G4NSJ - R209/2/B Reception set valve tube communications receiver. Part 1
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- Опубликовано: 1 окт 2024
- Part 1. The R209/2/B Reception set is a compact valve communications receiver covering 1MHz to 20MHz in 4 ranges. The set will run from 220V 110V 24V or 12V. AM FM CW. In this video, I look around the chassis and track down a strange fault. Part 2 coming soon.
Good day Ray, great to see you again on another interesting video.
These ex-military hardware had been build - literally - like a 'tank' and possibly were used inside army vehicles, or perhaps even planes?
It's always a challenge to work out what's what but, the good side of it is, it keeps our older guys brain working looking for answers.
Once upon a time, you could get old ex army sets (similar to this), from disposal stores but now they have become a rare find.
73 s from "down under'" VK2xxx (Arthur)
Hi Arthur, great to hear from you. These old radios certainly are good for keeping my brain working. I like a challenge, which is just as well! I’ve been working on it a little more since the video and it’s now sounding great. Cheers for now, Ray.
My favourite bit of this video is your enthusiasm and ridiculous amount of knowledge Ray. I always enjoy your uploads. Hope you’re well
Great to hear from you. Thanks for your lovely comment. Cheers, Ray.
@@g4nsj Ray, you should team up with Lewis. His channel brings amazing stories like yours from the past.
@@TRIPPLEJAY00 thanks, I’ll take a look.
I suggest that you could maybe, one day do a video on basic radio maintenance for the likes of me and a few others. Just a suggestion . Thank you Ray. 73 Lee.
Good idea, Lee.
great idea
Quite appropriate that a man named Ray works on ray-dios.
Lovely radio Ray, as you mentioned GWM's that puts a smile on my face as I type this I'm looking at an old Pye Westminster bought from them and rocked up for four meters by the late G3ZMF and still working well, I'll have to test my Cambridge next. Cheers Ray.
The Pye Westminster was a lovely radio. I also bought one from GWM back in the day. Cheers!
Excellent video Ray, I'm only familiar with more modern radios but the old equipment is absolutely fascinating. Keep up the good work.
Thanks!
As always a very in depth presentation and interesting information on this old set Ray, please make another video showing your further diagnosis on the faults..73s G7WBB
Yes, I will make a further video.
Great video.Very informative.I have an old Eddystone 680X which works but I suspect not as well as it should.Anyone in the Midlands area who is familiar with these Eddystone radios?
I rember in the 1980s my uncle who worked at a navy base gave me some obsolete resistors and capacitors each individually sealed in tiny polythene bags e with Mod part number and description in the small hermata ..... water resistant bags some hand written. Those capacitors in that radio are very similar.
Yes, I believe they arer the same caps. They were very popular back then.
Very interesting receiver Ray. Good luck with it.
Thanks!
Hi Ray, grest to see you again. Bravo!
Thanks!
Well done Ray getting it working....g4vvq
Thanks, Fred. It needs quite a bit more work but it will be worth it.
TNX Ray Those were the days brings me back to the old communication RX and TX vintage military good video as always 73 de G6JMX
Thanks, they were great days!
Very interesting receiver Ray. Thank you for sharing the manual via your web page. I see R60 from AGC line feeding G1 of V1 (rf amp).
I suspect that this problem is also related to the AGC as you had in the IF strip. Looks like there are THREE valves (V8, V10, V11) that all have diodes in them. You'll get this one working perfectly I'm certain. Looking forward to the follow-up video on this receiver. "Keep calm and solder on." 73 OM
Great to hear from you. The AGC voltage is looking good. There will be a follow up video… hopefully! Cheers, Ray.
An amazing radio!
Lovely stuff thank you.
👍
Hello Ray a Wonderful RX I never seen R209 RX in Australia I didn’t collect Army equipment it look like excellent RX they could be about in Australia but as I said I haven’t seen one Ian Vk2IJ,
It is a great little receiver. Unlike most army gear, it doesn't take up half the shack!
Great video. When I was first licensed ( G8HVD ) I used one of these receivers as Tuntable IF for my home built 2M converter. The combination worked really well .A bonus having FM. Look fwd to next video, cheers.
Thanks, glad you liked the video. Cheers, Ray.
M0MBG Nice Radio another great video. Have just fully renovated a Yaesu FT 200 Transceiver.
Happy Days. We can have all the new stuff, but working on the older equipment is a challenge and satisfying when it all comes together 😁
It is satisfying. Part two will be ready in a couple of days. Well done on the Yaesu! 👍
Just seen your latest on the R209/2/B. Yes these DK series of valava are very delicet .Glad you have it working now with the replacement for the replacement valve, Im currently working on collins R390. 73 paul.
Hi Paul, OK on the collins R390. Good luck with the project.
Nice one Ray. Not seen one of these before.73 Paul, G0MIH, HS0ZLQ.
Hi Paul, I've never worked on one before. I'm getting there, though. Cheers, Ray.
Fantastic interesting informative video as always Ray. In Liverpool where I live there was an electronics shop called Super Radio, I was always in there as a young lad back in the late 60's early 70's, my mum and dad bought me an R107 for Christmas in 1969 but I notice at the time they had lot's of R2O9 receivers in stock for sale and they still had some for sale up until they closed down for re-development of the town center (bad move) in about 1975, I would of loved to have had one of those at the time but never did get one, keep up the good work.
Regards
Dave.
G8HTF 😀
Hi Dave, great to hear from you. I remember them for same but,. like you, I never owned one. Cheers for now, Ray.
Hi Ray...those old rigs were certainly built to last! 73's...Phil
@@philhenzler5308 they certainly were!
Well Done!! Looking forward to part 2.
73 de WB6AGE
Should only be a couple of days.
Hi Ray, good to see you. Thats a nice little gift, lol. Kept the old grey matter ticking I bet. Thanks for showing it to us, I'd love to see the follow up too please.
Thanks 👍
I think Medium Wave is mostly empty today. UK has been shutting down transmitters in last few years.
Yes, you're right. Such a shame.
Great video Ray. I hope you get the RF amp working and do a followup video. 73 Joe
Follow up video coming soon.
I remember GWM had a load of B40 receivers (some still in their boxes) around the time I used to go there.
Hi Charles, I think I remember them in their boxes. I had a B40 which worked very well. They were huge radios that weighed a ton! Happy days. Cheers, Ray .
@@g4nsj Yes a nice compact receiver that R209. Remembered the Murphy B40 from my days in the school radio club @1972. So recently purchased one to restore. It's making its presence felt in the corner of my man cave. I have a couple of small projects to finish first and then i'll don my supports to lift it onto my bench. Proper boat anchor.
@@bofor3948 I had a B40 back in the 60s. Great receiver, although rather big and heavy! Cheers, Ray.
Lovely radio Ray!
Thanks!
A nicely made set and a very interesting video. Looking forward to the follow up. Will be good to see how it turns out with the new valve.
I’ve started work on the follow up video. Valve should turn up soon.
A fascinating video. I am looking forward to Part 2.
Part 2 in a couple of days.
Nice rig, Ray. Reminds me of my Angry-9. Cheers
👍
lovely set👍😀
👍
Lovely old radio, lovely presentation as always!
Thanks!
Ya gotta love that Ray's "Beatle" hair👍
👍😂
Looks like it was built like a tank Ray a very nice looking radio indeed with a rather unusual design. The nearest I got to working with old military radio's, was in the 70s when I was an SWL, with a CR100 and PYE 62 set on Top Band and on that not to mention band lol! Always nice to see this old gear, thanks for putting together this interesting video Ray!
I love the 62 set. I still jhave a CR100 which I use quite often. Cheers, Ray.
@@g4nsj OK Ray about the 62 set. I also have a CR100 from my SWL days, but it's not in working condition now. It would be a real mission trying to get it working now, with the old valves and it's weight. I used it a lot on Top Band in the good old days, great for AM and loved the way it tuned around the band. Audio quality was great as well on a big speaker. Fond memories of tuning in Loran on 160 and the AM mobiles on the CR100!!
@@mattbates6887 It would be lovely to get the CR100 working again. They are great radios! Cheers, Ray.
Lovely little radio.
Thanks!
This was state of the art in 1951. Curious how IF AGC seems to be derived from output stage audio level instead of detected carrier level. I guess that has advantages when listening through phones. SSB sounds fine through CW mode & BFO. If there's no XTAL filter the IF will be carefully staggertuned. I wouldn't replace the selenium rectifier if it's working fine, they are much quieter than silicon too. I guess for plug in modules there are extender adaptors if want to probe while live. The RF front end, if it really is meant to amplify and not just isolate the antenna, is it because a tuned RF preselector isn't set right?
Yes, it really was state of the art. The new valve has arrived and the RF stage is working well, it’s come to life! I’ve realigned the front end so the IF stages will be next.
@@g4nsj With that increase in gain it must be tempting to also try out each the IF slug screws and see how much more gain there is. Many people would switch to FM no antenna and peak each for maximum speaker noise wrongly thinking 'more is better' as if that's a good thing. A nice flattish top response SSB crystal filter has a cleverly staggered alignment and has an intentional insertion loss.
@@jagmarc I will do the IF alignment at some stage with a signal generator. I don't think the IFs are staggered. More coming soon...
@@g4nsj If the radio is destined to be used with a converter (for NBFM 70 cm or 2m etc) the IF strip inherently good stopband for rejection adjacent co-channel strong signal, prevents the pesky capture effect obliterating. Being as it's already FM gives you a head start.
With the cheap nasty ceramic filter based IF suffering from this the trick was to insert a mechanical filter so they complement each others deficiency.
@@jagmarc I definitely won’t be using it with a converter! I’ll be using it for what it was designed for.