Imagine having this connected to a large antenna on your roof and your phone paired wirelessly with the board (via WI-FI ou Bluetooth). The real Radio Phone!
A few years back bought a vhf/uhf radio from China it was also a mobile phone which accepted 2 sim cards came with 2 antennas one for vhf/uhf one for the phone....can't remember the name ..cost about 35 quid
The ones I saw, were Motorola knock offs. They use them on construction sites, then toss them, cos the next job hands out new units on a new freq, etc.
Believe it or not, Samsung even made a short band radio capable Galaxy S3. It was a China Telecom a special release. It was designed to pick up Digital television with a telescoping antenna that even has a swivel and pivot. Someone got a colonel functioning with full control. One of the coolest devices that was sad to see finally reach EOL. I want to say it was the power management side that failed, but I'm still so glad I bought that off of a Chinese student going to the local College, trying to buy a phone while they were in the US. One of the many Oddball perks of being in cellular repair
I have just received a load of 1.7b boards, populated with the filter components. They just need to RF module, ESP module and SMA socket. I MAY give away the bare boards at some point in the future. I also might get some fully made and sell them, depends on demand really.
I have been getting back into SDR and HF through linux. I will have to look into this project, and see if I can contribute. Imagine it wouldn't be too hard to do transcription and data parsing
brilliant idea!, but if u make it with mounting or grip and easy to stick on back of other phone case's with extra PTT dedicated button i would say its so great
@@tratzum those modules on high power setting have a typical output of 29.5dBm (about 0.9W) - max is 32dBm (about 1.25W) on low power mode its 27dBm (about 0.5w) Not exactly high power output
I watched this and was trying to work out WHY IT EXISTS....when you can buy a chinesium radio that does all this and more for $50. Then right at the end it all made sense to me..... When you added that short USB-C cable to the unit, it made it look like something some time travelling cop would pull out of his kit when he's skip chasing a villian across multiple alternate times and era's.....like in all those documentaries they make about that kind of thing.
It is powered by the Phones Battery via USB-C Assuming 60% Efficiency circa 500mA current draw at 3.7V from Phone Battery It will be interesting to see how long the Phone Battery Lasts
Amazing! If would be nice if pi pico could be used in place of smartphone to act as dedicated vhf radio for comunication. I asume there is something like android avaliable for raspbery pi and the app here should be on fdroid too.
I have an old Runbox X5 with builtin UHV radio. It is very cheap nowadays. It has similar radio-module onboard. Probably some one can try to use such module.
I ordered a set of 30 for a club. Bought all the bits. Then the ESP32 module didn't fit the boards. Apparently a known issue. The project has gone from V1.6 to V1.9 in the past few days! Shame, as I'm now stuck with a load of parts that won't fit!
Can the application be developed to receive digital radio waves and add a special encryption box. So that it can be received and sent with Hytera radio devices?
Unfortunately not, you have to get the boards etc yourself. However, I might do a limited run of them if the interest is there. I have a new video coming out on this in a few days with an update.
It was designed that way so everything lined up with the 3D printed case. You are more than welcome to make some changed to the design and submit them via Github, it's an open source project. :-)
@TechMindsOfficial Don't take this as hate. I used to do it just like you and it took up a lot of space. Some time ago I created a pseudo-SDR based on an old TV. (RUclips/ELEKTRON1) The TV tuner module is controlled via I2C by a microcontroller. The IF signal from the tuner (approximately 30...39MHz) goes to the NE612 mixer and is mixed at a frequency of 27MHz. I filter the received signal and feed it to SA604. Thanks to this, I can demodulate and quickly measure the signal strength. The project became popular because it could be used to receive railway service radio. I am also a Creator like you, I create projects for my viewers. My latest project is a NEC IC programmer. I found these chips in a water heater and wanted to write Hello-worlld on it (and my mission in life is to run BLINK on every microcontroller possible). You did a great job and you deserve applause. Greetings from Poland, ELEKTRON
@TechMindsOfficial I may also submit the idea of using an SR_FRS-W2US radio module as it's 2w UHF, but has been hacked before to operate 146-222-440 MHz with the Arduino handie talkie project, as well as having a switchable LPF with the LFCN's
Maybe this radio is already made to be interfaced with a microcontroller and be digitally controlled, instead of having some external hardware. The audio should also be routed into the esp32 to be sent via USB!
The frequency range is determined by the radio module which is DRA818V/SA818-V. I think this one of the modules from the baofeng UV-5r so it might do that full range. The link to the module is on the project page.
Dedicated phone with radio are most likely closed source, and cost 100's of $. A $35 HT does not have the ability to use software. This costs less than $35 for a single unit, and it's open source. This means that we have a software controlled VHF radio which can yield all sorts of future developments. Hope that helps.
Why not UHF instead of VHF ... much better for this kind of use ... smaller antenna also ... or same size giving more gain ... more repeaters on UHF also...etc ...etc ..VHF is kind of dead ... all the innovation is at UHF ... I checked and the modules it uses are also available in UHF ... same price ... i dont understand why they would chose VHF ... unless the man had already 200 VHF modules laying around somewhere and found a new purpose for them ... i dont think that was the case .... but hey i'm from Europe and some other areas might exist where VHF is all there is ;)
@@SkillfulHacking ... I'm not interested, i have radios enough ... i was just pointing out that some have no clue about their market & developing the right product for it ;)
@djmambito2 Market? The guy that designed this made it open source! There is no market if there is no product to sell. It's created to inspire people to be creative. If it's not for you, then that's fine too. Some Ham Radio operators only like black boxes off the shelf. Cheers
@@TechMindsOfficial 1) Open source or not is not of interest or the issue here ... 2) Anyone that designs something for either hobby or commercial purposes ... should first investigate if there's a demand for his idea and how it should be , or what is wrong with other units ... Obviously there's various choices ...and whoever made this unit made wrong choices ...it's going back in time instead of forward ... Now i could understand this choice if there's a reason for that choice ... but there isn't single reason for choosing VHF instead of UHF .... UHF would have been better as i explained why previously... Obviously the designer doesn't understand this basics .. it's lack of knowledge & insights ... wrong choices ... I'm just trying to explain how things work ... the designer will find out later , or maybe not, cause he is obviously not looking around and just waisting his time.
@@SkillfulHacking thanks, it will be interesting to see how this develops over time. could be usefull as rf for digi modes from morse right through to digi voice. im thinking pota and sota.
This is cool, but tooooooooooooooo expensive project, for this money you can buy a few Chinese SDR radios with better parameters and also hackable! E.g. Quansheng line can be updated to operate as 2 bands transceiver with ability to receive in full SW range... 73!
I think you're missing the point with this. The possibilities of having it app driven is pretty out there. Of course you're confined to the 2M band, but with software, can do anything in terms of modulation, decoding, etc etc.
@@TechMindsOfficial I've got it, but mentioned quansheng already has such functionality as full featured remote control (e.g. with "Quansheng Dock") , and it's significantly cheaper. Of course, "Quansheng Dock" is for windows, but I hope something exists for android as well.
Dear friend. Pls infm if the walkie talkie thar cames out of this DIY works only between Walkie Talkie to Walkie Talkie OR if it can do it with a Repeater ... By other words, Walkie talkie to Repeater and then Repeater to destination Walkie Talkie. Pls infm as well if it is possible to transform the "keypad" of the celular into a DTMF sellcall to the other Walkie TAlkie
Encryption is not allowed on the Ham Radio frequencies. However, you are more than welcome to Fork the Android application and add your own if it's needed for personal use.
because a cheap walkie talkie does not have the power of an Android device running it. Which potentially opens the door to a lot of experimental and useful software applications. Cannot compare this with a standard radio.
That's true you can, but a $30 radio does not have the power of an Android device which can run endless amounts of compatible applications. So, not really just a tinkering exercise, but it is fun!
This is right up my ally. Dipoles be damned, what a cool project!
I can hear my soldering iron calling to me.
😆 made me chuckle. If my grandfather were still alive, he would tell me I was committing an abomination.
What would be nice is a provision on the PCB for a second USB connector which could be used to charge the phone while being used.
most of phones can't work in dual mode. only "host" or "device".
Most phones won't support this, but you might be able to get away with simultaneous wireless charging and USB OTG
Imagine having this connected to a large antenna on your roof and your phone paired wirelessly with the board (via WI-FI ou Bluetooth). The real Radio Phone!
I remember one of my older Android phones had a radio function, you just had to correct wired headphones. The wire functioned as the antenna.
My old Sony Ericson phone had an broadcast FM radio receiver - it used the wired headphone as the antenna. That was some years ago now
Great Project! Would like to buy a complete product soon.
That is way cool going to look into this as a club radio project.
Good project, the last time i made an android text message tranceiver using esp and LoRa Module
Greeting from Morocco
Finally something awesome like this for the rest of us. How much juice does it pull?
It would be cool to see a built-in Bluetooth feature on a future version of the PCB. That USB interface is kind of clunky
ESP32 has Bluetooth
A few years back bought a vhf/uhf radio from China it was also a mobile phone which accepted 2 sim cards came with 2 antennas one for vhf/uhf one for the phone....can't remember the name ..cost about 35 quid
if you ever found the name for similar model please tell us. this build here in this video cost almost 50$.
The ones I saw, were Motorola knock offs. They use them on construction sites, then toss them, cos the next job hands out new units on a new freq, etc.
Believe it or not, Samsung even made a short band radio capable Galaxy S3. It was a China Telecom a special release. It was designed to pick up Digital television with a telescoping antenna that even has a swivel and pivot. Someone got a colonel functioning with full control. One of the coolest devices that was sad to see finally reach EOL. I want to say it was the power management side that failed, but I'm still so glad I bought that off of a Chinese student going to the local College, trying to buy a phone while they were in the US. One of the many Oddball perks of being in cellular repair
Maybe you mean a hybrid POC radio
Runbo
Can I buy a COMPLETELY ASSEMBLED unit anywhere? Thank you for the fabulous project.
I have just received a load of 1.7b boards, populated with the filter components. They just need to RF module, ESP module and SMA socket. I MAY give away the bare boards at some point in the future. I also might get some fully made and sell them, depends on demand really.
Gamechanger. I'll be ordering this weekend.
I have been getting back into SDR and HF through linux. I will have to look into this project, and see if I can contribute. Imagine it wouldn't be too hard to do transcription and data parsing
brilliant idea!, but if u make it with mounting or grip and easy to stick on back of other phone case's with extra PTT dedicated button i would say its so great
Backplane attached is missing connection over NFC of course. A separate battery will be much better using phone shared one (not every phone allow that
Dear what is the frequency range and power output of the transceiver?
Is that cable always needed?
What is the TX power output?
Show more videos on the APRS features 😅
@@KA4UPW Yes. It’s the data cable the UI on the phone uses.
@@KA4UPW i read somewhere it's 1 w output
@@tratzum those modules on high power setting have a typical output of 29.5dBm (about 0.9W) - max is 32dBm (about 1.25W)
on low power mode its 27dBm (about 0.5w)
Not exactly high power output
@@keithroberts5946 dam rules of 3's and 10's.
Tx
Very Nice! hope to see this for sale fully made soon i cant solder these days cba also what is the max output power?
> what is the max output power?
1 watt
I bet if you asked people in the chat of the project someone would build one for you for a fee.
I watched this and was trying to work out WHY IT EXISTS....when you can buy a chinesium radio that does all this and more for $50. Then right at the end it all made sense to me.....
When you added that short USB-C cable to the unit, it made it look like something some time travelling cop would pull out of his kit when he's skip chasing a villian across multiple alternate times and era's.....like in all those documentaries they make about that kind of thing.
Why waste money on a chinesium radio?
Nezium can't short messages. Do you see many nezium radios code source is available?
@sammiller6631 they love giving money to a government that uses forced labor from political prisoners to build stuff, I guess?
It is powered by the Phones Battery via USB-C
Assuming 60% Efficiency circa 500mA current draw at 3.7V from Phone Battery
It will be interesting to see how long the Phone Battery Lasts
Amazing! If would be nice if pi pico could be used in place of smartphone to act as dedicated vhf radio for comunication. I asume there is something like android avaliable for raspbery pi and the app here should be on fdroid too.
Good idea to connect this with my car android head unit with this interface and get radio working in car😀
definitely need an external antenna, this only outputs 1w
Amazing project... and cheap! Thanks !
Glad you like it!
we had this like 9 years ago... using a rtl dongle and a otg cable and a app called sdrtouch... but no tx though ... i love it
Any chance this does ssb? Great video, ill definitely check this out.
Interesting project. Does it also receive AM. What is the frequency range?
I have an old Runbox X5 with builtin UHV radio. It is very cheap nowadays. It has similar radio-module onboard. Probably some one can try to use such module.
A couple of years ago, every Amateur Radio RUclipsr was making videos about Meshtastic. It seems to be this gadgets turn now.
Wowser that sounds like a good project.
I ordered a set of 30 for a club. Bought all the bits. Then the ESP32 module didn't fit the boards. Apparently a known issue. The project has gone from V1.6 to V1.9 in the past few days!
Shame, as I'm now stuck with a load of parts that won't fit!
There is a WIP 1.8 but I don't see a 1.9. 1.7b is the latest release version of the board.
awesome, so many possibilities and uses. great find.
Does your phone need to have a sim card installed to work with this setup as described?
Asking for a friend.
Can the application be developed to receive digital radio waves and add a special encryption box. So that it can be received and sent with Hytera radio devices?
do you have this completed project available to buy from your Amazon account?
Unfortunately not, you have to get the boards etc yourself. However, I might do a limited run of them if the interest is there. I have a new video coming out on this in a few days with an update.
@TechMindsOfficial cool I just ordered a 3 pack of the eap32 lora V3 cheers
Oi kinda wanna build one too. Thank you!
instead of the development board, you could have soldered the module itself. everything would be at least twice as small.
It was designed that way so everything lined up with the 3D printed case. You are more than welcome to make some changed to the design and submit them via Github, it's an open source project. :-)
@TechMindsOfficial Don't take this as hate. I used to do it just like you and it took up a lot of space. Some time ago I created a pseudo-SDR based on an old TV. (RUclips/ELEKTRON1) The TV tuner module is controlled via I2C by a microcontroller. The IF signal from the tuner (approximately 30...39MHz) goes to the NE612 mixer and is mixed at a frequency of 27MHz. I filter the received signal and feed it to SA604. Thanks to this, I can demodulate and quickly measure the signal strength. The project became popular because it could be used to receive railway service radio. I am also a Creator like you, I create projects for my viewers. My latest project is a NEC IC programmer. I found these chips in a water heater and wanted to write Hello-worlld on it (and my mission in life is to run BLINK on every microcontroller possible). You did a great job and you deserve applause. Greetings from Poland, ELEKTRON
Hello techmind, was this available for 2 meter band only? How about 70 cm band? Thanks and 73 😊😊😊
VHF for this design, but should not be too difficult to make one for UHF too.
Someone needs to add a Bluetooth connection to replace that otg.
Are the low and high pass filters software based or additional hardware?
The filters settings on the app refer to the received audio only.
So what's the range of this?
Whoa... I must get a few.
Nice overview, God bless.
Thank you kindly
Question for me is why not use mini-circuits'monolithic SMT LPFs? (LFCN-) I think you can get them from both mouser and DigiKey...
Put forward your idea to the project, I’m sure it would be very well received from them.
@TechMindsOfficial I may also submit the idea of using an SR_FRS-W2US radio module as it's 2w UHF, but has been hacked before to operate 146-222-440 MHz with the Arduino handie talkie project, as well as having a switchable LPF with the LFCN's
Maybe this radio is already made to be interfaced with a microcontroller and be digitally controlled, instead of having some external hardware. The audio should also be routed into the esp32 to be sent via USB!
Could this work for listening in on air band frequencys ? From the 108-137 MHz range ?
Interesting. Could It work for Airbands, and Can you disable Tx on certains fréquences to avoir any mistake or unwanted transmission ? ?
Only for RadioAmateurs?
This is straight up from cyberpunk. Super Cool.
Is it just 144-148 or the usual 136 to 174Mhz?
That's controlled by the software. As is, it's just the two meter band. just modify the software.
Imagine being able to work 1.25m on that...
The frequency range is determined by the radio module which is DRA818V/SA818-V. I think this one of the modules from the baofeng UV-5r so it might do that full range. The link to the module is on the project page.
I think you can dual band the antenna if the performance is not optimal. In USA it's 16 centered, ais is at one end.
I'm still waiting on my parts from AliExpress and my v1.7b PCBs from that other board house... sssshhhhh.... (I do like JLCPCB though)
So what's the frequency range ? Someone going to come up with a 0-6GHZ version for receiving like the Ali Express ones
Работает с Meshtastic?
Возможно прослушивать несколько каналов одновременно?
Будет плагин для ATAK ?
Can I use it on my current android phone and it works only when it's plugged in? Or do I need to use a different phone that isn't currently on a plan?
you can use it on any Android phone that supports OTG and the app. Doesnt matter if it is on plan or not.
I wonder if this can do UHF or better still for me the 220 MHz band?
Gonna give this a try. But with that antnna, I'll look like i have a mobile phone for then 90!!
What is the frequency range of this ?
going to try one of these with my Boox Tab Mini C. does anyone have thoughts about how to get your transmit power up to 5W or so?
A Baofeng UV5R is like $20 shipped from Ali. What is the point of this radio module other than you build it yourself?
nice nice. thanks for this
Most welcome
you can already buy integrated phone/ht, and a dedicated ht with battery cost less than half as much. why the exitement?
Dedicated phone with radio are most likely closed source, and cost 100's of $. A $35 HT does not have the ability to use software. This costs less than $35 for a single unit, and it's open source. This means that we have a software controlled VHF radio which can yield all sorts of future developments. Hope that helps.
Can it also be programme to use the VHF Marine band
Well... not really "ANY Android". Maybe let people know the minimum Android version for the apk to work?
This is awesome!
Take my money!!!
Gross, JLBPCP wants $100 for assembly.
Where did I put my soldering iron?
what (SDR) software are you using at 10:11 ?
SDRuno by SDR Play. It works with their SDRPlay SDRs.
I've never heard someone say PCB so many times in my life. I feel schizophrenic.
Imagine how I felt! I dreamt about those three letters for days on end!
How far can it transmit message?
nice
Very cool.
Marine VHF?
What’s the power output?
DRA818V is 1W.
According to the Aliexpress page, the SA818S is 0.5 - 3W. 134 - 174 MHz.
So in theory, you could pick up NOAA Satellites at 136.1 MHz.
@@Soupie62 pity theres no good decoder for android
This is epic .
I wonder if this transceiver will work with Rattlegram? 🤔
If rattlegram is open source, then sure, it could be incorporated.
I really hope someone can invent one that's purely a VHF/UHF scanner receiver with AM Airband receiver built-in!??
Why not using one of the better RTL-SDR's and an app like SDR Touch?
All existing, even more so if you start digging deeper into this hole. :)
RTL-SDR dongle with SDR++ running on Android. Of course that is receive only, no transmit and no making use of the phones/devices peripherals.
Why not UHF instead of VHF ... much better for this kind of use ... smaller antenna also ... or same size giving more gain ... more repeaters on UHF also...etc ...etc ..VHF is kind of dead ... all the innovation is at UHF ... I checked and the modules it uses are also available in UHF ... same price ... i dont understand why they would chose VHF ... unless the man had already 200 VHF modules laying around somewhere and found a new purpose for them ... i dont think that was the case .... but hey i'm from Europe and some other areas might exist where VHF is all there is ;)
Fork it! UHF support shouldn't be difficult the filters might need to change a little bit.
@@SkillfulHacking ... I'm not interested, i have radios enough ... i was just pointing out that some have no clue about their market & developing the right product for it ;)
@djmambito2 Market? The guy that designed this made it open source! There is no market if there is no product to sell. It's created to inspire people to be creative. If it's not for you, then that's fine too. Some Ham Radio operators only like black boxes off the shelf. Cheers
@@TechMindsOfficial 1) Open source or not is not of interest or the issue here ... 2) Anyone that designs something for either hobby or commercial purposes ... should first investigate if there's a demand for his idea and how it should be , or what is wrong with other units ... Obviously there's various choices ...and whoever made this unit made wrong choices ...it's going back in time instead of forward ... Now i could understand this choice if there's a reason for that choice ... but there isn't single reason for choosing VHF instead of UHF .... UHF would have been better as i explained why previously... Obviously the designer doesn't understand this basics .. it's lack of knowledge & insights ... wrong choices ... I'm just trying to explain how things work ... the designer will find out later , or maybe not, cause he is obviously not looking around and just waisting his time.
very cool
WOW
does anyone know the output wattage and power drain on your phone?
@@mi6xgzjon186 1W from DRA818V.
The module 818 is 1 watt, I was curious if the PCB would support the 868 which is 2 watts.
@@SkillfulHacking thanks, it will be interesting to see how this develops over time. could be usefull as rf for digi modes from morse right through to digi voice. im thinking pota and sota.
Short 20 parts (5 per board) 11/6/24
I don't like it; these damn smartphones are everywhere. Just as well, there could be a small screen and an encoder instead of that phone.
That's not true, the smartphone is bringing all the audio section, microphone and speaker, plus the power supply.
This is cool, but tooooooooooooooo expensive project, for this money you can buy a few Chinese SDR radios with better parameters and also hackable! E.g. Quansheng line can be updated to operate as 2 bands transceiver with ability to receive in full SW range...
73!
I think you're missing the point with this. The possibilities of having it app driven is pretty out there. Of course you're confined to the 2M band, but with software, can do anything in terms of modulation, decoding, etc etc.
@@TechMindsOfficial I've got it, but mentioned quansheng already has such functionality as full featured remote control (e.g. with "Quansheng Dock") , and it's significantly cheaper. Of course, "Quansheng Dock" is for windows, but I hope something exists for android as well.
Does this work without cell service or wifi? It'd be great for camping
Yep, it is a standalone module, you just need to app for it to work.
❤
Dear friend. Pls infm if the walkie talkie thar cames out of this DIY works only between Walkie Talkie to Walkie Talkie OR if it can do it with a Repeater ... By other words, Walkie talkie to Repeater and then Repeater to destination Walkie Talkie. Pls infm as well if it is possible to transform the "keypad" of the celular into a DTMF sellcall to the other Walkie TAlkie
I think its a awesome project but they have to implement encryption
Encryption is not allowed on the Ham Radio frequencies. However, you are more than welcome to Fork the Android application and add your own if it's needed for personal use.
@TechMindsOfficial understood thnx for reply 👋
На войне первая вещь.
Lol .why not buy a cheep vhf walkie talkie lol....another useless item..
because a cheap walkie talkie does not have the power of an Android device running it. Which potentially opens the door to a lot of experimental and useful software applications. Cannot compare this with a standard radio.
Well you can buy a handset for about $30 so this is really just a fun tinkering exercise.
That's true you can, but a $30 radio does not have the power of an Android device which can run endless amounts of compatible applications. So, not really just a tinkering exercise, but it is fun!
What is the output power?
❤