Thanks Michael blast from past. Thank you sir

@michaeldranfield7140

8 ай бұрын

Glad you liked it, got more to show in the future!

Nice and simpel generator. Enough to do the nessecary alignments. Like it.

@michaeldranfield7140

8 ай бұрын

as you say , very little alignment so should work first time .

I’m so glad you don’t throw anything away, love watching these!

@michaeldranfield7140

8 ай бұрын

I just wish I had kept more stuff, still got lots of stuff packed away that I must un box some day !

Great stuff and I bought the 30x30 RTVC amplifier on the page shown and is still in use today. These kits were great to learn about electronics. Another Gem !

@michaeldranfield7140

8 ай бұрын

the RTVC kit I bought was the mullard 10+10 , a bit disappointing though as all the mullard modules were ready made so the kit only involved wiring up the modules , I do have a RTVC in a back room but its not the 30 one like you have .

@pauldavies6037

8 ай бұрын

@@michaeldranfield7140 Mullard modules were used in Roberts radios

Thank you for sharing this interesting and educational video with us. It brings back memories especially of the brown coax lead that was used all those years ago!

@michaeldranfield7140

8 ай бұрын

Yes , the old brown coax , I use to make desoldering braid with it , stretch out the screen flattish and dip it in Fluxlite .

@pauldavies6037

8 ай бұрын

@@michaeldranfield7140 me to for free

This reminds me of a kit I had when at school in 1963. It was a HAC, Hear All Continents, short wave radio, whole thing was a bit primitive like your Doram. Absolutely brilliant reception. I bought a small battery operated signal generator to tune it, happy days. Does anyone remember ribbon solder. You wrapped it round the two wires you wanted to join and put a lighted match underneath. It worked brilliantly for those of use who could not afford a soldering iron.

@michaeldranfield7140

8 ай бұрын

I bet if I looked hard enough I could find some of the solder you melted with a match !Yes I do remember the HAC kits in practical wireless.

wow, you have kept everything you have done for all of your life

@michaeldranfield7140

8 ай бұрын

Lets put it this way, now I'm getting older I wish I had kept more than I have , but yes I have lots more to show in the future.

@leetucker9938

8 ай бұрын

@michaeldranfield7140 I wish I kept my Murphy valve radio . It was humming and I thought the valves had wore out . Many years later I learn about capacitors etc from youtube educational videos like yours and I know more now

@twotone3070

6 ай бұрын

@@michaeldranfield7140 Funny that. As I get older I wish I'd kept less, now I have to make decisions about throwing things out. Also I know everything is going to end up in a skip after I've gone.

Crumbs! Brought back some memories. I waited until 1983 before building my own which included a Mullard-Signetics sync generator. Can't remember why I built instead of buying (probably thought I could do it cheaper, big mistake!). Still works.

@michaeldranfield7140

8 ай бұрын

Nothing better than making something yourself .

Thanks for your time to make videos, the old stuff and history are interesting stuff, i am from early -77 and always been intersted in electronics and collecting and even use everything vintage, love those old reliable things :=) Greetings from western Finland.

@michaeldranfield7140

8 ай бұрын

Glad you liked it , more to come soon , got another old TV set to do hopefully before christamas.

I was 22 in 1977 and can well remember the various kits and projects in magazines for building your own pattern generator. I had the luxury of a Labgear one at work, but made my own from a design in Practical Electronics for home use. This one is certainly well made with high quality parts, which is reflected in the price. Happy days when most colour sets were rented, and the stock faults were well known. Now we throw away a lot of TV's rather than repair them, who want's the hassle of changing backlights on todays massive screens?

@michaeldranfield7140

8 ай бұрын

Think I remember the PE pattern gen, was it about 1977,had a blue front cover and was built in a slim vero box??

@Barbarapape

8 ай бұрын

That was probably the one, i used as many salvaged parts as possible and a metal case. It served me well for many years until the shop closed then i aquired the Labgear one that also had colour bars. Today it is not worth the hassle making your own testgear.@@michaeldranfield7140

I was 10 in 1977 but in 1983 i got my zx spectrum my dad thought it was useless until i wrote a program to output verius test cards to align the crt guns. My dad instantly approved of my computer.

@michaeldranfield7140

8 ай бұрын

Someone lent my a sinclair computer in 1983/1984 but I didn't do anything with it apart from a 3 line program that scrolled a word down the screen so I never had any interest in computers at all.

I remember Doram well. VAT was 8% standard rate and 25% (later 12.5%) on luxury goods, hence the "+ S" against the prices.

@michaeldranfield7140

8 ай бұрын

I have a recollection of the VAT been 25 percent on luxury goods when I worked in an electrical shop in the 70 s but didn't realise that's what the +s stood for .

Postal order counterfoils , I've just fallen through a time warp and probably totally unknown to youngsters now . We had a posh Labgear pattern generator but it had the same monochrome video output. There appeared to be a kit to make anything back then and British firms supplied most of the parts , I made a Sparkrite electronic ignition from a kit for a third off the price of the assembled unit. Thanks for uploading.

@michaeldranfield7140

8 ай бұрын

back then kits were very popular as ready made electronics were very expensive and kits made these things much more affordable for everyone , these days though with everything been made in china for peanuts any sort of kit would be much more expensive and I thinks that's why kits disappeared into history .

Great history and knowledge and I have to say, you have a superb memory!

@michaeldranfield7140

8 ай бұрын

The funny thing is if you asked me a question about something I did 40 years ago I could tell you, if you asked me what I had for tea yesterday I would have to stop and think about it, I had this same conversation with a friend a while a ago and he said its all to do with when you were most happy in life.

The workshop reminds of the day ha.

@michaeldranfield7140

8 ай бұрын

I need to tidy up a bit !

Thanks for sharing this video Michael. Looking forward to more videos. Keep up the good work.

@michaeldranfield7140

8 ай бұрын

No problem, hoping to have a vintage TV video before Christmas.

That brought back some memories. Many thanks for sharing your experience!

@michaeldranfield7140

8 ай бұрын

no problem , I must look through some more boxes and see what else I have kept all these years !

I bought and built the kit version of this pattern generator, way back when, just to save a few quid. I can tell you now, the interconnecting leads are nowhere near as tidy as the ones in your example - they were nowhere near long enough to come anywhere near the routing you have in yours! In mine, there was an annoying "hooking" effect just below every horizontal line, however, it didn't detract from its usefulness, nor from the accuracy of convergence, when converging a colour set. One interesting thing though, on mine, the legends on the front panel were supplied in a "Letraset" transfer kind of fashion. The problem with that was that they soon began to rub off, and over the years I kept touching them up with black permanent marker. Unfortunately, mine decided to give up the ghost in storage and I didn't really have knowhow to track down the problem. All I know is, the power supply and RF modulator were working, which pointed to a fault on the TTL board. I guess I need to sketch out the point to point wiring, lift out the logic board and give it a good look over. I'm not 100% sure but I seem to recall that the board has double sided print. Anyway, and moving on...... Speaking of RT-VC (Radio & TeleVision Components as it was known). I also bought a kit from them, and it would just happen to be that MW/LW car radio. I should still have that somewhere too! I had that radio in my first vehicle, and ended up moving it from car to car to van to car and so on, I til I eventually bought a car with a radio already installed, so the radio was stored away for a rainy day. It was comprised of a Mullard IF unit, fed from a permeability tuner, and the AF output was by way of a Philips AF amp IC and a handful of discreet components - All very minimal construction and easily built in a single night. Everything was prealigned so that once built, the only testing and setting up to do was turn on, tune in, and tweak the aerial trimmer! It was a good reliable radio, and difficult to criticise in its day.

@michaeldranfield7140

8 ай бұрын

I thought you might find this video interesting as I remember you mentioning the Doram pattern gen , I think this kit ran for quite a while and that could be why yours had letra set rather than a paper overlay on the live chat with John Joe , Although the pcb is double sided I suspect this is pre through board copper track and I would bet any through board links need to be made with some copper wire. I remember in the early 80s a car radio design appearing on the front of Practical electronics , think it had a red front cover and that was based on a permeability tuner so it could well very similar to the kit you built .

Us apprentices weren't allowed to touch the pattern generators, unless we were under supervision.

@michaeldranfield7140

8 ай бұрын

Still have the first patten gen I made, it was about 1981 and came from manor supplies as a kit from Television magazine

@user-rp4cw9jn3k

8 ай бұрын

@@michaeldranfield7140Marvellous Michael, If often thought watching your channel the wonderful history and your the custodian of it , the Council should set you up with a Museum of Radio & TV Technology., as long as you don't become a diva.

I remember having a Doram components catalogue!!

@michaeldranfield7140

8 ай бұрын

I may still have a catalogue if I look hard enough !

I surprised to see brown blue mains cable in such an old device

@rossthompson1635

8 ай бұрын

Flexible cables changed to blue/brown in the early 70s. House wiring stayed with black/red until 2006. I suppose it was more important for appliance flex colours to be harmonised with other 220/240V countries for ease of import/export - but then with more labour mobility, standardising fixed wiring colours made sense too.

@michaeldranfield7140

8 ай бұрын

Yes it is surprising but someone else commented we changed from red/black to brown/blue in the 70 s

I dont remember Doram but I do remember the Samos cases, I made a NiCd charger in one and still have it somewhere. BTW..those counterfoils, you need to start throwing some stuff away!

@michaeldranfield7140

8 ай бұрын

yes , the Samos cases came in a number of different sizes, Throw things away , Nooooo, wish I had kept more !

Wow, I thought I had archives, but although I used to buy lots of stuff by mail order as a youngster in the 70's, from the delights of electronics mags adverts, I didn't retain the PO counterfoils, or in fact the invoices that came with the goods. I wish I had now! I just looked up postal orders and they are still available, very expensive to use though, upto £99.99, the fee is 12.5% of face value!!! Does anyone remember Josty kits?

@michaeldranfield7140

8 ай бұрын

I remember the Josty kits, they did a lot of RF stuff allthough I never bought anything from them, when I look back now I wish I had kept a lot more stuff than I did and took a lot more photographs than I did also.

@mistermikeanson

8 ай бұрын

I remember Josty - could never afford any of them!!

@turboslag

8 ай бұрын

@@michaeldranfield7140 Yes, I still have a very small, for the time, FM transmitter, and it still works, or it did the last time I tried! Must find it and try it again. Also wish I'd kept alot of stuff that I let go, and recorded a lot more for posterity by photographing. One thing in particular I wish I had recorded with photos was the first place I worked, CES in Newcastle on Tyne. For a big company it was quite a rickety old building on 4 floors with only one goods lift. The service bench area was really quite crude, just knocked up from timber with a strange lino on top! I loved the stores, an Aladdin's cave of component delight! The Leeds branch was much better, we moved to the area and I got a transfer. It was in a very large, modern building and was a main centre for catalogue return repairs. Pallet loads of radios, cassette recorders, portable TV's, music centres, clock radios, virtually the whole Philips, Pye and group products used to arrive almost daily. There were about 20 service engineers and we were kept very busy! And that was on top of local trade and customer counter repairs, and the field service engineers. Yes, really wish I'd taken photos of all that. CES has disappeared without trace, there is virtually nothing online. I did still have one of my old CES white service coats with a badge on the front pocket, but it's disappeared somewhere in various moves over the years.

@whitesapphire5865

8 ай бұрын

Yep, I bought and built one of their "wideband" RF amplifiers - ran all of its working life on a single PP9 battery. I used to turn it off at night, but since the battery just kept on going, I eventually left the amp permanently switched on! I used that amp for long distance TV on VHF. It was ludicrously good at bringing in signals from all over the north of England and the midlands. Those were the golden days of British television for me.

Doram kits forgotten all about those never bought one yes expensive

@michaeldranfield7140

8 ай бұрын

Even RS seem to have forgotten about Doram , I was talking to a customer 6 months or so ago who visited the RS trade counter in Stockport and he mentioned to them about Doram and they had no idea what he was talking about !

@pauldavies6037

8 ай бұрын

@@michaeldranfield7140 Yes it was a long time ago Mike

the other thing i remember from dorum is the pink panther theme - dorum......dorum.......dorum dorum dorum..... dorum doruuuuuuuuummm (go on tell me you didnt just sing this to yourself)🤪

@michaeldranfield7140

8 ай бұрын

Dont remember that .

sempre molto preciso sulla descrizione aiutami ho bisogno del software per un telefunken expt395s27yxh main 17mb140 ves395undc il pannello il programma per scaricare il firmware su chiavetta usb dove lo trovo grazie

That was a week's wages.

Look carefully and some of the chips are RS branded. It didn’t last too long as they were known in the trade as Rubbish Semiconductors !

@michaeldranfield7140

8 ай бұрын

Yes , I have heard other people say this in the past, although personally I have never had any problems with RS branded devices .

@doublehaven

8 ай бұрын

@@michaeldranfield7140 If you are ever down Corby way let me know. We can show you RS today. 😀

I suppose if you needed a pattern gen, it would pay for itself in a couple of jobs. Not the thing a hobbyist would shell out for.

@michaeldranfield7140

8 ай бұрын

With the advent of colour TV a crosshatch was a must and back then ready made stuff would have been quite expensive , kits brought these things to hobbyists at an affordable cost .