ฝัง
- เผยแพร่เมื่อ 23 พ.ย. 2024
- New V.2 Si4732 Module is truly amazing modification, which turns the UV-K5 to a REAL general coverage Radio! It's sensitivity on HF is equal to the portable TECSUN's receivers.
Questions and Answers video after this mod: th-cam.com/users/li...
MODIFIED vs. GENUINE HW - HF SSB Reception Quanshengs UV-K5 video: • MODIFIED vs. GENUINE H...
Quansheng UV-K5(99): www.aliexpress...
Buy already modded UV-K5 here:
a.aliexpress.c...
V2 Si4732 Module PCB: a www.aliexpress...
CEC 0.41HF Custom Firmware: www.hamskey.com...
Antenna 27MHz Telescopic Whip(BNC): www.aliexpress...
BNC-F socket used in the video: www.ebay.com/i...
#v2 #modification #quansheng #uvk5 #fullband
Thank you for taking the time to show the work in detail. You are very good at soldering. Looks like these mods are getting better and slightly easier each time. One day i might be able to try one myself.
Just a tip when removing that ic. Do not bend it up on it's opposite legs for fear of damaging traces on the board. Simply bend a piece of solid copper wire in a u shape so that it fits all legs at the same time. Flood the wire around the ic and it will come away in one piece with no bending required!
Hello. Use 50 ohm RF1.13 shielded cable (outer diameter 1.13 mm) or 50 ohm RG178 Teflon (PTFE) cable outer diameter 1.80 mm which will allow you to weld the ground braid without melting the central core. Thanks for the video.
Hey, so the conversation you caught on 20m was from Greece, and I’m 99% sure that same person is on a 70cm(!) repeater near me (these guys always brag about their HF rigs, I can see why…) I use pretty much the same radio, which is quite the testament to the versatility of these Quanshengs when modified appropriately! Cheers!
Awesome as always! Keep improving these radios!
To remove and make the "LED hump" flush, I used a soldering iron set to 340F with an old flattish blade tip and very very carefully melted it down little by little. It gave a nice smooth result. I imagine a woodworking iron would work too.
The smoke from this type of plastic was not black noxious smoke. It was barely visible and had an almost sweet smell. I was able to melt it the plastic indoors without stinking up the place, but use your judgment. :)
Melting certain types of plastic with a soldering iron also helps with shaping square or unusual holes. It's great for mounting square switches because you have more control over the shape than with a knife.
Thanks Paul for your work in this great little Radio.
I did the Mod too, and i‘m very happy :-)
For all the guys that have the same problem with the TX/RX-LED:
It is absolutely certain that the flashlight was removed by cutting the board, and a trace was interrupted, which is contacted through the pcb.
But it's not a problem, I followed the trace and re-laid a wire to restore the function of the LEDs.
The Cu-Wire is soldered from the top of the LEDs to the bottom right pin of the volume knob.
(View of the front of the lying PCB)
That's all!
73 de Henning
Thank you for your comment and this tip. Also can be used a different BNC socket with slimmer profile and then is no need to cut the board. I did it in my second radio with great results.
@@OM0ET can you share a link for this Connector, i orderd different types before, but there was all not usable .
73 de Henning
Just a tip when removing that ic. Do not bend it up on it's opposite legs for fear of damaging traces on the board. Simply bend a piece of solid copper wire in a u shape so that it fits all legs at the same time. Flood the wire around the ic and it will come away in one piece with no bending required!
Thanks a lot Paul. Amazing Mod!, for mine, I will put SMA as its small profile, Will also move LED somewhere else using cables. and surely will use wifi shield cable from old laptop. With Short wave ground matters!.
wow! very good soldering skills! thank you for a very detailed video, looking at how much work is being done i would love to buy the radio with a chip modification already in place!
Was looking for this video! Thank you. Nicely explained and executed
Thank you, my friend! I watched maybe all the videos about this modification, and this video is the best. I’ve done everything as you show, it took half an hour, and it works great! Thank you very much!
I am so glad that my video helped you 😉👍
I just finished my modification (simple version without second antena) and it works! Your video is very helpful, thank you.
What is meaning without second antenna
A few things to consider.
The second jumper wire goes across a cap. Isn’t there a potential issue of a short? I would use insulated wire.
Second thing: I can’t tell if those are transistors or diodes. I do know they melt quite well. For the viewer, I am talking about the little black devices with three contacts.
Be careful and mind your soldering iron.
Great video and cheers.
Exellent video, a lot of work, as i understood the modifacation is to make the radio ready for listening to amateurband with ssb.
Good evening Paul. Interesting video, but I don't understand everything. Secondary antenna without mass because only the central core is connected? Is the broadcast in uhf/vhf still possible or has this station become only a receiver? Thanks
I would suggest using a VHF/UHF antenna in the new connector when transmitting FM.
Dangerous unsoldering method, better use hot air or 2 soldering irons or melt from both side of the ic. And this is excellent guide video! Thanks a lot)
love these little mods. thank you
Greetings Paul from Venezuela, that modification is much better and easy to realize than the first one. Thanks for you dedication to explained us. 73`s my friend de YV2ESB.
It's just 73 without the s not trying to be rude
Well done and you have the hand of an artist. Nice soldering job, thank you for sharing!
Thank you very much! 😊
If you are new to this radio, first thing to do out of the box is to go into the menu and find the RESET function, choose ALL. Proceed with the reset, and for safety sake turn off the radio and turn it back on. Your radio will now have 10-1300MHz tx and rx frequency range. The only problem is not having the ability to manually enter four digits to the left of the decimal i.e. 1000MHz to 1300MHz. The cmos memory will be flashed back to factory defaults now. Nice trick Quansheng pulled to pass the radio by the FCC.
Excellent! Thank you so much for your efforts to demonstrate this.
Hi Paul, could you please tell me what is the difference between the IOTC SI4732 V2.0 module and the IOTC SI4732 V2.1? I've been looking for it for two days but I can't find it anywhere. Many thanks in advance. Vy 73, ha5cvz, op Miklos.
I have not this information, I am sorry.
Wow! Great as always! Ordered all stuff will repeat the mod ASAP!
Superb video, well presented in detail with good macro images. Thank you.
Thank you also for watching! 😊👍
M17/113-RG316 OD" 0.0980" about 2.5mm - not sure if too thick but thank you for video. Let my full call expire 40 years ago but I am retiring soon from my life as a Network Engineer so may reinstate my licence after watching your video
The MFG could sell a zillion of these radios if they did this mod and added $20 to the price.
Theu do make them finished that way 84.99 canadian mean while I can get the radio for 25 and mod for 15
@@jaycheeks7393 I paid $29 for my original radio.
@@jaycheeks7393 AliExpress might be who your referring too. I have seen them for $76 delivered to the U.S. I have only seen the single antenna on AliExpress and
the description talks about an antenna mod of some sort sounding like it improves the single antenna performance?
@@jaycheeks7393where can you get one already modded?
@@jaycheeks7393
Hi There, where can I purchase one with the mod already as you say?
Cheers
14:31 for the second jumper, a potentially cleaner option (if you have the parts) is to replace that smaller capacitor with an 0402 0 Ohm resistor.
Paul, I think you soldered the plus side of the speaker to the neg pad? you can use RG-316 coax
Yes
it doesn't matter what polarity is connected on a mono speaker
Hello, I am interested in the BNC connectors for a 27MHz antenna. Could you please share how to purchase these connectors? Thank you!
Thanks for the good video! I installed this board for reception on one antenna. Almost very bad! I want to install an output to a second antenna. In your video you didn’t show why at 144 and 433 MHz? Or is the station only an HF receiver after modification?
Sure, HF is only for RX. You can TX only on VHF/UHF after this mod.
Only shortwave amateurband ssb receiving, no tx
Amazing! Now I have started this project with the v1 module. I replace the choke by the screen also remove the ic chip. If I get v2 module what I have done does it make any difference? Thank you 73's
This is my question also
@@drabfab3014 I'm still waiting!
Just replace the V1 board for V2 board and leave all around as it is, except a little trace to tiny capacitor for antenna, this has to be scratched and connect an external antenna to this tiny capacitor. All other things are explained in the video.
You can also use the tiny coax used to wire laptop wifi cards to the small tab antennas, Amazon has these antennas cheap.
I have a question. At 38:14 in your video, you measure the grounding of a newly installed connector. In my case, the newly installed antenna connector does not beep at the center pole and ground. However, the existing U/V connector produces a beep between the center pole and ground. Is this normal?
Many compliments! good work! But with this mods it's possible transmit to HF frequency?
It is not possible.
I just had an idea.
Is it possible turn a insulated copper wire into a coax by wrapping it with a very thin single strand wire and covering it with heat shrink?
Regards ZS1MMB
After mod, my radio display everything but not receiving any signal. I think flexible board is fault. Because when I switch to normal mode 2m/70cm I can recieve and transmit using new antenna socket. When switch to mod system I hearing only some typical sound but it's dosen meters what mode or band I use. No any signal recieve.
Lovely, thank you! ❤
1. On your Alibaba link the modified radio is a K-6, not K-5. Is that all right?
2. What soldering kit would you recommend for beginners?
Thank you 🎉
I just hope they can make it transmit
I hope it will possible most probably with new chip and upgraded firmware!
This chip is only reciever.
Thank you Paul. Great work, great video.
The LED can be relocated to the base, or side.
Actually yes :)
Can the led be changed for a brighter one?
thank you for your video, does this upgrade works for uv-5r-plus?
Hello, dear Paul! Please tell me, if this module is installed without an additional antenna, do I need to change the coil and capacitor as in the first option (green module)? 73!
OM0ET , You did a Great Job on this modification... It's quite the amazing radio for sure...
I have a few one that is Modified with Firmware and one that is stock , as of yet..... Thank You
I would have liked to see the modification, HF performance without the second antenna port, with the telescopic antenna on the original, SMA port. Then perhaps the second antenna port added. I could easily do this modification. Would I do this modification? No, probably not. They obviously know this radio can be modified, why don’t they do it in the factory? Then sell it to the public? After seeing your first modification I thought they would release a factory version. How much is the modification board/kit?
AliExpress already has a modified UVK-6 radio station.
Great video. Not clear on why I need the second antenna? couldnt I just change the existing antenna to one better for receiving HF when I wanted to listen to hf? ANd with the CEC firmware dont you loose the vhf/UHF repeater capability?
The existing capacitor value won't allow what you're suggesting.
So the second socket is to bypass the filters on the factory antenna ??
@@MidlifeRenaissanceMan The capacitor he removes @8:24 is the one I'm referring to. Later he solders across its old location @25:54
@@garycook5125 One would think that makes the original antenna obsolete?
@@emavideo Correct, it is no longer connected. If you watch for a little bit after @25:54, he cuts the trace that originally led to the old antenna.
Great video. Looking forward to seeing how it performs. My expectations are low.
The magnetic field generated by soldering guns can cause issues such as leakage current or electrical leakage, especially in sensitive circuits.
Thanx for all the work. Greatly appreciated. Just a question please. If you had cut the Track/Trace that lead up to the Capacitor from the original Antenna, then it seems the original Antenna is not doing/going anywhere, as the new BNC antenns is connected accros the old Cap and going into the new PCB? So what use is the original Antenna? How is it still working. I have placed an order for the newer V2.5 PCB, from Banggood, but that Board has the connection to second Antenna IPX connector already mounted to it, and comes with Cable and SMA. Do I have to replace or still remove the Cap. If Cap to be replaced, then will both Antenna work, one for the usual FM Demod, and the new Antenna with the Modified, long press of the 0 button Mode, no FM Demod Mode? Hope you can help. Just also to confirm, that is not required to replace the Choke under the Screen, as per the Version 1. Many thanx.
Good job Paul, fun watching how clever you are..I should send my fine work to you to do now...Thanks
Thank you Thomas :)
Bonds " Q ". Thanks for the video. That's the 2nd telecoms short film I have watched today. Very good.
There is a new version of this chip, can you do a video on that please.
Thank You for great tutorial. It's masterpiece of Your perfect done mod. 73's 📻📡
Was there not an extendable mast antenna that would fit the old uhf/vhf fitting? That would make the modification a bit simpler. I was grinding my teeth when you were using the wire cutters as a nibbler on the circuit board to clear room for the new antenna. I hope the mod is stable. Thanks for the post, its on my d/l list. 🙂👍
The new build is amazing and i did not know they had a revision.
However , in respect of the strain being applied to the top casing with the weight and movement of the larger antenna(s) and adjusting volume etcetera with the two antennas . Unless they can be fixed to some pigtail arrangement i think it is more a proof of concept Paul.
Great breakdown of the mechanics behind this mod. 73
Rab MM7BVP
We see very good know-how, with useful skills for all those who want to devote themselves to radio and maintaining the equipment. TNX Friend 73 QROs from CN8MM
Thanks Paul for the great video, If go with two antenna option, will I be able to receive VHF UHF with single original antenna? or would I need two antenna connected always? In other words, Would this full mod separate the RX and TX Antenna? thanks
An answer to your question is in the video already ;)
Nice ,thanks for FB Paul, Why the new antenna connector without ground connection!! Yes, it will work, but only for vertical antenna !! I guess. Thanks again
What's the main difference between this and first mod?
Since you mentioned that hardware mod will allow us going below 18MHz does CB work only with firmware mod or a hardware mod is needed?
What is purpouse of additional antenna?
Can I add a SPDT switch before the capacitor, for first antenna and also on the path of 2nd antenna, so I can select between the antennas? (VHF/UHF and CB)
Thanks for awesome content man👍
Excelente video, muy bien explicado y muy completo, gracias por todo y felicitaciones
Great bit of Home Brewing , well done, it's great to see soldering Irons out again like the old days 73s M0DHA
Impresionante, tal como lo has hecho parece fácil. Lo que no veo es como se conmuta en la antena de 27mhz, mirare mas videos tuyos, a ver si aparece en otro. Un abrazo 72
Can I buy this radio with the mod and extra antenna installed? I have the money but not the time. Please advise…
Hello everyone.. after I successfully completed the mod (thanks to Paul)
I installed the CEC. It works very well. Do I now have to reinstall the
previously saved calibration file with flash?
Wonderful job.
👏🏻👏🏻👏🏻
Thanks for share with us.
73 from PU2SWR
🇧🇷🤝🏻
thank you for video ! i didn't see if you connect the BNC to the chassis ? is the black cable a coaxial ? in case of another antenna ? 73
No mention of the 'choke' under the screen?, or replacing the capacitor?
It's little wonder this is confusing, as there are so many variants of this modification. V1, 1.5, 2, 2.2, 2.5 and now 5, some single, some dual, and each with their own rules. The fitting is now the easy part, but figuring out what applies to each?, well.
When you put it to the first test on 20 meters the guys were speaking in Greek. 14.309 KHz.
This is an interesting mod and as others have said it would be nice if it was available with the mod from the factory. Was through my scrap box and did find some very fine coax line that is less than half the diameter of the RG174. Not sure of the impedance and it might even be for audio circuits. Would not really matter if just for receive. Now we will wait another decade to see if someone will come up with a cheap all band RX and TX small transceiver.
73!
Excellent tutorial video!!!! Thank you! Can this modification work with other firmwares?
No, it works with CEC firmware only
Ive heard you earlier Paul on my unmodified quansheng in Essex/South east of England on 50.130 and i was only using signal stick antenna@OM0ET
Hello Paul, greetings from Lithuania.Thanks for the interesting video.. I wanted to ask, if the shielded cable should be connected, where should the cable armor be connected? Thanks. 73 by LY5SB.
Please tell me the value of the capacitor that needs to be replaced
Hello and thanks for the video. My question is if this modification is only for yhe uvk5 99 or can it be done in uvk5 or in the whole uvk5 familiar?
Thanks again and 73
Klaus
CE2KVL
They are basically all the same radios. So it will work with all of them.
The one thing that confuses me is this.
If infact the factory antenna port no longer works after removing the diode, then why not just use the factory antenna port for one or the other antenna?
Good Job Paul 73's PD1MLB
Excellent video. Can this modification be done on a UV-K5 (8)?
Yes it can!
@8:31 I didn't understood this part. If I don't add a secondary antenna like you did in place of the LED, should I remove/desolder this fourth component or keep it?
I don't know about the HF, but I could definitely use SSB on 2m and 70cm.
Excellent Mod, Congradulations. I Could never have patience to do a mod. like that., Thank You.
Jaký je rozdíl v příjmu přes stávající SMA konektor oproti přidanému BNC? Zrovna moc se mi nechce vrtat druhý konektor, proto se ptám.
Z externej antény je lepší príjem a lepšia citlivosť prijímača.
Good day, thanks for the detailed guide. I see that different methods (options) of modification are appearing and the question arose, is it possible to connect (a working method) to this radio station a connection of a telegraph key, so as to conduct working communication sessions in a short range using the key for this..?! 73
Muito bom esse vídeo parabéns, Very good video, congratulations
Hi Paul, I installed this following your guide but skipped removing the cap for the second antenna mod, turn the radio and can access the chip with fn+0 (FM), but there's barely any sound and no reception. I can hear _something_ if I turn the volume up to 100%, it sounds faintly like a detuned radio with no antenna (pure white noise).
When I installed, I checked every connection with a multimeter continuity tester, I'm almost completely confident everything is installed correctly. Any advice on what might have gone wrong?
The video clip of the time you soldered the antenna disappeared and was discontinuous. I would like to know which terminals you soldered the antenna to on the original board. Could you please explain a bit? Thank you.
HI,
I followed your video and did the modification on a Quansheng UV-K5 (8). I had problems connecting the pad of the SI4732 V.2 board with resistor (the bridge with the shortest wire).
I destroyed the board pad and I attached the wire with some solder to the board without the pad.
The radio seems to work but I can't switch from dual frequency to single frequency and therefore I don't see the various options.
By pressing the 0 button the word "wait" appears on the video but the radio stops and you have to turn it off and on again.
Do you have some advice?
Thank you
Graziano - Italy
So I'm going to take a stab at this but I'm thinking of using "IPEX4 Patch Antenna Base 1.5mm 4th Generation IPEX U.FL MHF4 SMD SMT Solder U.fl/Ipex Connector for PCB Mount Socket Jack Female RF Coaxial Connector" to make the connection on the board and then a standard IPX to SMA lead and coming out the top of the radio SMA... this is the style of connection used in laptops for wifi and cellular... Thoughts? This would solve for a Coax lead (better shielding and grounding)
Impressive mod yes but how many folks are really going to do this. Add to this one really needs decent hand tools to carry this out, is it really financially viable? Why Quansheng can't just roll out the radio assembled with the board already. They've got themselves the next version of the radio.
Awesome as usual thank you..
Just wish there was a way to combine ijv and cec firmware
Wouldn't mind having a full band radio with 999 memory slots.. lol with a way to increase output wattage.. tidradio td-h8 allows up to 10 watt output..
Stumbled on to a Motorola clone that is supposed to be capable of tx up to 25 watts..
Apex 8000 . I need to do some more research on it .. to see what I can get away with..
wow thats a SICK mod well done
awesome video, i might just attempted this with the new boards
Wow, I really want to try this but it is beyond anything I have done before.
It's great that someone is thinking about Czech subtitles 🙂
I just made the mod, but after all I can't enter any frequency after pressing "FM". After "wait" apears, It's on "0" and I don't even get the top line of 20m,30m,40m,50m bands.... I don't know what to do. As much as I reset the device is the same, and I can not insert numbers in that menu, only the conventional menu. Help pleaseee
i did not understand a thing what are you doing to the devices, but i watched it till the end because it looks very interesting
Used this video as a guide to modify one of mine. Thanks!
Did it work?
@@OM0ET Yes :) But i did not do the extra antenna connector.
@TomHaslett yes, it is fine 😉👍
Great Video. From A to Z tutorial. So grateful!!❤
I’m just curious. Does this device use the ATmega microcontroller?
No, it's a clone of STM32G030.
This is a very good video showing the modification. Did you have other information beforehand on how the modification should be installed, or did you have to make it up yourself? 😊
Thank you. I have asked the seller for some more instructions
Very good master! thank you for this video, I want to make it myself too, but not sure I can do it so accurate like you)
My advise is to use a different socket, which has flatter surface and don't cut the board.
Thanks Paul! What is the main advantage compared to the first HF mod ?
louder sound, better reception
Thank you Paul. I think I had enough with the first version. I really don't want to ruin another HT as long as I have dedicated HF receiver. The reason is that the firmware concentrates on the HF function thus the VHF and UHF side has to suffer (lower tx power, fewer functions and settings, you are stuck on this firmware etc.). Many thanks for your fine instructional videos! 73 de YO6VSS.
19:24 🤬🤬🤬 i already removed that capacitor and lost it...😅 My bad. Anyway thank you for great tutorial! 👍👍👍
Hi paul , nice mod , an hirose ufl ipx1,ipx3 or even ipx4, both aliexpress or digikey have the combo pigtail + smd pcb connector, or as you told a recycled pair from Wifi router.
Hope hear you on Air also 73's EA1IFD.
Great job, very well explained as always, just one thing, once the mod is fitted and the radio is reset, what program is used to add channels and also if it is chirp, it needs a .py (python file) where can i get this file from?
No, for CEC the genuine program only can be used for programming, not Chirp