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Fixed it for you: 亲爱的宝峰： 我看到不久前你们推出了新的GMRS HT（UV-5G Plus）。它看起来是一个相当不错的升级，但我认为您再次错过了将一个非常好的收音机变成一个非常好的收音机的机会。我的抱怨完全在于菜单系统。 1. 为什么我们无法在菜单系统中更改/输入频道名称？ 2. 为什么菜单系统中不能设置某个频道是否可以扫描？ 宝峰，我认为如果你解决了这两件事，你的收音机的价值/质量矩阵就会上升一个档次。 我真的很想买这台收音机来添加到我的收藏中，但我不想让自己感到沮丧。 感谢您的聆听。 WRPL700

The best mobile/base radio will not work well with subpar coax and/or subpar antenna. It's hard to beat LMR400 or equivalent coax for VHF/UHF frequencies.

Just as a side note I read why it's a reverse phase. The old equipment used a vibrating reed as a filter to open the squelch. This was a mechanical filter basically. The reed was "tuned" to the desired PL frequency. When the transmission stopped it took a bit of time for the reed to stop vibrating and the squelch to close. The reverse phase, same PL frequency, was sent at the end of the transmission which bucked the reed's vibration which quickly cased it to damp out and stop. Thus the squelch would close faster mostly eliminating the squelch tail.

And those two frequencies are also outside of the 70cm amateur band. The 70cm band is 420.000 MHz to 450.000 MHz.

Not the entire range. The FCC has identified four sets of specific channels. 30 in all on frequencies in the 462 MHz range and the 467 MHz range. 463-466 MHz are not GMRS. We stay to those channels and we don’t get to twist our VFO knob and pick a clear frequency wherever we want. Channels 15-22 are used for simplex communications, where people transmit directly to each other, taking turn transmitting and receiving on a single frequency. If you add exactly 5 MHz to each of the 15-22 channels, you get the frequencies used for channels 23-30. So, 462.550 MHz becomes 467.550 MHz. Channels 23-30 are used to transmit to a repeater. Generally speaking that’s almost the only traffic on these channels: to the repeater. Then, the repeater generally transmits on the corresponding channel in the 15-22 range. So, channels 15-22 are shared between simplex communications and transmissions from repeaters. The fact that these are shared and limited to these eight channels is one of the shortcomings of GMRS.

Hello all. I am a new member here. I live in Central PA, am a life-long scanner enthusiast and recently decided to branch out into GMRS. I just got my license and am waiting on my new radio. I opted for a cheaper one to start out...a Radioddity GM-30. I'm hoping to be able to hit a repeater or two from where I live. I just wanted to drop by and say hello. Dave G. (WSAS749)

Here’s a snippet of the spectrum chart. Unfortunately it doesn’t really help much: Here’s the chart in full:

Thank you Steve, that all makes sense! That also helps refine and reinforce some of my understandings about picking up repeaters, talk-around, etc… I appreciate the info!

Height is might provided you have decent feedline. After that will be a good antenna. High gain for flatter areas, lower gain for hilly (usually). Directional (Yagi) for talking in THAT direction, and a little behind and the sides.

Much easier to carry the instruction manual instead.

I have and do use software, because I have to. Not so handy if I am out away from the computer. This discussion was aimed at what seemingly simple things could be added to make it better. So we don't have to use software when it isn't handy.

Perfect. Do you have the address???

It doesn't really serve a useful purpose in GMRS without the special equipment, but does identify one as a Motorola radio user much like the white strip down the back of a sunk.

That's likely true. Myself I don't know of any. Those repeater owners that use MDC1200 tend to get labeled as Motorola snobs since that company originally had the patent on the signaling method. It mostly limited the repeater access to users with Motorola radios.

The short answer is, "There are no currently-produced 'certified' GMRS radios that have MDC1200". Would you not agree?

If the squelch tone was sent continuously during the transmission, reed stays sync'd, by inverting the signal at the end would generate a 180 phase shift bucking the original one. How it's done now I don't know. Everything is done by micro's now with the magic in the software.

That thought entered my head as well then I thought it would probably be a lot harder to hit it dead on and keep it going that to be off a little and dampen it. PS I'm no sound engineer, but I do play one on TV.

@back4more70 I can't believe I'm out of reactions again! I've got to come back to this one!

Back in the 1960's, a lot of old Motorola, GE, and similar land mobile radios had a squelch tail, which was about a half-second of open squelch (white noise) you heard when a received station quit transmitting, before the squelch closed and silenced the receiver. As a kid, I always enjoyed the traffic and squelch tails when the city cop with a (then) new Motorola HT-200 came in the drug store with his radio blaring. Even now, in my old age, I enjoy the sound of the squelch tails on ham, GMRS, commercial, etc, FM radio systems. As then, it let you know that the transmission of the receive station ended. Somewhere along the line, land mobile radio companies decided that the squelch tail was annoying and should be eliminated. Various technical solutions were employed to make the squelch tail go away, to include Motorola's "reverse burst" which inverted or otherwise altered the PL tone for a split second when a transmitter unkeyed. Over time, mainly on ham, then later FRS and GMRS, plus land mobile, radio companies added the "courtesy tone" or as CB'ers called it the roger beep, to let people know a transmission had ended. We went full circle, from eliminating a naturally occurring cue that a received station had ceased transmitting, to creating a beep or other tone to do the same, generated internally by the radio. Some ham, land mobile, and GMRS, radios have settings that enhance the probability that the radio will create a squelch tail while transmitting (or receiving). I usually have those settings adjusted to do so on my radios. I always wondered how popular a "courtesy tone" setting (transmit and/or receive) would be that sounded like a squelch tail, if manufacturers included that as an option, along with the more well known beeps.

A GMRS radio is "certified", the new term, under Part 95E. There are some older commercial radios that have Part 95 certification and are legal to use so long as they are programmed with the correct frequencies, bandwidth and power. One such example is attached. The radio is both analog FM and digital enabled for P25 Phase 1, however digital is not allowed under current FCC GMRS rules so that part can't be used. Other than that the analog section is just fine, and as you can see in the brochure it does MDC1200. You can verify the certification by looking at the bottom of the brochure for they type one UHF radio and referencing the FCC ID. Then compare it to the one in the FCC grant. Part 95A was the GMRS rules section before the FCC reorganized Part 95 in 2017. The radio still retains it's certification. I personally have a few of these radios in my collection. TK-5220_5320 Brochure - 1.pdf TK-5320 FCC Grant - 1.pdf

The narrow band won't help with spectrum efficiency unless the FCC was going to add more channels to GMRS, which likely won't happen. The channel interference part is beneficial. There are some interstitial channels that can cause interference to the adjacent main channels. If all of the channels were made narrow band the guard band between them would be greater. The down side to narrow band is the range reduction. Many Part 90 users found that out quickly when the FCC mandated narrow band for that service group. Be careful what you wish for.

CW is not permitted. Morse code is allowed when identifying, but it’s just tones on FM. Transmissions are only allowed on the channels established by the FCC in part 95e. Therefore they are not authorized between the channels. Neither of the frequencies you mentioned are approved for GMRS. Also, users must observe the rules regarding bandwidth and power output. I’ll paste the section that establishes the individual channels by frequency, but for the other limitations you should really visit the regulations. https://www.ecfr.gov/current/title-47/chapter-I/subchapter-D/part-95/subpart-E § 95.1763 GMRS channels. The GMRS is allotted 30 channels—16 main channels and 14 interstitial channels. GMRS stations may transmit on any of the channels as indicated below. (a) 462 MHz main channels. Only mobile, hand-held portable, repeater, base and fixed stations may transmit on these 8 channels. The channel center frequencies are: 462.5500, 462.5750, 462.6000, 462.6250, 462.6500, 462.6750, 462.7000, and 462.7250 MHz. (b) 462 MHz interstitial channels. Only mobile, hand-held portable and base stations may transmit on these 7 channels. The channel center frequencies are: 462.5625, 462.5875, 462.6125, 462.6375, 462.6625, 462.6875, and 462.7125 MHz. (c) 467 MHz main channels. Only mobile, hand-held portable, control and fixed stations may transmit on these 8 channels. Mobile, hand-held portable and control stations may transmit on these channels only when communicating through a repeater station or making brief test transmissions in accordance with § 95.319(c). The channel center frequencies are: 467.5500, 467.5750, 467.6000, 467.6250, 467.6500, 467.6750, 467.7000, and 467.7250 MHz. (d) 467 MHz interstitial channels. Only hand-held portable units may transmit on these 7 channels. The channel center frequencies are: 467.5625, 467.5875, 467.6125, 467.6375, 467.6625, 467.6875, and 467.7125 MHz.

I was in favor of linked repeaters for a while, but with only 8 frequency pairs, I vote no.

Interesting. Which GMRS type-accepted radios do MDC1200?

The DTR600 is a 30 Channel radio and the DTR700 is a 50 channel radio. I finally received my DTR700 radio and I was impressed with the performance in distance and the audio quality of the DTR700 radio. I was able to receive an user with a DLR1060 radio about 2 miles away. Last weekend I was using a remote speaker mic with an earpiece and sometimes a dual-muff boom mic headset with an in-line PT-T switch and they worked perfectly. I am able to use my headsets with both the XTS5000 radios and the DTR700 radios by switching out the adapter cables.

C'mon, Roger Beeps are like naked people lurking in the shadows as you travel down the highway. You never get to see a pretty one and only the ugly, un-interesting parts are exposed! And they cause the same people to scream at a volume and tone that no one listening wants to endure for even a minute.

Hello and welcome! Most mobile antenna's require a ground plane such as the metal of a car body to work properly. If it's a magnet mount you can place it on a cookie sheet or pizza pan which will provide a ground plane. You will get better performance outside the house and as high as you can get it. Same with the handheld. UHF (GMRS) is mainly line of sight. The more stuff the signal has to penetrate the weaker it will be and the shorter your range.

What make and model is the antenna, and what kind of radio? I'm thinking you have some kind of mobile radio installed in the car with the mobile antenna? Or are you using the handheld in the car with the mobile antenna connected?

Quite a few of us in my local club have both licenses. And whenever any of us give the wrong call sign, the rest will give the guy trouble (in fun).

If you have both licenses it’s easy enough to accidentally use the wrong call sign. I also have made this mistake before especially talking with a friend who has both licenses also and both a ham repeater and a GMRS repeater in between us. This usually is followed by razing the other for the faux pas.

I'd say, GMRS isn't a ham facsimile. I know that a ton of people on it seem to really want to treat it as such, but it isn't what it's for. It's closer to FRS. It's aim is to be a utility/domestic/family service. That's why the call isn't for an individual, but a household. It's for house:main radio, family cars:mobile and some handhelds for ski trips. Nobody constantly yelling out call signs and whatnot.. But, it's a novel radio service that attracted the ham nerds who took liberties with the 8 repeater channels and here we are.

Glad to see that “Advertising Law School“ is making a difference.

are there any other radios nearby? Is it a 'screech' or is it a tone of some kind, like an error tone/noise/sound? Either way, doing a full reset should unscrew whatever you did if it comes to that..

More like the "Super Bowl" on channel 6.

All depends on how it's done and presented to the FCC. For years they said no to FM on 11M CB. Then one day, POOF, they said OK. While there is a crowd who don't like the idea that may become moot. In some areas digital voice modes are already in use, very much in violation of FCC regulations. If it becomes further widely practiced, like the mess with combo FRS/GMRS radios and people ignoring the license requirements, they will just throw in the towel, again, and make it legal. Saves them time, man power and money so they don't have to deal with the enforcement issues. That's basically what they did with the FRS/GMRS rule revisions in 2017. Just made what people were doing legal, then ignored the service.

LMR 400 for 35' feet. RG58 - Loss per 100 - 10.6db LMR400 - Loss per 100 - 2.7 So at 35' of RG58 you are loosing almost 4db which is over 50% of signal loss and power.

I just got my first set of radios and while I can program them on the radio it would be nice to be able to use a CPS. I have a MacBook and tried using chirp but the UV-5G plus is not an option yet. Is there any other CPS I could use?

Careful.. This kind of talk will make 'some people' cry and bang on their keyboards in teeth-gnashing fits of rage.

Although we ID as required, my wife is "Fortune Cookie" because she is of (mostly) Asian heritage, and I am "Stink Bug" because I don't smell so good...

Just be careful.....Roger beeps are "good buddy beeps" to truck drivers. You may find yourself the recipient of an invite to a rest area men's room for a romantic interlude [emoji16] Sent from my SM-A125U using Tapatalk

I have looked myself (at the last 10 years of enforcement), thats why I dont trust what you're saying.

Not that I dont trust you, or think you're making stuff up out of thin air, but i would love for you to share some actual facts about all these others this has happened to. Perhaps a link to the FCC enforcement database entry? Because as I'm sure you know, every time the FCC breathes down anyones neck, for any reason, by law, the FCC must publish that enforcement.

This is a new topic for me: could you please explain to me how someone else using foul language on his son's FRS radio puts your FCC licenses at risk?!?