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33 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 ...
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  • 23.1k
24 votes
Accepted

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

It'll be easier just to buy a programming cable and use the free Chirp software to turn off transmit permanently. I did this, and used my Baofeng as a receiver only before getting my licence. EDIT - ...
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  • 256
18 votes

Are Baofeng radios illegal in the U.S?

The ARRL runs a booth at Dayton Hamvention since 2012 where people can submit their HTs to be tested for spectral purity. Over the years 2016-2019, 100% of the Alinco, Icom, Kenwood, and Yaesu HTs ...
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  • 9,021
16 votes
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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. ...
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  • 7,515
14 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 (...
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  • 18.1k
13 votes
Accepted

How do I troubleshoot a Baofeng UV-5R that won't receive?

I did a bit more reading, and it seems that the new version of the firmware meant I needed to use a different chirp profile. The solution that worked for me was to find a factory image from a radio ...
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  • 351
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 ...
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  • 3,409
11 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!
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  • 753
10 votes

How does the baofeng radio eliminate squelch tail?

According to the detailed menu descriptions on the Miklor site: 35 - STE Transceiver - Squelch Tail Elimination This function is used eliminate squelch tail noise between UV-5Rs that ...
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  • 201
9 votes

Are there any real advantages to an aftermarket NA-701 over the Baofeng stock antenna?

Yes, the baofeng stock antenna is the worst antenna I have ever used. I have both. The range on my 5W BaoFeng UV-5R, with the stock antenna is about 3 KM with direct line of sight and no obstacles, ...
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9 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 ...
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  • 727
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 ...
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  • 8,922
8 votes

Does the Baofeng UV-5R accept both male and female SMA connectors?

The Baofeng UV-5R and any other variations in the UV-5R family of radios have an SMA male connector on the radio mating to an SMA female antenna or SMA female adapter. In the picture I'm holding the ...
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  • 317
8 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 (...
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  • 23.1k
8 votes

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 ...
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8 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 ...
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  • 737
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-...
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  • 8,922
7 votes
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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 ...
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7 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 ...
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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 ...
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  • 4,329
6 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 ...
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  • 61
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 ...
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  • 175
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 ...
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  • 23.1k
6 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 ...
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  • 716
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 ...
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  • 18.1k
5 votes

Boefeng UV-5RE scanning capability

1) listen to FM radio, while scanning 2 meters and 70cm bands at background (as in hiking)? nope (and only 1 band scanning at a time) 2) set scan hi and low limit, via keypad and/or pc software, ...
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  • 76
5 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
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  • 51
5 votes

What is the minimum signal strength I need to receive?

At 8W, the power from the radio is 9.03dB. With the cable losses of the receiving station being 1.5dB (1.41W), and the antenna receiving 1.733e-8W, it appears the received signal will never make ...
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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 ...
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5 votes
Accepted

Does the Baofeng UV-5R accept both male and female SMA connectors?

No, the UV-5R will not accept a female connector. The threads on the outside are for the nut that mounts the connector to the case.
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