Set up a Baofeng UV-5R repeater 

Is that on both radios?

@@salopsniper22 yes.

300 ft!? LAME! Try 1600

Big balloon like they use at car dealerships. Thated be it.

I was literally thinking this but with an RC plane that could loiter for hrs.

With a solar charger

The phantom 3 is so good

Why

Just turn the volume down, 🤣🤣🤣🤣🤣🤣🤣

Ooooh, thanks for the tip. I've tried this with cables directly and it's awful, so using resistors will clean up the signal and keep it from clipping!

I've had the same problem it seems these only work when your within a few feet of the receiving radio

I know this is an old comment, but your reciever is being overloaded by your transmitter.

Looks like He did

How do u make it work Ive been trying for months . my antennas are 30' apart horizontally and 10' vertically . all I get is an almost but not quiet

The UV-5R and UV-5RTP stock antennas are atrocious! They are basically a random wire stuffed down a black straw and not even tuned properly. My last ones had almost 2cm of variation over 5 identical models. I originally fitted some very cheap Chinese (counterfeit) Nagoya NA-771's and the difference was incredible. There are also some ultra cheap SRH850S (also counterfeit) helicals which seem to put out almost twice the field strength as the stock antenna, despite being a third of the size - and the performance of those almost rival the far lengthier Nagoya NA-771 I always say that if you really want the best out of a baofeng - dump the stock antenna in the bin on day 1 : ) It's a terrible radiator. The little $2 stubby SRH805S clone is now my go-to antenna for baofeng HT's I've never seen any real front-end overloading issues with any of the baofengs I've owned - and I've tested them on my main 5 element/8 element dual-band Co-linear with 15/19db gain ... they still work well and don't even noticeably saturate when the transmitter is literally a couple of metres away putting out 25w In fact, there are endless youtube videos with people quite happily keying them up just centimetres apart. If anything, I'd say there's far too much headroom in the pre for their just-about-adequate sensitivity.

Unfortunately there is no 'carrier detect' signal available from the receiver. Therefore, you either have to use voice activation or take the receiver apart so you can 'find' the carrier detect signal so you can connect it to the PTT input on the transmitter.

+Bill Oldham Even a copper J-pole and maybe a small 2m amp. I'm thinking about picking up another Baofeng just to experiment with this idea. Might need to buy another sma to so-259. Looks like a fun project. 73

+Bryan Solo dont drop it, its junk

Actually, the GMRS frequencies do have an offset. The transmission out of a gmrs radio on a repeater channel is 467.xxx and the receive is 462.xxx.

or put a good filter on the antennas

zello,allstar , dmr, etc all do exactly this but in most cases a cheap radio is modified with a few resistors and soldered to a cheap sound fob to solve ptt type problems.

I agree with the cycling part.

Or just have the antennas separated

So, with a duplexer I can run my TX radio through an amplifier, to the duplexer, to the antenna. I can run the RX radio to the duplexer to the same antenna. Do I need to be aware of any other technical issues? I can’t run this on HAM frequencies, but could I use this as an FRS / GMRS repeater?

@@memowilliam9889 sounds like you got it. There's videos on here with a guy doing exactly that. He used a retevis repeater, but swapped the duplexer to a 50w.

***** This setup would not work for you. The tk-3360 radios that you have are not repeater ready meaning that you can only transmit from radio to radio directly (aka simplex) for all intents and purposes. Also, you would need 2 radios at home and then one in each car for this setup. If you do not wish to buy new radios, being that you have a removable antenna, I would invest in a external omnidirectional antenna for your home. This will only improve communications between your home and each car respectively. It will not improve communications between the cars. Adding a fairly inexpensive magnet mount antenna to both cars, and you will improve communications all around. Talking on a rubber duck antenna inside a car will ensure that your calling party will not hear you.

Are you one of the 22 people at hamburgerfest who are not too fat to walk, or do you ride a scooter and weigh 1700 lbs, too?

@@democratpro I weigh less than 150 lb buddy

@@seanjuth not bad for being 4'8". Comrade lives matter✊🏿💉💉

I know the extended batteries have ports for AC/DC adapters.

They do have to be different frequencies, or else the transmitting side would hold open the receiving sides squelch and you'd just get a big feedback loop that would never stop transmitting till you turn off the radios. Here's a scenario ... Output Radio - set to 145.650Mhz Input Radio - set to 145.050Mhz So, all your users are listening to the repeaters output on 145.650Mhz, and they need to go DOWN by 600khz whenever they transmit, because that's where the repeaters input frequency is. We call this 'the repeaters offset' ... In this case, the offset is -600khz An offset can be - or + ... depending on whether the repeaters input frequency is lower or higher than it's output frequency. In this case it's minus 600khz. So an offset of -600khz just means (The repeaters Tx frequency - 600khz = the repeaters Rx frequency) Great! So... now your repeater is happily listening on one frequency and (re)transmitting on another. We also know that our repeaters output is 145.650Mhz and we know that its offset is -600khz Now we have to go program the users radios to do the same thing, but in reverse. So, on the users radio: set the receive frequency to : 145.6500Mhz, so it listens to the repeaters output. set the repeater offset to : -600khz, so whenever you transmit it goes down 600khz to the repeaters input frequency. Now the users radio will listen on 145.650 - but will transmit on 145.050 Because this is the opposite way around to the repeater, the system works. Hope that helps

do you have a link for antenna on your amplifier? thinking of setting up this same thing. obviously we need a 3rd UV5r for the walkabout radio, then the other 2 would be at the truck to rX/repeat out from the Amp side

Bruce Wayne Try crossband. Much more better even if theres no duplexer. Just have vertical separations.

So being a nube, I saw a guy who used a strait cord with an adapter (2.5 to 3.5). Your saying that he is going to fry his radio?

@@LM-uz4pr yes, in time.

@@LM-uz4pr That is very likely. Or the retransmitted audio will be severely distorted to the point of being useless.

Darn, too bad you cant just TURN THE VOLUME DOWN! Oh well, shucks

@@democratpro these guys are wrong. It works with vox setup on your baofeng. And the volume can be turned down. These Jack's are analog. Less volume = less volts

Uv5 - vhf/uhf 757 - hf radio ( fm, am, Cw, sub,lsb )

Have this same problem, did you ever fix it?

+Shawn Rigoulot technically you cannot transmit at more than 500 milliwatts which means you're still breaking the law. but in all honesty who gives a shit, and you WILL NOT be caught because nobody actually cares. As long as you are not abusing the frequencies, using bad words, playing music etc. You will be fine. You should monitor your signal just to make sure you're not causing splatter onto other channels of the FRS though - high power settings can create issues for FRS type radios if the channels are closely spaced, you get bad static every time someone on a nearby channel talks with their high power radio.

+Shawn Rigoulot note it is not legal to use them for gmrs or frrs, detachable ant and power, not part 97 compliant, quit hidding the truth

if you can't transmit at any higher then 500 milliwatts.. then why do the ones they sell for both frs and gmrs say 1 watt or 2 watts or 3 watts??? Just curious why is it on the packaging by most companies including motorola.. maybe the FCC should send them a nice little note..

+Shawn Rigoulot to make things simple goto fcc.gov website part97 the info is all there, we wouldn't be having this conversation if you paid more than $25 for the cheap Chinese radio

+bryon clemons yeah, because someone who responds to a video must have the same equip that the video is about. First off myself and prob tons of Hams would love to know where to get our hands on a good $25 ham radio. My two radios were more then $25 and they great. I do not now or have I ever owned a baofeng, but people love them. I prefer to own American products but there are no real American made Ham radios. The so called American made radios of Icom and Motorola are not made here. Icom has Asian boards and more most of the time and even Motorola when you pop the battery out of the HT or look at the back they all say made in Malaysia. So, Ill take the made in China or Japan over Malaysia any day. I am aware of the issues in part 97 but if a natural disaster or worse happens it's good to know how to do this kind of stuff. It's the people who don't take the time to learn new skills that will be in trouble if something major were to happen.

It works either way. You choose what mode you want to use. For a repeater setup VOX is easiest

That is the exact problem that I am having. How did you fix this?

I am having same problem!! did you get the issue solved??

I used the 3.5mm to 2.5mm male jack.the problem was my tx radio was draining fast and it overheated the tx radio.the worst was when i walk 15 meters away the repeater didn't repeat my voice.it only light up that is indicate that their is someone pressing the ptt.how can you fix this problem?plz give me an idea..

and the result?

ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-_KrH86Dzhnc.html

+Dennis Browning A couple of things could be wrong here... *1. Same frequency* Firstly, make sure they're not on the same frequency. Repeaters use an 'input' frequency for listening to users and a separate output frequency for retransmission. You can then set up the users HT's to operate in duplex mode, so that they transmit on the repeaters input frequency when you key up, but go back to the repeaters output frequency when you go back to listening. This is done by setting up an 'offset' You might already know that - but some people might not, so... y'know... I had to mention it : ) It's an easy mistake that some people might make. Forgive me if you knew that already : ) *2. Splattering/Swamping* Now, if your repeater frequencies are set up correctly and this still happens, then your transmitter is saturating the receivers input despite being tuned to a different frequency. There is a 'proper' way to fix this, involving a piece of kit called a duplexer as well as special filters and expensive highly tuned cavities ... but in a back-to-back baofeng repeater you're trying to do it cheaply and without extra equipment. So, here are some ideas : 1. Make sure you're not using the stock antennas - they ain't great and mismatches and poor resonance can make this issue worse. 2. Place the antennas further apart, just a little extra distance (particularly a little vertical) makes all the difference 3. You could try other offsets to see if any are less noisy - usually, setting the maximum offset allowed is best in terms of splatter. 3. Swap the Tx and Rx units roles... I've seen this work and can only attribute it to build variation (The consistency of these units isn't great) If you listen on one HT and have a friend key up from the other on your other frequency you will get some idea of how far apart you need to get to avoid destructive splatter. The safe distance usually isn't as far as you might expect, and just a meter or so can have huge implications. Also, having the antennas separated a little vertically rather than just horizontally can make a massive difference as the antennas radiate the bulk of their power sideways - so a vertical offset is often worth more than an equivalent horizontal offset (good tip there) Basically, when working on the cheap like this, a little experimentation goes a long way. *3. The cross-band solution* If you ARE still having problems and nothing seems to work, note that cross-band repeating is much less prone to this kind of issue. For those that don't know, crossbanding means transmitting on one band (such as 2m) whilst receiving on the 'other' band (in this case, 70cm). Obviously it is easy to create a cross band repeater using back-to-back baofengs as they are dual-band units. Setting up your users handhelds is different for cross-band repeater operation though: If you have access to chirp you can set up the baofeng for cross-band duplex - but it's not possible to program cross-band duplex in the field. *Adding cross-band in the field, without chirp* If you need to set up cross-band in the field you instead use two simplex channels. Set up VFOa for your transmitting band/frequency and VFOb for the listening band/frequency. Now make VFOa your active VFO (The one that is used when you transmit) ... and turn on dual watch mode. This way, your receiver will respond to any activity on VFOa and VFOb. If the other user is close to you then either will be chosen without a problem, but if the user is far from you - VFOb (the repeated signal) will be the only one your radio will pick up. \o/ yay. Now engage the lock on the radio, cus that a-b switch is too easy to hit accidentally ; ) CAVEAT: The problem comes when a user is close enough to be barely audible on VFOa, and the radio selects VFOa instead of the better signal on VFOb... in such cases where this is likely you can always turn off dual watch and switch between VFOa and VFOb manually for each over - not ideal, but it works. In practice this is fairly rare, when a signal is too weak to read it's usually not picked up on dual-watch anyway. WORKAROUND: If you ARE already in dual-watch and this happens, quickly raise the Squelch up briefly... this jogs the dual-watch monitor onwards from VFOa, and it gets caught on the stronger VFOb signal. In practice you won't notice them 'disappearing' because the radio will suddenly pick them up strong on VFOb ... so it feels like plucking the Squelch made them readable. But, like I say, this issue is fairly rare in practice... usually the radio finds the readable signal between the two VFO's One benefit of this system is, if you and a friend wander too far from the repeater (in the same direction) the HT's will automatically fall back to direct user->user communications on the VFOa frequency. Remember, unlike duplex, just because you can hear other members of your party when cross-banding like this, it doesn't mean you are hitting the repeater - your base camp may have lost you ; ) Hope that helps a little, Gary

@ Dennis Browning Do you have solve the problem? I have the same problem... :-(

+Daniel Tyas Well, if you want to spend ~$90 for a duplexer and tune the cavities for a pair of fixed frequencies, sure!

@Jacob Trent what do you mean, make sure vox is configured properly?

@Jacob Trent Oh, okay. Thank you!

Yes a Technician can make your own repeater. Just make sure that you are not using the same repeater pair as a nearby repeater. Otherwise, you might get a pink card from the FCC from an upset repeater owner. Best way to do it is contact your repeater coordinator in your area and find out if there are any repeater pairs that are available, fill out the appropriate paperwork that they require and hope that you get a pair. If not, then you need to do research on the area you are in and make sure that your repeater doesn't interfere with another one using the same frequencies.

In spite of your duplexer the transmit side is desensitizing the receiver. My solution was to get the two radios as far apart from each other as I could and use a looooong audio cable between the radios. But I still had some desensitizing going on because I didn't have a duplexer available.

@@marcspeth4850 One thing also to consider is the possibility of the cable bringing in RF from TX to RX. Consider adding some toroid iron cores along the cable, especially before the TX or "emission" end of the box (although it can work either direction, truth be known!)

+SheepdogSupply Yes, there are other videos showing how it can be done. It's no where near as simple, elegant and reliable though.

Yes, but the audio will be so harsh that you may not be satisfied with it

@@waylonk2453 True! And for Damir, the reason is simple. There's an impedance mismatch which the repeater box handles for you. My experience with my repeater box is the volume of the RX is roughly one-half turn, or barely over half-range when using it for optimal modulation.

Thaks

It depends on your definition of "better". Suppose you have radios that have only one band, i.e. the Baofeng 888S (UHF only). No crossband/split frequencies there. Two UV-5Rs would be fine in a crossband setup, though.

Hey Nathan. Not a dumb question at all. Yes, cross-banding usually reduces swamping/splatter problems... but it's usually best to solve the problem and run a normal single-band repeater where possible. In addition to what Austin said - remember also, that even if your users do have dual-band units ... not all can be set up for cross-band duplexing. The baofengs are a bit weird - they cannot access cross-band repeaters using duplex mode from the radio settings - you have to use the chirp programming software to create a cross-band duplex memory channel. To set up cross-band user operation without chirp you have to use two simplex channels and the dual-watch mode. 1. Set up VFOa (repeater input) and VFOb (repeater output) on their correct band/frequency 2. Turn on dual watch, so that the radio scans both VFO's for activity 3. Set VFOa as the active VFO (The one that is used when you press transmit) 4. Lock the keypad - that ab button is too easy to hit accidentally ; ) You should now be able to access the cross-band repeater easily. If you get out of range of the repeater, your group-members radios will automatically communicate directly via VFOa. That can be useful, but can also leave you with a false sense of security and not realising that you're out-of-range of other groups or your base camp. So, remember to check in regularly if that's important. TIP: If you ARE in range of the repeater and a member comes in barely readable on VFOa (direct) ... briefly raise the squelch. This cuts off the signal briefly and causes the dual-mode monitor to move on to VFOb, where it gets locked on the better VFOb signal. If there is no VFOb signal (maybe out of repeater range) it will just land right back on the VFOa signal anyway. So, it's always worth 'jogging the monitor' Obviously, if you can set all the radios up in advance you can use the 'split' option in the chirp software to create a proper cross-band channel, but it's always useful to know how to set up cross-band operation manually in case you need to do it in the field. Also, remember that cross-band for the sake of it is always a bit of a trade-off and means asymmetric performance. But I'd still say look at your repeater setup and try to resolve the swamping issue first. Gary

+Jerry Kuhn Thanks for that, and you're absolutely right. I do think it depends on when/where your Baofeng was made though. I have two that don't properly create crossband offset from the interface. My friend has a unit which does, so we sat them side by side and mirrored the exact same keypresses ... same problem. We finally did a factory restore but the affected units still don't set up crossband. I think there have been some poorly documented revisions to the firmware over time. But you're absolutely right, I've bought others since which work perfectly. Luckily, my old two are now both stripped down to the boards and I'm controlling the SDR (RDA1846) directly from a PIC chip for long range telemetry with my yacht alarm system. Basically, it chirps me with alarm state, battery voltage, bilge pump seconds, inside/outside temperature and inside humidity from 3 miles away. The local unit decodes the data and writes to a display panel in my shack. The UV-5R's are amazing little things : )

What I meant by cross band repeating originally was UHF on one radio to transmit and VHF on the other radio to receive or vice versa. Receiver sensitivity gets completely smashed when one of the radios is transmitting this close to the receiving radio on the same band, which is why the amateur satellites always do cross band repeating. The radios in the video are both capable of UHF and VHF, so it only made sense in my opinion to cross band repeat, since the capability is there. Has nothing to do with the firmware or anything like that. All that is needed hardware and firmware wise is shown in this video. I have a UV8D that is capable of cross and repeating on it's own, but that is not what I am talking about. I am talking about using two radios with the cable shown, one on VHF, one on UHF, one receiving and one transmitting. And as far as the operators using UV5Rs, it is capable of cross band splits programming it through chirp.

+Nathan JR Agreed. The only proper way to repeat in the same band is to use tuned cavities (notching) as far as I am aware, but the cost of those defeats the purpose of an ad-hoc baofeng repeater. With 5w units it IS possible with a little distance, careful choice of frequency offset, etc ... but it's a hassle. Vertical separation of antennas is more effective than horizontal separation but then you're sacrificing height which can make the whole endeavour pointless unless you've got natural height by virtue of a hill or crag. It ain't always straightforward by any means but it's certainly doable, particularly at low wattages, with a little experimentation. I've deployed them many times in the same band without major problems, but placement is key. I guess the best advice is to always favour cross-band if at all possible.

You have to configure VOX properly. Also add tones (CTCSS/DCS) for smoothing out noise interference.

This device is basically used as a range extender, not to be set up as an area wide permanent repeater. This cant be programmed for that. Its more for emergency communications on a temporary basis.

Doesn't work!!! I was once a Sub but I notice when these RU-vidrs doing it for $ and not the Hobby...YOU Dont get A RESPONSE from the creator...but when its them spending there money all you get every Question in the comments ANSWERED...LMAO..WOW

I’m experiencing the same thing. Works to transmit 1 time then just keys up back and forth constantly.

Try raising the transmit antenna 10 to 15 ft above the receive antenna.

ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-_KrH86Dzhnc.html

1) No, ID must be done by the sender (there is no separate ID for the repeater) 2) You can use UHF on both, or VHF on both, or either on one and something else on the other. 3) Whatever comes into 1 radio will be transmitted out the other radio. For example: if you had your receive radio on a Ham radio frequency and your transmit on a GMRS frequency, then when you transmit on your Ham radio, the GMRS radio was receive your signal. However, this configuration would be illegal. I just used it to give you an example to better understand the operation and the differences.

This is very simple. 146.460- .600 offset would be 145.860.. just count up or down .600

@@HamRadioConcepts can u please explain it like I was a 5 year old child . what is radio b set for ?

my two radios and the san sonic inbetween dohickie came today .