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38 votes

On which of these frequencies can I transmit without a license?

None of them. You say you are in the United States. In general, all radio transmissions fall into one of three categories: The operator is allowed to transmit on that frequency (amateur, "business ...
Kevin Reid AG6YO's user avatar
  • 24.6k
22 votes

Are Baofeng radios illegal in the U.S?

2023 Update: Since I wrote this answer, there's been quite a bit of FCC enforcement (on importers, not amateurs), and as a result, most new Baofeng radios sold for amateur use in the US in the past ...
hobbs - KC2G's user avatar
  • 12.5k
19 votes
Accepted

Are Baofeng radios illegal in the U.S?

They are legal to use, but only on the amateur bands. (Of course, you'll need to get a license first). There was a lot of debate on whether they were legal, but the FCC finally stated that they were. ...
Mike Waters's user avatar
  • 8,023
15 votes

How do PTT buttons work?

The basic PTT (push to talk) button on the HT is a simple switch that is normally open and when it is pressed, the switch is closed (conducting). Internally to the radio, this applies power to the PA (...
Glenn W9IQ's user avatar
  • 18.6k
13 votes

How can I avoid accidentally transmitting with a Baofeng UV-5R?

If you haven't seen them, the RTL-SDR dongles are really hard to beat for scanning. They let you see a waterfall display so that you can see visually which frequencies are active. It's wonderful!
William's user avatar
  • 803
13 votes
Accepted

What is the appropriate length of an antenna for a handheld on 2 meters?

These antennas don't always contain a simple straight length of conductor, but rather usually have coils of wire inside, so the actual physical length doesn't mean that much. They are designed so that ...
Andrew's user avatar
  • 3,683
12 votes
Accepted

Can a Baofeng UV5R receive airport radio transmissions?

As far as I've read, all Baofeng radios do FM only. The majority of aircraft communications uses AM, so whether or not it can be tuned there, you would not hear the audio, just approximate silence (...
Kevin Reid AG6YO's user avatar
  • 24.6k
11 votes

Can a Baofeng UV-5R Display Both Name and Frequency Simultaneously?

Yes, kind of. You can program the A and B settings separately. Set channel A to display name, and set B to display frequency. Also, set the receiver to only listen to the monitored channel to ensure ...
SandPiper's user avatar
  • 777
10 votes
Accepted

How much current can Baofeng UV-5R provide on +V pin?

With no load, I measure 3.17V With 100kΩ load, 2.91V With 10kΩ load, 1.59V With 1kΩ load, 0.29V The math works out to a 10kΩ series resistance between +V and ground. As such the maximum power that ...
Evan Krall's user avatar
9 votes
Accepted

Can a Baofeng UV-5R Display Both Name and Frequency Simultaneously?

No, you cannot display "Name & Frequency" if the unit is in "Channel Mode". what you could do is program (part of) the frequency in the "Name field" of the channel. This way it helps you, like a ...
Edwin van Mierlo's user avatar
9 votes

Baofeng UV 9R Handheld programming

Almost nobody programs Baofeng and similar radios by hand: too difficult, as you discovered. The thing to do is to get your hands on a programming cable and programming software. If you go to a ...
rclocher3's user avatar
  • 9,242
9 votes

Beginner listening to a repeater - only hearing one station

It is presumed that you were receiving on the 2m band. It appears that you were listening in, using 'repeater reverse' mode. In other words, you were listening in on the repeater's input frequency ...
vu2nan's user avatar
  • 757
8 votes
Accepted

How to make a PTT button for Baofeng UV-5R

You want your switch to short the shield of each of the connectors to each other, strange as that sounds. These plugs are commonly known as TRS, or tip-ring-shield, so the shield is the part closest ...
MoTLD's user avatar
  • 736
8 votes

How much current can Baofeng UV-5R provide on +V pin?

I would first measure the current draw of your ESP32 to rule out a fault there. The +V pin on the Baofeng microphone connection is probably intended to bias an electret microphone. These are ...
Phil Frost - W8II's user avatar
8 votes

programming Pofung UV-82

Commercially-sold radios that transmit for nearly every purpose other than the amateur service (Part 97) and Industrial, Scientific, and Medical (ISM) equipment (Part 18) in the US must be type-...
rclocher3's user avatar
  • 9,242
8 votes

Why do Baofeng radios have such poor reception reliability?

You get what you pay for. The Baofeng radios take a number of shortcuts in their design to make them cheaper, including leaving out front end filters. The result is that the radio is marginal on ...
user10489's user avatar
  • 6,455
7 votes

How can I avoid accidentally transmitting with a Baofeng UV-5R?

Chirp can only disable Transmitting on pre-programmed memory frequencies, if you select the vfo it will still transmit. Searching Google for 'uv5r transmit inhibit' yielded this on the fifth hit ...
Tony M's user avatar
  • 71
7 votes
Accepted

Why can I hear Morse when not in CW mode?

You don't say where you are hearing the Morse code. You say "on the same channels", but don't specify where you are listening. If you send Morse code using a buzzer, then that generates an ...
Scott Earle's user avatar
  • 4,599
6 votes

Can a Baofeng UV5R receive airport radio transmissions?

From the amazon page you've linked to: Frequency Range: 136-174 / 400-479.995 MHz. So, no, you can't receive 121.9 MHz.
Marcus Müller's user avatar
6 votes

Baofeng uv-5r,uv-82. i need disable or block side key moni(monitor) for don´t listen private cts dts

Don't bother. CTCSS tones are not an effective privacy mechanism. Anyone at all with a FM two-way radio or scanner can receive your transmissions; attempting to prevent this by locking down your ...
Kevin Reid AG6YO's user avatar
  • 24.6k
6 votes
Accepted

Is Using PMR446 On A Baofeng GT3-MK3 HAM Radio Legal (If on low power)?

Unfortunately not in the eyes of Ofcom. While you can restrict the power usage down to 0.5 Watts, the antenna is removable. You'll notice that most of the stuff sold on the high-street will have ...
Laice's user avatar
  • 175
6 votes

How can I avoid accidentally transmitting with a Baofeng UV-5R?

While in Chirp go to Duplex and set it to "OFF" If the duplex is set to off then transmission on this channel will be disabled (if the radio supports this capability). Thomas
Thomas's user avatar
  • 61
6 votes

My Baofeng UV-5RV2+ will receive a signal with rubber duck antenna but not with a new Nagoya

The fact that you have a static free signal when you press the monitor button or open the squelch sounds like you may have CTCSS or DCS decode (receive squelch) turned on. This feature is normally ...
Glenn W9IQ's user avatar
  • 18.6k
6 votes
Accepted

DC connector type for Baofeng UV5R base charger

The plug used in the Baofeng base is a 5.5 mm/2.1 mm barrel connector. However, you cannot simply parallel a bunch of base charger units and power them off of a single AC or DC adapter without ...
Glenn W9IQ's user avatar
  • 18.6k
6 votes

BF-F8HP: "Radio did not respond" when trying to use CHIRP

For me I didn't have my radio cable fully pushed into my radio. It took some extra pressure and then it snapped in place. I had to press harder than expected.
RayLoveless's user avatar
6 votes
Accepted

ISS repeater on a Baofeng?

Absolutely. In fact, 8W may even be overkill. VHF/UHF is far more dependant upon line of sight than on transmit power. Since the ISS is a relatively low orbit station, as long as you have a good pass (...
Nilpo's user avatar
  • 176
6 votes
Accepted

Are Baofeng radios illegal in the US?

While some amateur radio equipment is certified by the FCC, much of it is not, as it is the licensed amateur radio operator's responsibility to insure that it follows the rules when transmitting. Many ...
user10489's user avatar
  • 6,455
5 votes
Accepted

What is the socket for on this Baofeng BL-5L battery?

That's for charging a 3800mAh battery using the side jack. To charge the BL-5L 3800mAh battery you must purchase a: - TYT TH-UVF9 battery charger for 110VAC or - TYT TH-UVF9D for 12VDC. These are ...
user8635's user avatar
5 votes

MURS - Set to broadcast and receive on a specific CTCSS code

Here on StackExchange we call what you asked an XY problem. You're asking how to set up CTCSS, but what you really want is to have privacy. Those are two different things. First of all, a tiny bit ...
AndrejaKo's user avatar
  • 2,893
5 votes

UV-5R 4W BFB297 vs UV-5R 8W BFP3-23 (difference 4W vs 8W)

The exact answer is given by the Friis equation. If you double the power, your range will increase by 1.413 times whatever it was before doubling the power if you change nothing else. This assumes you ...
Glenn W9IQ's user avatar
  • 18.6k

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