VER.1 - HF FULL BAND Mod. - Quansheng UV-K5 (Si4732 new chip module) 

purchasing link: www.aliexpress.com//item/1005006706890871.html

The guys at Quansheng must love this - all the free R&D work being done by the community to help make the next version of their radio. Now if it had a more powerful CPU and support for Bluetooth for audio & 'CAT' control :-)

I was holding my breath while you soldered that grain of sand - capacitor into position!

Amazing job especially the soldering

Thanks for getting the whole modification process on camera. The light and angles let the viewer see exactly what has to be done to get the radio receiving HF!

My eyes and patience are not what they used to be, or I would try this with one of mine. I like them so much that I want to keep multiple firmware's, so multiple radios. Thanks Paul.

Watched a few videos of this mod and decided to give it a try yesterday. I have a tweezer soldering iron which you can close on each side of the smd caps and resistors. This worked quite well but required careful placement as to not heat near by parts. I have a hot air gun that I planned to use on the eight pin IC removal but I was concerned that it might blow off the adjacent tiny parts. I used an exacto knife to score the leads at the package several times. You can press on the cut and snap of the leads. After that the remaining remnants can be easily removed with soldering iron. That tiny capacitor is smaller that I thought but I managed to get it installed. Happy to say that the mod is working. Thank you for the excellent video.

Great work on that modification .... It's an amazing little radio... tons of firmware out there as well.. Thank You

WOW Beautiful work! I used to fix printers and servers back in the day, if my resource controller handed me a bag with those capacitors I'd have sworn they'd messed up as I'd never even see them! Truly beautiful work 😮

This is awesome! I have two of these radios, but plan to buy more, since they are so versatile. Thanks for the videos!

Mr. Paul, your soldering skills are superb!

I salute you for making a BRILLIANT video ‼️🙏 Such a gift ❤. Thank You 💐

Thanks, you make it look so easy, great job

Paul i tip my hat to you for the solder job on the 100nu resistor without a heatgun. Never seen it done like that with such a good result. Bien fait!!

My kit arrived and was installed without issue thanks to your video. The radio now works with the original firmware, but since I have a Mac computer, I'm having difficulty getting the new firmware installed, but I'll keep trying.

Well done on the soldering. Great video

Super impressed! My Quansheng is sitting in the corner (in the box it came in) laughing at me! I got it mid way through last year but have done little with it as I became more interested in the frequencies you're demonstrating in the final part of the video. I guess I will have to find me an electrician capable of doing this modification. - Excellent video by the way!

Excellent video, really well produced. I really enjoyed watching it. Thank you.

Thanks, Paul. Great video!

Wow, amasing hardware and firmware mods. It totally changes the stock radio. Very cool, Paul. I dont know if i can do the soldering, but maybe I can find someone to do it for me. Thanks for sharing, my friend.👍🤠🇦🇺

In fact, there’s a big group on FB about the SI4735 chip, that lets you make a full-band, full-mode DSP receiver.

I didn't know they already made a whole kit for the quansheng, I've been looking into it for quite a bit and I do have another UV-K5(8) coming in tbe mail, I will definitely do this now as I think having a small HF listener would be pretty awesome 73

Thanks so much for the video. I just bought the board and it did not have any instructions. Now I can follow your video.

Veľmi zaujímavé, držím palce.

Trafopajka pobavila, letovanie smd s tym kolom prekvapivo zvladnutelne. Tiez radsej letujem (s vyrazne mensim) hrotom ako s teplovzduchom. Dobra praca.

Fantastic guide! I will be following this as soon as my kit arrives :) Thank you :)

Ah the surface mount. 20 years ago odd, working on this type of thing was my job. I gear due to my age and accompanying health issue my hands and eyesight are as focused and as steady as the once were. Great video.

nice job ! big thanks for this modification review ! i'm waiting for this !

Thank you so much for this very informative video, it must have taken you hours of patience in your research and practical demonstrations.

Nice job. You did it pretty well without any fancy micro-tools,

Many thanks and appreciation for your valuable efforts. We learned from you🙏👍

Great job, guy! You are my new god of soldering..

This is very interesting ! Good soldering work !

Fantastic video! Thanks for sharing this Paul! Best 73, Ben de M7FRS

I did enjoy this video. I don't think I can do this mod myself, my eyes and hands are not steady enough.

This is simply superbb mod 👌👌

Wow. Thanks for sharing. I am definitely going to try this mod!

Thank you Paul for this video. I can't wait for my module to arrive this days! ❤

Great technique soldering the wire-strand jumpers while still connected to the wire. That seemed to give to make it easier to have the wire sheath to hold.

For low audio I would recommend to connect the audio not on pin 3.4 but after two resistors, I use to short those 😊

Well done on a very neat job. You have great soldering skills. 👍

Amazing tutorial, I followed each step and worked! I coudn't do it without your help. Thank you and 73 from Brazil, PY5LM.

Wonderful Video you made and I really like it!

Exelent, and clean work.👍🏽

Definitely enjoyed the video. >Amazing job on the mod

Great job OMET just take your time job done ,,, first video showing the mod thanks for sharing

thanks for the video friend, i believe the next quansheng model will have the hf band standard in the radio menu....

Grettings Paul from Venezuela de YV2ESB, this video literally blew my mind 🤣

Thank you for your introduction and you have good soldering skills! This daughter board design is quite clever! Most of Japanese hamradios are, I believe, not well doing this size of micro soldering as we are OLD ;-)

That kit looks great Paul, i will get a couple ordered, Nicely done and thanks for sharing.

Been waiting for this to be videoed 👍 Be interesting to see how many views it gets...Thanks

Great video. Beautifully done.

Great Content, Thanks!

Nice job, good luck.

Well done! I respect professionals!

Paul great thanks brother

Amazing technic!

Thanks, I took your advice and ordered a kit from Ali.

Brilliant Paul....

Ordered the parts. It will probably be next month before they arrive.

Excellent thanks

Amazing job, thanks.

That's Fantastic 🙏 I'm impressed ⚡🙏⚡

Fantastic job, well done. A job normally done by robots.. 👍 👍 👍

great job, excellent video !

Vďaka moc Paľo za skvelé video. Toto je hoodne zaujímavé. Objednaný set TRX + PCB + kábel.... :) 73 GL

AWESOME!!!

Hello Paul, thank you for the video. I bought that kit and installed it yesterday. Fortunately it's running but the capacitor was a real challange ( I needed 3 tries 😂). vy 73

Great Job Paul as usual! 73

Thanks Omet I followed your guide and installed the Board I also have low.audio also 40 Meters RX seems deaf.

Just incredible!

Great video, Paul! Very thorough description, and the images are very clear. I guess now I need to buy another UV-K5 and the mod kit! hi hi Andy - K0ALS

Congratulations Paul de SV2YJ

wow amazing ✨

nicely done and explained! Great work! What temperature, solder paste did you use for this application?

Very impressive.

These make a very handy handheld multi-band receiver and VHF/UHF transceiver for the price. They don't do anything better, (or as well,) but they sure do 'more' than other handhelds. Ultimately we will be seeing cellphones with 'all band' receivers and HF/VHF/UHF all-mode transceivers all together in one package. As in decades past, hams are pushing the technology envelope for new products. It's good to see.

Спасибо за подробный рассказ, было понятно без перевода, буду повторять ...

Felicidades y mucho exito, saludos a todos en casa.

Very cool. I love the UV-K5/6. It's a bit of an expensive upgrade though. In my case, that chip board is half the price of what I paid for it. But I think i'll still give it a go. I wish someone would do some work on the firmware for the Quansheng UV-5R plus though because that radio is great. Super awesome video though, thanks.

I’m very grateful to everyone who made this project. CC-HF software and full band modification with a si4732 is just the great peace of engineering marvel. I can imagine how many hours, effort and love is used to bring this little Chinese radio to the next level..! I have one question about calibration. Is it possible to calibrate frequency on SSB permanently? I have to tweak BFO +680 in order to get clean usb signal. Problem is that I have to do this every time I turn radio ON because BFO is resetting when the radio is switched off .

Amazing what creative and capable people come up with ... by the way you should have soldered the big resistor-alike looking inductor with shorter leads, which is one of the many reasons why everybody is using SMD technology, avoiding unnecessary cross talk - since it seems to be going towards ground it should be easy to do that. Thanks for showing this so very well visually and verbally documented process - great work.👍 With all the extended wiring and with that additional capacities does it still operate on UHF without signal degradation? I also love to tinker with radio related stuff all my life and that is why I smiled when seeing this, turning the cheapest Chinese FM radio into an all-mode HF receiver, though as a serious HF enthusiast you question yourself why not spend a few bucks more and get like e.g. a Malachite SDR or Chinese clone and also have a tiny portable HF receiver with serious performance for a device of that size and it is also capable op listening even up to higher frequencies. I guess here this is more a proof of concept that stuff like this, which was unthinkable 20 years ago, is now possible due to the digital backend, relatively capable processor/controller and most of all some very capable people who created these hacks showing us this new dimension of mods. 🙏 This definitely leads us to realize that there will soon be way more cool stuff to come ... like dedicated handheld transceivers that do all this with high dynamic SDR front-ends while being able to send AND receive from HF to UHF in all modes that will come close to the quality of big and heavy traditional transceivers.

sophisticated idea, 👍🏼❤️

Impressive mod. I wish I had the skill set to be able to do that. Like n sub.

mantab bisa ditiru

From Indonesia.. Good Job..

I am shure you have looked at "TRX Bench`s" Or "TRX LAB" vidios about fixing radios, Paul. Nice fix! The best from LB1NH Arild 🙂

Great work. A little too fine for my solder skill.

Pretty good work73

thanks for the great video

At 15:17 into the video. Your checking the continuity. I can't tell if your bridging from the top of the board to the main board or somehow you where able to solder from the bottom of the MOD board to the top of the radio's board. How did you solder the 8 spots from where the 8 pin chip used to be ? Thanks

Superb job Paul and great content as always, well done, 73 de G0VCW

Bravo!

20 minutes + some Canadian dark rum after long exausting work day. Set your solder about 400C to remove old choke. Works like a charm. Don't need to remove screw, just solder the new choke closer to bttns and bend 45 degree to soldering point. Plenty of room there.

Hey buddy, great video. I have a few questions for you. What firmware version are you using? Is there any effect on transmitting for the existing frequencies that this radio is capable of transmitting on? The aim for me is to have extended receive but retain full transmission capability. Can you do a video testing power and spurious transmission? Now that you have done the upgrade are there any lessons learnt I.e. any things you would do differently?

excelente video

Hola, muy buen video, gracias!!! te queria preguntar primero cual firmware instalar para que tenga todas las frecuencias? tu subistes 2, pero cual de ellas es?, saludos

At 4:32 you show the removal of the lock nut on the antenna connector. I have two of these radios and that lock nut is below the plastic case (against the chassis), not on the outside. It does not need to be removed since it is inside the case. In fact, it cannot be removed since the hole in the case is smaller than the nut. It is not used to hold the plastic case and the chassis together. This may be a manufacturing mistake but I thought to let everyone know.

good vid - thanx! only 1khz Steps in SSB as minimum? And did you tried 2m SSB? and which/where to get that zoom/magnifying monitor? ;-) vy 72

Excellent!