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13 votes
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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
10 votes

How do I legally use a Baofeng UV-5R radio for communication?

In the United States, for the most part, all radio transmissions fall into one of three categories: The operator is allowed to transmit on that frequency (amateur, "business band", aviation, military,...
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  • 22.9k
10 votes

Would a ham license allow me to use an uncertified radio on other (non-ham) bands I have permission to use?

I just purchased a UV-5R to hopefully integrate into business class radios my company uses. Unfortunately, this is not likely legal. Business radio is licensed under the FCC's Part 90 rules; those ...
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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
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Why don't I hear the CTCSS tones when listening on the repeater input frequency?

Many radio manufacturers are aware that people don't want to hear CTCSS tones - so they put high-pass filters on both the output (speaker) and input (microphone). That eliminates the tone before it ...
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  • 1,615
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
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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6 votes
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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
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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5 votes
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Programming software for Boefeng UV-5RE Plus

I use chirp (http://chirp.danplanet.com) to program it's memories. A simple USB-UART chip like this ..is all that I use to connect to the pc. With regards to pinouts, use: The above schematic ...
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  • 1,054
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

Difference between Boefeng UV-5RE Plus and UV-5

See This Chart at BaofengTech.com. Really the UV-5RE is just a cosmetic variant of the UV-5R. As to your firmware version you should check out this page at Baofengtech.com. Sadly it is not very ...
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  • 1,246
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 ...
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  • 18.1k
5 votes
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UV-5R 4W BFB297 vs UV-5R 8W BFP3-23 (difference 4W vs 8W)

4W to 8W is a doubling of power, or a 3dB increase. That's 3dB you can add to your link budget. Provided of course that the limiting factor is the other station hearing you, not the other way around. ...
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4 votes

Difference between Boefeng UV-5RE Plus and UV-5

The main differences with these units is FIRMWARE! The firmware can be checked by powering off the unit and holding the "3" key down as you power it on. This number however does not always reflect ...
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4 votes
Accepted

Storage of a Baofeng UV-5R

Battery University has some general information on storing batteries. Relevant points: Storing a Li-ion battery in a discharged state will permanently damage it Storing a Li-ion battery at 100% ...
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4 votes

HT programming software alternative to Chirp and RT-Systems

How about the software made by Baofeng for the UV-5R? http://www.miklor.com/uv5r/UV5R-Software.php I have used it and works fine when you figure out how to put it into English mode. The instructions ...
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  • 41
4 votes

If someone transmits on 151.88 MHz and I listen on 151.18 MHz, how likely would I hear their transmission?

In theory, this is a question of the bandwidth - or better said of 2 bandwidths. In practice it's much more complex. But let's have a look at bandwidth theory first: the bandwidth of your transceiver ...
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  • 151
4 votes
Accepted

Can I contact the International Space Station using my Baofeng UV5R?

In theory, yes. In practice, "probably not". In my experience, the front end on Baofengs is not very good. We have a UV-82, and it just did not work when we tried to use it for amateur satellites (AO-...
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  • 1,159
4 votes
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UV-5R High Gain Antenna Performance

This is a harder question to answer than you think for a number of reasons. I'll start off with the ideal answer: The Diamond RH-771 claims that it has 2.15 dBi gain at 70cm (or 0 dBd). Most rubber ...
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  • 1,615
3 votes

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

Of your quoted testimonials, the one I'd put the least credence in is the 10 miles at 4w and 16 miles at 8W, because I'm not sure what they mean by the "elevation difference" disclaimer; at these ...
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  • 716
3 votes

Colorado to Ohio with UV-5R

Use the satellite SO-50 when it passes over. You need nothing more than what you have now, although improved antennas would help tremendously.
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3 votes

Is there any PC remote control software for the Baofeng UV-5RE Plus?

No the UV-5R does have a programming cable but it does not do any more that retrieve/store information to the radio. It is possible to build a small device that will listen to the audio output of the ...
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3 votes

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

I have a UV-5R, and both the 771 and the 701. Those antennas were the best decisions I ever made. I was having trouble hitting repeaters 1-2 km away when I was indoors. With the 771, I could hit 70cm ...
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3 votes

What's a cost-effective way to boost the range of my cheap 2m/70cm handheld?

You might want to use a roll up antenna called the DBJ-2 from Ed Fong. See: http://edsantennas.weebly.com/ It's a J-pole antenna. I use one with my hand held and it works great! If you email Ed ...
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  • 31
3 votes

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

The correct answer to your question is, I believe, that you should expect an increase of between 20-40% in range, depending on the height of the repeater(s) you are trying to hit as well as your local ...
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  • 432
3 votes
Accepted

How can I find the input port for downloading my radio information?

The program is asking you which serial port you're using to connect to the radio. If CHIRP's list is empty, then you probably have no serial ports because the drivers for the virtual serial port chip ...
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  • 8,922
3 votes

Why don't I hear the CTCSS tones when listening on the repeater input frequency?

The volume of the tones is typically low enough with respect to the voice signal that you can't hear it. Occasionally the tone generator in a radio will be poorly calibrated, and you do hear it. ...
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  • 4,203
3 votes

Why don't I hear the CTCSS tones when listening on the repeater input frequency?

Same with SDR software. My SDR code runs on a iPhone that's connected to "HiFi" audio transducers. So I had to add a 270 Hz high-pass biquad IIR audio filtering subroutine to get rid of ...
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  • 12.4k

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