. See this article for a discussion of The Ten Essentials for Hiking.

Still, the FRS3 concept has merit. Many backcountry hikers already carry FRS or GMRS radios, so designating a preferred channel makes sense. My read on this is that randomly calling for help on FRS3 will not be very effective due to the limited range of FRS radios. However, it does not hurt to try. More likely, FRS3 can be used for local comms once Search and Rescue crews have been deployed and are within a few miles of the party in distress.

Ham radio operators may want to carry a handheld transceiver capable of transmitting on 462.6125 MHz. For emergency use only, of course.

73 Bob K0NR

The post FRS3 For Colorado Backcountry appeared first on The KØNR Radio Site.

There are almost as many GMRS licenses as Techs…

At a recent local hamfest, my ARRL Section Manager, Malcolm W5XX, held the annual ARRL Forum. As Division Director David Norris K5UZ was giving his update on the recent Board of Directors meeting. W5XX commented that a club in North Georgia had begun reaching out to licensees of the General Mobile Radio Service (GMRS). Why? There are some 8,000 of them in surrounding counties! Give a statistician a number like that and it’s catnip to a cat.

I had heard of GMRS and the lighter-weight Family Radio Service (FRS) as additional radio frequencies to the famous Citizen’s Band (CB) that I used as a teen. But I didn’t really know much about it. So, I spent parts of a week doing some searching, reading, and, inevitably, database building. I saw the wisdom of the club in question reaching out to this audience. Let’s do a thought experiment to flesh this out.

GMRS licensees use radios up to 50 watts on mobile stations and 15 watts in fixed stations in the mid-400 mhz region. There are limitations on the type of one-way communications (no whistling which would rule out most anyone in amateur radio tuning up an amplifier, lol). But in general, there are parallels to GMRS operators to those holding a Technician license in the Amateur Radio Service with the latter having much greater frequency access, power usage, and other aspects of the radio arts.

The General Mobile Radio Service (GMRS) is a licensed radio service that uses channels around 462 MHz and 467 MHz. The most common use of GMRS channels is for short-distance, two-way voice communications using hand-held radios, mobile radios and repeater systems. In 2017, the FCC expanded GMRS to also allow short data messaging applications including text messaging and GPS location information.
FCC: https://www.fcc.gov/wireless/bureau-divisions/mobility-division/general-mobile-radio-service-gmrs

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After doing some reading, I checked the FCC ULS GMRS license data. There’s an interesting comparison: the ARRL February 2023 numbers show 386,122 Technicians while individual GMRS licenses total 336, 513 after APO addresses and one Canadian are removed. Organizations and some other groups can obtain GMRS licenses. Roughly, there are about as many individual GMRS licensees as there are Technicians, give or take 50,000. Ok, I thought, this is surprising but how do they operate? Are they communicating amongst themselves as ham operators do? How many GMRS repeaters are there? The surprises just kept on coming!

The popular site, RepeaterBook.com, does list some GMRS repeaters. But the mother ship is the myGMRS.com website. One has to have a GMRS license to register but there ‘s enough information available to the public to show just how organized parts of the GMRS community already is. I’ve taken a screenshot of the map display, nicely done with clustering repeaters until a certain zoom level is reached, showing the GMRS repeaters in the U.S. Note those in Puerto Rico: I had recommended that the ARRL assist in getting a permanent repeater on the westernmost mountains near Mayaguez after a devastating hurricane. Perhaps even an HF ALE type station directed at Florida or North Carolina. Looks like the GMRS community has done some work here, too.

The map below illustrates the set of repeater hubs and their links around the U.S. There are national and regional Nets held regularly. An audio stream can be monitored using the website for each hub, not unlike Hoseline for the Brandmeister DMR Network. Hmm. If ham radio were only this organized, so quickly.

Linked Repeaters from the myGMRS.com website illustrating hubs and links around the U.S.

After downloading the February 2023 GMRS data from the FCC ULS ftp site, I processed it and filtered out the overseas military licenses. These records were then georeferenced to street addresses, with some that did not have street addresses geocoded to zip codes and a few to city centroids. The map below illustrates this: the GMRS individual license IS a compelling market for amateur radio recruitment.

It’s easy to see that the North Georgia region is part of the Appalachian Mountain range that is covered with GMRS licensees But so is most of the region east of the Mississippi River, the West Coast and the mountainous areas of the Southwest. Here’s another view zoomed in to the ARRL Delta Division where I live. Licensees in GMRS tend to follow population centers but note the areas, like Nashville, where the topography gives more height-above-ground than others. Northwest Arkansas is another such location. Interesting patterns!

We know little to nothing about the age distribution of GMRS licensees as year of birth is not contained in the ULS database released to the public (only 18 or over). But it stands to reason that GMRS licensees are likely to have a broader age range of adoption. From perusing the names on the licenses — license holders can authorize other family members to use additional radios in this Service — there are gendered-naming patterns. More women in GMRS than ham radio? Possibly.

Some interactive maps of these data are now available over at FoxMikeHotel.com under the Maps tab.

An important note is that an unknown number of those holding GMRS licenses today also hold licenses in the Amateur Radio Service. The FRN is not contained in the GMRS data so it would take “fuzzy matching” with less than perfect results to examine this idea.

Should the GMRS licensees be viewed as another direct marketing opportunity by the ARRL?

Only if they are serious about wanting to grow the ranks of amateur radio…

The ARRL has taken an interest in my proposed initiative to treat public libraries in the U.S. as “new served agencies” for recruitment strategies, according to Division Director David Norris K5UZ. See my two blog posts here and here. Should the GMRS licensees be viewed as another direct marketing opportunity by the ARRL?

I’ve taken the GMRS data and spatially joined the ARRL Division and Section fields to the license record using GIS. These files were then split into separate spreadsheets by Division with the Section as a separate field. I’ve put them on my public folder in Dropbox for all to retrieve should they desire. This would make it easy for a direct-mailing to GMRS licensees. In a cover letter identifying the contact info for their ARRL Section Manager, a brochure should be inserted describing the much greater options available by adding the Technician license through a VE exam. It works for some yield rates for other membership services. (Check today’s mail if you doubt this isn’t used frequently.)

Click HERE for the Dropbox folder.

It would not be inexpensive with USPS rates. But it would be directed at a market that is already known to have some interested in operating radios for communication. Perhaps it should begin with GMRS licensees in areas where there are existing repeater operations. This would be a good test case to see the yield from such a direct mailing.

What won’t work is to simply send the information “down stream,” expecting SMs to do all the heavy lifting. It simply won’t happen. The League already conducts a commercial mailing operation which is where this activity should be situated.

This would be a third recruiting rail for the ARRL, including the Teacher Institute (getting in schools), the pending (I’m told) Plant the Seed initiative for public libraries, and the direct mailing to known radio communication licensees in the GMRS arena. Recruit the Generals, anyone?

One Radio To Rule Them All (Ham, GMRS, FRS, MURS)?

The common Baofeng UV-5R can transmit and receive on a wide range of frequencies…but not necessarily within FCC rules.

From time to time, the question is raised about using radio equipment in multiple radio services. One common example is a licensed radio amateur that wants one radio to cover the Family Radio Service (FRS), General Mobile Radio Service (GMRS), and the 2m/70cm ham bands. Some people also want the Multi-Use Radio Service (MURS)…or maybe even marine VHF or aircraft VHF. The thinking goes that if one radio can transmit and receive on all these frequencies and that person is authorized to use those frequencies, then one radio can do it all.

This seems like a reasonable objective but the problem is that the FCC has a few rules and regulations that come into play.  This leads to an important note: I am writing about the FCC rules and regs here…you may choose to ignore them but that’s on you.

Part 97: Amateur Radio Service

First, the good news. The Amateur Radio Service, governed by FCC Part 97, has very few restrictions on the type of equipment you can use. Heck,  you can build a transceiver from parts and put it on the air. So the ham rules are not going to be a major limitation.

Part 95: FRS, GMRS and MURS

FRS, GMRS, and MURS radios are governed by FCC Part 95.  Section 95.591 says this about FRS radios:

§ 95.591 Sales of FRS combination radios prohibited.

Effective September 30, 2019, no person shall sell or offer for sale hand-held portable radio equipment capable of operating under this subpart (FRS) and under any other licensed or licensed-by-rule radio services in this chapter (devices may be authorized under this subpart with part 15 unlicensed equipment authorizations).

Section 95.1761 says this about GMRS transmitters:

(c) No GMRS transmitter will be certified for use in the GMRS if it is equipped with a frequency capability not listed in § 95.1763, unless such transmitter is also certified for use in another radio service for which the frequency is authorized and for which certification is also required. No GMRS transmitter will be certified for use in the GMRS if it is equipped with the capabilities to operate in services that do not require equipment certification, such as the Amateur Radio Service. All frequency determining circuitry (including crystals) and programming controls in each GMRS transmitter must be internal to the transmitter and must not be accessible from the exterior of the transmitter operating panel or from the exterior of the transmitter enclosure.

(d) Effective December 27, 2017, the Commission will no longer issue a grant of equipment authorization for hand-held portable unit transmitter types under both this subpart (GMRS) and subpart B of this part (FRS).

The Midland MXT400 is a typical GMRS mobile transceiver.

Similarly, MURS radios have this restriction (Part 95.2761):

(c) A grant of equipment certification will not be issued for MURS transmitters capable of operating under both this subpart (MURS) and under any other subparts of this chapter (except part 15).

The FCC is saying (requiring) that FRS, GMRS and MURS radios must work on their designated frequencies and nothing else. At one time, it was legal to sell a combination FRS/GMRS radio but the FCC has specifically removed that option. Part 95.1761 seems to leave an opening for a GMRS radio that is also certified for use in another radio service, but that is a very thin opening and it specifically excludes the Amateur Radio Service.

Now, why would the FCC put these restrictions in the regulations? The answer is pretty simple: these radio services are intended to be used by everyday, non-technical folks. The radios need to be simple to use and not include the capability to wander off onto any old frequency. Hence, the rules lock down the frequencies that the radios can use.

(As a side note, this regulatory approach is good for amateur radio. Imagine if FRS radios had Channel 30 set up to transmit on 146.52 MHz, with a note in the manual that says “only use this channel if you have an amateur radio license.” We would have a crapton of unlicensed operating on 2 meters.)

Part 90: Private Land Mobile Radio Services

Part 90 regulates a broad range of land mobile radio, including public service, police/fire, search and rescue, forestry, utilities, and businesses. Licensing is very specific under Part 90. A radio license will specify a particular set of frequencies allowed, specific power levels and emission types, and even the allowed operating location of the radios.

Radios designed for Part 90 are usually programmed by a radio tech to operate only those specific frequencies that a licensee is authorized to use. This results in a relatively simple operating set up with the user just selecting from the preset channels on the radio. Part 90 radios normally cover a wide range of frequencies so that the manufacturer and the radio shop can sell one radio model to any licensed user.

In many cases, these Part 90 radios cover the adjacent amateur bands, such as 2m and 70cm. (For example, the Anytone AT-D878UV is Part 90 certified and covers 140-174 MHz and 400-480 MHz.)   So this does open up the possibility of using a Part 90 radio under a Part 90 license and using it on the ham bands. A typical scenario is when a Search and Rescue member has a Part 90 radio set up to use the S&R frequency as well as the 2m/70cm amateur bands. The key to this is starting with a radio that is Part 90 certified and then programming it for the amateur band.  Of course, you need to be authorized to use the Part 90 frequency and have an amateur radio license.

Getting Creative on Radio Configuration

A few years ago, Anytone Tech tried to market the TERMN-8R VHF/UHF radio as legal for the ham bands, GMRS, MURS and Part 90 use.  An early review of this radio is here on the PD0AC blog. Basically, the radio had three distinct operating modes: GMRS, MURS, and Commercial/Normal. Initially, the FCC approved the radio but later took a closer look and canceled the authorization. The TERMN-8R is still available but without the three modes. It is marketed as a Part 90 radio that also does the amateur bands.

The Anytone TERMN-8R handheld transceiver.

I recently became aware of the Anytone AT-779UV which is sold in the USA as a Part 95 GMRS radio. However, using the programming software, the radio can be configured to cover the 2m and 70cm amateur bands or a much broader range of frequencies (136-174 & 400-470 MHz). If you change the radio configuration to operate on the ham bands (or wider), the radio is no longer Part 95 certified. The configuration via software takes some knowledge and effort so it is not a mode that you can easily switch back and forth. It is really no different than other software-programmable radios.

 

 

 

Wrap It Up

So there you go, your dream of One Radio To Rule Them All (FRS, GMRS, MURS, and the 2m/70cm ham bands) is not going to happen. At least not legally. You can configure a radio to do this…but it will not meet FCC regulations.  However, you can configure a Part 90 radio to operate legally on Part 90 frequencies and on the amateur bands.

The post One Radio To Rule Them All (Ham, GMRS, FRS, MURS)? appeared first on The KØNR Radio Site.

How About A Mic-Centric Mobile Transceiver?

Most automobiles don’t provide a lot of room for mounting ham radio transceivers. (Obviously, their design priorities are wrong!) Because of this, many ham transceivers have removable control panels that can be mounted on the dashboard and the main radio is installed somewhere else, such as under a seat.

Midland radio is doing some interesting things with micro-sized radios for the General Mobile Radio Service (GMRS). The MXT275 MicroMobile® Two-Way Radio puts all of the radio controls and the display in the handheld microphone.

The Midland MXT275 MicroMobile® Two-Way Radio has all of the controls and display in the microphone.

Yaesu FT-8500

This radio reminded me of an old Yaesu radio, the FT-8500, which had almost all of the controls crammed onto the microphone. (Someone named the microphone “Mr. Potatohead” which seems appropriate, but I did not name it.) This radio had the display on the radio body, which seems like a limitation. At any rate, this rig was not very popular. I do not know anyone that owned one.

The Yaesu FT-8500 had almost all of the radio controls crammed onto the microphone.

So the FT-8500 was not a big hit but maybe it is time for another go at a microphone-centric transceiver. I am thinking a basic 2m/70 cm FM radio could use this approach to ease the mobile installation challenge.

Simplicity in Design

You may be thinking that a GMRS radio is fundamentally simpler than a typical VHF/UHF ham transceiver.  This is true…a typical GMRS radio has 22 channels that might have options such as CTCSS tones and repeater offset. A typical ham transceiver has more frequencies, more features, and lots of settings required.

However, if you consider the typical FM transceiver setup and usage, most people set up the memories for the repeater and simplex channels they use, usually via programming software. After that, operating the radio is 99% just selecting the desired memory channel. This kind of usage lends itself to having a simpler set of controls that can be incorporated into the microphone. This approach will require a good understanding of user needs and some careful design work to create a radio that works well.

This type of radio design will probably not work for everyone. There will be hams that want every feature available all of the time.  That’s just fine. However, the microphone-centric approach may be a good fit for installation in the “other car” that doesn’t get used quite so much. Or in the case where a family member objects to having a Real Radio cluttering up the dashboard.

Using this type of radio will be a lot like using a handheld transceiver, with the addition of a microphone cable,  but no batteries or antenna cable drooping down. The Midland radio has the speaker in the radio unit but it may be better to put it in the microphone (with the option of plugging in an external speaker.)

I think this idea would well for some number of mobile radio installations. What do you think?

73 Bob K0NR

The post How About A Mic-Centric Mobile Transceiver? appeared first on The KØNR Radio Site.


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