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UK FM CB radio servicing
United Kingdom
Приєднався 9 сер 2013
I run a small electronics business specializing in the repair & servicing of UK (legal FM only) CB radio equipment, aimed at the trade. I also spent about 16 years in professional business 2-way radio. I have heard & read so much rubbish, myths & legends about various CB radio makes & models that I decided to launch this channel. Each model I choose will have a videos made about it. Firstly, servicing the the radio, using where possible manufacturers service manual. The second video is an air-test standardised demonstration, where our test vehicle drives just over six miles away in the "wrong" direction. We have three service benches here all with very different test equipment. Every CB radio that leaves here is spot on with reference to the manufacturers service data. I hope you will enjoy, find fascinating & informative the usually 'trade only' videos that are building up as different sets come in for repair & alignment
This is an SSB free zone!
Richard Shireby, G0OJF May 2020
This is an SSB free zone!
Richard Shireby, G0OJF May 2020
Danita 440 PR27GB CEPT FM CB radio - On The Air test
After servicing this CEPT FM only set from around 1985-1987 it was timebto test it.
Full power was 3.8W on this radio. Rceive was around 0.36uV for 12dB SINAD.
Richard, G0OJF
Richard, 2E0FKC (Mr Chippie)
As usual, Mr Chippie drove along our 6-mile 'difficult terrain for radio' test route. He stopped at the 5-mile point to conduct a static test. Power was checked at 3.8W.
Our continued thanks to Thunderpole for kindly supplying the T3000 radio we use in the test vehicle at no cost to us. This is the sole reason for the 'paid promotion' flag on this video.
Lincolnshire, UK
Ebay stuff www.ebay.co.uk/usr/g0ojf
rshireby@yahoo.co.uk
Full power was 3.8W on this radio. Rceive was around 0.36uV for 12dB SINAD.
Richard, G0OJF
Richard, 2E0FKC (Mr Chippie)
As usual, Mr Chippie drove along our 6-mile 'difficult terrain for radio' test route. He stopped at the 5-mile point to conduct a static test. Power was checked at 3.8W.
Our continued thanks to Thunderpole for kindly supplying the T3000 radio we use in the test vehicle at no cost to us. This is the sole reason for the 'paid promotion' flag on this video.
Lincolnshire, UK
Ebay stuff www.ebay.co.uk/usr/g0ojf
rshireby@yahoo.co.uk
Переглядів: 155
Відео
Danita 440 PR27GB CEPT FM CB radio - service alignment
Переглядів 3034 години тому
Well I've never seen one of these sets before from around the 1985-1987 era, Anyway, we ended up with about 3.8W output & good receive sensitivity. Recorded 31st January 2025 Richard, G0OJF Richard, 2E0FKC (Mr Chippie) Lincolnshire, UK Ebay stuff www.ebay.co.uk/usr/g0ojf rshireby@yahoo.co.uk (C) Tango Systems Group 2025
Midland 28 CE MultiNorm EU/UK FM/AM CB radio - On The Air test - New 2025 set
Переглядів 1674 години тому
Here's a brand new radio for 2025 costing 130 Euros. Well made, but can I find any menu for adjustment....no. So the factory set 2.9W on UK channels & 3.2W on CEPT is how it is. Deviation is low at 1.8Khz. Receive is an excellent 2.6uV for 12dB SINAD. At the 5-mile point, Mr Chippie stopped & we tested the radio on the CEPT band in both FM & AM before returning to the UK FM channels. Our contin...
Audioline 341CB27/81 UK FM CB radio - On The Air test (farm set)
Переглядів 2047 годин тому
This venerable 1981 Uniden made set came in for repair stuck between transmit & receive. Repair & servicing were on the previous video. Had this been a hobby use radio, the dreadful blue LED in the meter would have been replaced with the proper bulb. However, on radios in commercial use such as this set....I just leave things like that unless specificallyrequested to change such things back. Fu...
Audioline 341 CB27/81 Uk FM CB radio - repair jammed both in tx & rx
Переглядів 5289 годин тому
Here's a farm radio which is in daily use. Doing TX & RX at the same time. Recorded 29th January 2025 Richard, G0OJF Richard, 2E0FKC (Mr Chippie) Lincolnshire, UK Ebay stuff www.ebay.co.uk/usr/g0ojf rshireby@yahoo.co.uk (C) Tango Systems Group 2024
Midland 28 CE MultiNorm EU/UK new CB radio - review
Переглядів 67612 годин тому
Here's a brand new radio for 2025 costing 130 Euros. Well made, but can I find any menu for adjustment....no. So the factory set 2.8W on UK channels & 3.1W on CEPT is how it is. Deviation is low at 1.6Khz. Receive is an excellent 2.6uV for 12dB SINAD. I covered the lower Midland 18 model about ten days ago...basically the same chasis. Recorded 28th January 2025 Richard, G0OJF Richard, 2E0FKC (M...
Binatone 5-star CB27/81 UK FM CB radio - On The Air test
Переглядів 36012 годин тому
After extensive work sorting out this previously messed with flagship radio from 1981, it was time to test it. Full power was 4W on this radio & low power was 410mW. receive was around 0.21uV for 12dB SINAD. Recorded 27th January 2024 Richard, G0OJF Richard, 2E0FKC (Mr Chippie) As usual, Mr Chippie drove along our 6-mile 'difficult terrain for radio' test route. He stopped at the 5-mile point t...
Binatone 5-star CB27/81 UK FM CB radio - electronics restoration & alignment
Переглядів 69914 годин тому
Another top-of-the-range Cybernet 134 radio that's had the kiss of death with an illegal 80-channel modification. By the end of the video, there was just slightly low TX deviation to get to the bottom of...and find out why low power isn't working. I'll explain what turned out to be the snags during the 'on the air' video; hopefully tomorrow. I ended up with a full 4W output on transmit & an exc...
Sony CCD-TR45E 1991 Video 8 camcorder restoration Pt1
Переглядів 25719 годин тому
Some of you will know that throughout the 1990's, the Sanyo SMD electrolytic capacitors used in Sony, Canan & Sanyo camcorders started to leak & fail after about 5 years. There is nothing for it, other than to set about & change all the capacitors. Some of these products have 80 or so. Clearly it's very time consuming & it leaves you with a still pretty worthless camera after repair. As I want ...
Harvard H646 CB27/81 UK FM CB radio - On The Air test
Переглядів 26619 годин тому
These were recycled Spinnytronic CB199 radios that had been returned to Littlewoods catalogue group. They were sold in to Harris Overseas Ltd who repaired them & rebadged them as Harvard H646. These radios use the clone version of the Cybernet 002F chassis & were made in Hong Kong. Full power was 3.9W on this radio & low power was 520mW. receive was around 0.37uV for 1dB SINAD. Recorded 24th Ja...
Harvard H646 CB27/81 UK FM CB radio - service alignment
Переглядів 44221 годину тому
The Harvard H646 was created from mail order returns of the Spinneytronic CB199....a set using a fake version of the Cybernet 002F radio chassis as used by the Mustang range of sets, the Nato 40FM, the Harvard H402 & H404/H407 base stations & many others including the genuine & fake versions of the Amstrad CB901. In this video,I end up with the radio doing 3.9W & with good receive at 0.35uV for...
Amstrad CB901 CB27/81 UK FM CB radio - Japan genuine version - On The Air test
Переглядів 68921 годину тому
Here's a genuine Cybernet 002F in the form of a Japanese built Amstrad CB901. These usually have exceptional sensitivity...far & away better than most current models. This one was doing 3.8W & sensitivity 0f 0.25uV for 12dB SINAD. Recorded 23rd January 2024. Tomorrow we'll have the fake version as a Harvard H646. Spinneytronic CB199 rehash. Richard, G0OJF Richard, 2E0FKC (Mr Chippie) As usual, ...
Amstrad CB901 CB27/81 Uk FM CB radio - service alignment (made in Japan)
Переглядів 58821 годину тому
Here's a 1981 Cybernet 002 chassis, this time as an Amstrad CB901 (made in Japan genuine version). I ended up with 0.23uV for 12dB SINAD receive & transmit at 3.8W. Recorded 23rd January 2024 Richard, G0OJF Richard, 2E0FKC (Mr Chippie) Lincolnshire, UK Ebay stuff www.ebay.co.uk/usr/g0ojf rshireby@yahoo.co.uk (C) Tango Systems Group 2024
Jesan KR200 CB27/81 UK FM CB radio - on the air test
Переглядів 275День тому
These 'also ran' radios were available around 1988-1990. Recorded 21st January 2024 TX output was 4W on full power, 0.5W (preset) on low power.Receive was a 'not too good' 1uV for 12dB SINAD. Recorded 17th January 2025 Richard, G0OJF Richard, 2E0FKC (Mr Chippie) As usual, Mr Chippie drove along our 6-mile 'difficult terrain for radio' test route. He stopped at the 5-mile point to conduct a stat...
Jesan KR200 CB27/81 Uk FM CB radio - Extensive retune & test
Переглядів 461День тому
These 'also ran' sets appeared around 1989-1990 & were in the UK era of possibly the worst time for only cheaply made sets being available. By 1994, the updated UK specs came with a minimum receivespecification & a higher transmit interference standard than before. These later sets type approval was PR27/94. This paved the way for 80-channel UK/EU FM radios under PR27/97 type approval. I recall...
York JCB863 CB27/81 UK FM CB radio - On The Air test 17jan25
Переглядів 26314 днів тому
York JCB863 CB27/81 UK FM CB radio - On The Air test 17jan25
York JCB863 CB27/81 UK FM CB radio - repair , demodify & re-align
Переглядів 70114 днів тому
York JCB863 CB27/81 UK FM CB radio - repair , demodify & re-align
Midland 18 CE MultiNorm CEPT/UK New CB radio - On The Air test
Переглядів 37614 днів тому
Midland 18 CE MultiNorm CEPT/UK New CB radio - On The Air test
Midland 18 CE MultiNorm EU/UK new CB radio - review
Переглядів 73914 днів тому
Midland 18 CE MultiNorm EU/UK new CB radio - review
Realistic TRC2005 PR27GB CEPT FM CB radio - On The Air test
Переглядів 20821 день тому
Realistic TRC2005 PR27GB CEPT FM CB radio - On The Air test
Realistic TRC2005 PR27GB CEPT FM CB radio - service
Переглядів 49921 день тому
Realistic TRC2005 PR27GB CEPT FM CB radio - service
Alba CBM5 CB27/81 UK FM CB radio - On The Air test
Переглядів 20221 день тому
Alba CBM5 CB27/81 UK FM CB radio - On The Air test
TTI TCB1100 CE MultiNorm CB radio - On The Air test
Переглядів 28021 день тому
TTI TCB1100 CE MultiNorm CB radio - On The Air test
TTI TCB1100 CE MultiNorm CB radio- service alignment
Переглядів 49221 день тому
TTI TCB1100 CE MultiNorm CB radio- service alignment
Fidelity CB2000FM CB27/81 UK FM CB radio - On The Air test - 3Jan25
Переглядів 30421 день тому
Fidelity CB2000FM CB27/81 UK FM CB radio - On The Air test - 3Jan25
Maxcom 4E CB27/81 Uk FM CB radio - On The Air test (set 2)
Переглядів 22521 день тому
Maxcom 4E CB27/81 Uk FM CB radio - On The Air test (set 2)
Maxcom 4E CB27/81 UK FM CB radio - service (set 2 of 2)
Переглядів 40428 днів тому
Maxcom 4E CB27/81 UK FM CB radio - service (set 2 of 2)
Maxcom 4E CB27/81 Uk FM CB radio - On The Air test (Set 1)
Переглядів 23728 днів тому
Maxcom 4E CB27/81 Uk FM CB radio - On The Air test (Set 1)
Fidelity CB2000 CB27/81 UkFM CB radio - service & alignment (Cybernet134)
Переглядів 653Місяць тому
Fidelity CB2000 CB27/81 UkFM CB radio - service & alignment (Cybernet134)
Maxcom 4E CB27/81 UK FM CB radio = Service alignment
Переглядів 442Місяць тому
Maxcom 4E CB27/81 UK FM CB radio = Service alignment
Hi I made one to day I did put sleeving on my earth
CEPT was legalised in the UK on 1 September 1987….so it’s definitely not before that date.
I had one with an es880 could get out over most of Norfolk.. fantastic in the lorry.
Good audio and signal around the Scratchy corner route and at five mile point and for CPT was just readable passing Rauceby Services.
Hi Richard, where did you find the manual and schematic? I have a Danita 340s and have not been able to find anything so far. Thanks, John.
From Danita's website, which I found immediately with "Danita 440" as search criteria. Richard
Hi Richard, Manual found by searching for "danita 340 (old version)". Unfortunately no schematic. Thanks, John.
@ Email me & I'll send you a copy of this back as an attachment. Richard
That worked very well after the SO 239 clean audio was nice and clean as well.
Yes, that doesn't always show up on the test gear which is why real tests are important. Richard
hi richard I always enjoy your air test also best wishes to you and mr chippy from paul chapman at east sheen 73's
Thank you Paul, Richard
@ukfmcbradioservicingTango21 to richard it is always to enjoy your video on radios and I enjoy your air test as well from paul chapman at east sheen 73's
comitel A/S denmark made them. Market(s) / Approval(s). Denmark Telestyrelsen: CEPT PR-27/DK/9205 Finland CEPT PR27SF Norway PR27N Sweden Telestyrelsen: CEPT PR-27S Ur920174 United Kingdom CEPT PR27GB
Ain't seen one of those before neither but seems a decent set, and it will be an interesting Scratchy corner test.
A good signal throughout the Scratchy corner test and on all modes at 5 mile point, audio readable but once again sound quality of talking down a toilet roll tube.
That's like the old 70's American uniden chassis with the hole on the main board for the speaker. Strange design for a newer set.
Hello Richard, thanks for the tests of the new Midland 28. I do like the Thunderpole T-3000 you have in the car, I own one too (I reviewed it last year) and it was certainly close to the best AM/FM set I tested in 2024. Cheers Dave , North Lincolnshire. 🙂
Thanks for sharing. Richard
Hi richard good luck servicing &alignment the danita 440 pr 27gb cept fm cb radio from paul chapman at east sheen 73's
Thank you Paul, Richard
@ukfmcbradioservicingTango21 to richard you are most welcome From paul chapman at east sheen 73's
I think Midland should just give up. I have said this before, if the radios all done 3.5 watts, +2 Deviation out the box they would be worth collecting. 2e0deq.
So bad it almost sounds off frequency on that base station test.
Maybe it would be better without the "new improved" microphone? But probably not.
Compared to older models its a waste of money.
correct. Richard
A bigger screen for those of us with old eyes.
Juzs bring back LED double digit dispays we can all see! Richard
Another radio not worth buying. Sorry midland you’ve made a mess of these new sets. No way to adjust anything , no detailed instructions or information on the set’s performance. Im sorry but thats just poor. I’ll stick with the 48 or 78 pro
hi richard I always enjoy your air test also best wishes to you and mr chippy from paul chapman at east sheen 73's
Thank you Paul, Richard
Too nice for a tractor cab ! Just thinking that the mic comparison would be better at the 5 mile point as the weaker signal woukd enable different qualities to be heard ?
We didn't do a mike comparison on this set. The factory original mikes supplied with the Uniden & Audioline sets lacked treble & result in poor readability. When they pop up, we do demonstrate them. I'll think about what you said though....it is a valid comment. Richard, G0OJF, UK
I’ll never forget the smell pulling those caps out of camcorders!
It's awful. I went in the back workshop & wondered what the dreadful smell was. I remember (not fondly) the selenium EHT rectifier failure smell in television sets...cat pee. Richard, G0OJF, UK
@ I forgot to mention that the purple caps may be OS-CON solid electrolytic ones with very low ESR and higher reliability than the other caps. Maybe they will still be okay but must confess to not encountering anything using them at that age in recent times to offer practical experience!
@@graemedavidson499 I'll see what the service manual specified. Richard
Worked great all round the Scratchy corner test with good signal and audio.
Good evening Richard. This is my cb radio thankyou ever so much for the quick turn around and a smashing Job I really do appreciate it as always so thankyou ever so much. I also brought it with that led bulb in it wasn’t my own choice :)
Thanks Dylan. You never know, it might come in for service again in a few years & you'll ask us to change the LED back to a proper bulb! Enoy yourself. Richard
I can’t imagine tractor drivers are giving each other signal reports whilst they are working the field, so the signal meter is pretty much irrelevant in that setting.
correct. Richard
Terrible lag on key up
Yes, a good indticator of things to come. New current sets are all like this or worse. Richard
One thing I always noticed was that Uniden radios seem to have far fewer components inside than a Cybernet, despite both being of similar quality.
Because they were designed and built properly in the first place where as the cybernets needed link wires from one end of the PCB to the other. I am pretty sure the Cybernet 134 board was derived from an older AM/FM set as well.
Look at 3.37 and you can see what was loose inside. The piece of cardboard will certainly help, but I would have removed all the bolts. Good job.
I'm assuming that's how they currently mount it. If it were a hobby radio I'd remove the hardware, but not on commercial use sets. Richard
Hi Richard, In that case, hopefully they'll leave the cardboard in place. John.
Hi richard I always enjoy your air test also best wishes to you and mr chippy from paul chapman at east sheen 73's
Thank you Paul, Richard
@ukfmcbradioservicingTango21 to richard you are most welcome I was hoping that you would tell mr chippy that I used to have a audioline 341 cb radio from paul chapman at east sheen 73's
@@paulchapman1175 I did tell Mr Chippie....and he also reads the comments. Richard
@ukfmcbradioservicingTango21 oh ok fair enough from paul chapman at east sheen 73's
Hello, I have the same receiver but the knobs have been changed. I want to put back some knobs that are as similar as possible. What is the diameter and height of the original knobs? I think the tuning knobs have a larger diameter. Regards, JM - CT1BRM
Really interesting to see, an awful lot of components on those boards though. I'll look forward to seeing the next video.
Nice speedy diagnosis of the Rx Tx fault and replacement transistor and its all ready for Scratchy corner and its return to work service.
On the farm where i am my colleague runs a maxcom 4e and i use a Cybernet 3000... although we do mix and match various radios for fun ...the farm environment is a good test of a radio as it can be quite harsh and we have found the old 27/81 rigs are very robust and can take some real punishment,they certainly were built very well .
Good old skip interference.
Nice job Richard
hi richard good luck repairing the audioline 341 cb 27/81 uk fm cb radio also I used to have one of these radio from paul chapman at east sheen 73's
Thanks Paul. Roger on you having had one - they are very good radios. Richard
iv still got one of these with a power desk mic and eco chamber lol still in working order is the old cb radio still getting used today
This one is in daily use on a farm....all the radios they have are the same model. Richard
Interesting fault. 2e0deq.
A very poor new offering from Midland. I find the new President rigs significantly better. My President Harrison 2 is excellent. I note that you got good results when you serviced the Barry and the Bill as well.
😍
I wouldn't waste anymore money on modern rigs Richard they just seem to be going down hill 😒
Yes, I think that's the last. Richard
@@ukfmcbradioservicingTango21 They just seem to be getting less and less serviceable and more of a chuck away world the trouble is if it went wrong it would probably cost just as much to mend it as would to buy a New one which is a shame especially if you have looked after it
Hang on.. 37 min 30 sec - someone actually using CB for a sensible purpose on a sensible channel?! It'll never catch on..
Hi Richard, I'm enjoying your videos but i listen mostly with headphones and there is quite a bit of hiss on the audio. Just wondering if that is something you could improve. Cheers 👍
Probably the valved microphone pre-amp combinimg the four Shure SM57 microphones. I could always try one of those cheap Chinese USB microphones....but then mono would only come out of the left channel & I record this in stereo. What would you do? Richard
@@ukfmcbradioservicingTango21 It MAY be a sensible idea to just dump the current mic pre-amp and buy a nice shiny fancy new one and reap the benefits.
So, just as bad as the other one (though you've listed this as 18 not 28 in the title) ... Definitely one to avoid, but I still much appreciate the review.
Title corrected, thank you. Richard
Interesting set but no adjustments will see how it does on the Scratchy corner test.
A 5Star performance around the scratchy corner test and at five mile point and was reasonably readable passing Rauceby Services, on the subject of people making legal radios illegal one theory may have been a disguise in a legal chassis so if the man from Whitehall came knocking they would say its not me this is a legal set rather than have an illegal set on the bench they would have to hide.
hi richard good luck reviewing the midland 18 ce multinorm eu/uk new cb radio From paul chapman at east sheen 73's
Thank you Paul, Richard
@ukfmcbradioservicingTango21 to richard that is ok from paul chapman at east sheen 73's
Yet again another disappointment with no way to improve deviation and output power . I think I’ll keep my money or alternatively buy a 48 or 78 pro that does have adjustments . Midland please do better
Yeah I don’t get that either, like you said go and buy an illegal rig, I had a Bentone ***** and loved it. Great job again thanks to you both.🇬🇧👍👍
Still got mine that I bought on 'L' day in 1981. Still works a treat and, dare I say, cosmetically in pretty decent condition!