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I noticed this as well on a H8 Gen 3 when I programmed the tone manually on the radio.

I'm very new to radio and just recently picked up a pair of H8 Gen 3s and a pair of H8 Gen 2s (bought their "mystery box" H8 offer). I've done a little bit of programming with ODmaster via bluetooth. Data cable came yesterday, so now I can mess with CHIRP and firmware. I'm tempted to experiment with Nicsure firmware, or any other custom firmware that might be out for these. Its been a fun learning experience so far.

How can I turn off the start up music when radio is turned on - or at least lower the volume without lowering receiver volume when the radio is in use. BTECH GMRS-50V2

Update on 33cm/900MHz. I now have 2 of these radios and while they do seem to TX on that Frequency there's no RX on either. Not sure if it's a firmware issue(since there is newer firmware out for them) or what but all the other Frequencies work just fine.

i've noticed that too.. A year ago you could buy retired used Commercial radio stuff on Ebay cheap cheap.. I was lucky and got a few things including a couple high end Hytera Repeaters, one of them brand new. Now, the used commercial stuff is going for high dollar premiums and the junk left over from then..

I do want to make a correction. 33cm/900MHz does seem to TX but there's no RX as I now have 2 of these radios and can't get them to RX on 33cm even with the proper antenna. I can TX and RX on CB, 6M, 2M, 1.25M and 70cm along with MURS and GMRS without any problems. Despite with the website says they WILL TX/RX on more frequencies than listed if they're set to "Super Mode", I know for a fact because I've done it. The website is probably listing what will TX/RX on "Normal" range. P.S. They also do RX only on Airband, FM Broadcast and NOAA Weather Radio.

According To Radtel's Website - Your Vid Info Is Incorrect. The RT-900 Will Only RX/TX On 136 To 260 MHz & 330 To 520 MHz. All Other Bands Are RX Only. See Site Link Below: https://www.radtels.com/products/radtel-rt-900-10w-full-band-ham-radio-walkie-talkie-256ch-air-band-two-way-radio-station-aviation-noaa-police-marine-river-ptt?variant=44343562469584

For those that welcome this just keep in mind that you're cheap Baofeng won't work for that. I tried searching the ol ebay for any used radios and found a few that are not cheap. And now you would need a separate antenna. Sent from my SM-S938U using Tapatalk

I know the older model can. See attached files for more info on the radios. D878UV Maintenance Mode Password.pdf AT-D868_D878 Info and mods 20240607.pdf

I would say it was a good investment if you need or want inexpensive and reliable short range comms. You can 100% use your radio as you would like, but may need to do things like use Tone squelch to stop hearing unwanted traffic and/or timing use between active conversations or the higher frequencies, which is common/best practice anyway. The congregation will make it a bit more cumbersome to accomplish, but still usable. Adding a repeater that would be usable would be way more complex to accomplish.

Mike already identified many frequencies that are in unused sections of spectrum with zero active licenses nor tech that would use the space. So, there is no one nor any company with valid grounds (standing) to contest the reallocation of the frequencies.

Meanwhile. the price of coffee, at least what i spend, can buy 6 of those big box platform radios. But i prefer to save for 6 months and buy the bigger bigger box platform.. I'll take a Hytera please.

I do know and have experience with lowband VHF with FM emissions skipping from California in an easterly direction, just to name a few states, Wyoming, Missouri, Illinois, Indiana, Ohio, and North Carolina.

Go with real life over calculated.

I already searched the forums and didn't find the answer I was looking for. I recently purchased an Anytone AT-878UVii and I noticed that the box now states the factory frequency range on the UHF side is from 420-450mhz. I know the earlier units with the same model number were listed on the box from 400-490mhz. Is this the same unit as they were before, and still capable of being opened up to transmit and receive "out of band"? I am thinking the packaging has simply been updated for US sales. Has anyone unlocked a recently manufactured unit with the 420-450mhz range listed on the box? Thank you in advance! -Adam

Where will the Lowband VHF freqs come from? I doubt that the FCC will entertain any proposal at this time and I'm pretty sure that APCO will put up a great fight to keep the Public Safety freqs for Public Safety use for several more years, or maybe a decade or two more, until everyone has migrated off the lowband VHF spectrum. Look how long it took to get the TV Broadcasters off of TV Channels 14-20 for public safety use in the T-Band in the large metropolitan cities/regions throughout the country; and then there was refarming of the UHF spectrum; getting public safety to change to narrowband missions; let alone getting Nextel to give up the 800 MHz spectrum for public safety use after getting public safety to give up the 2.1 GHz spectrum. As the Queen stated, nothing will happen relatively soon and I suspect not less than 10 years, at the minimum.

See my video on the RT-900 in the Equipment Review section on the Forum. At 2M and 70cm I'm able to hit a Repeater on the White Tank Mts. at over 20 Miles away with a 3" antenna from a Suburban Area with trees, houses, etc. I'm sure this radio will work well enough for folks to dip their toe into other Bands to see if they want to invest more in a "Higher End" radio but for me on my tight budget this one will be just fine.

Been wanting something to play on the 6M and 33cm/900MHz bands and found this radio. The Radtel RT-900 will actually do 18MHz to 999MHz when put on "Super Mode" and with the proper antenna tuned for the right frequency just may be the ticket for a low cost HT to mess around on Multi-Bands. Enjoy the video and thanks for watching. TN.Frank Out. Correction on 33cm/90MHz. They appear to TX but I can't get RX even with a proper antenna so they don't seem to work on 33cm.

My first two (2-pack kit) were fine (anecdotally, even better reception once I got a couple Nagoya 701g 5.5in antennas for them). I just ordered a third one (plus another Nagoya 5.5in) - here's to hoping..

I applied the Carson bandwidth rule earlier using 2.7 kHz as the upper limit for audio frequency response and 2 kHz as the deviation. That yields a CBR of 9.4 kHz which exceeds the regulatory limit of 8 kHz. Then I stumbled across a discussion about this new Super Narrow Band FM. Another interesting several minutes. But I’m still curious about how the two modes actually measure on test equipment. Ken said that he actually got more usable range from FM. Kirk says that AM will definitely travel further because it’s narrower bandwidth.

The relevant sections are: https://www.law.cornell.edu/cfr/text/47/95.971 https://www.ecfr.gov/current/title-47/chapter-I/subchapter-D/part-95/subpart-D/section-95.973 https://www.ecfr.gov/current/title-47/chapter-I/subchapter-D/part-95/subpart-D/section-95.975 https://en.wikipedia.org/wiki/Carson_bandwidth_rule

I'm waiting for something to compile so I tried it. 9V batteries are spicier.

... When the price of a handheld radio from [big-box-platform] is less than a three-pack of Don Francisco's coffee now-a-days... licking the handheld's battery leads may be a cheaper pick-me-up in the mornings*. (* prolly' shouldn't try that if my childhood experiences with 9-volt batteries are any indication )

Thanks so much for the replies. Please feel free to point me to any stickies or threads that might teach me more about how this network might degrade my GMRS experience on the higher power channels when transmitting simplex. I am worried now that my investment was bad. Now back to your regularly scheduled FCC Rule discussion...

Unless you're a superbowl-er. Their AM transmissions require the bandwidth of three CB channels.