Found on eBay:

Forum for discussion of narrow-bandwidth mechanical television

Moderators: Steve Anderson, Dave Moll, Andrew Davie

Found on eBay:

Postby DrZarkov » Mon Jun 04, 2007 7:17 am

After all that bad luck with my video-driver I've got this here on eBay:
[url]http://cgi.ebay.de/ws/eBayISAPI.dll?ViewItem&ih=020&sspagename=STRK%3AMEWN%3AIT&viewitem=&item=300114638700&rd=1&rd=1
[/url]

Practical Television from March 1935 :D Not really cheap, but here in Germany impossible to get. I can't wait to get it. :lol:
User avatar
DrZarkov
I think I've had a cranial implosion.
 
Posts: 1037
Joined: Mon Feb 19, 2007 11:28 pm
Location: Kamp-Lintfort, Germany

Re: Found on eBay:

Postby Viewmaster » Mon Jun 04, 2007 6:23 pm

DrZarkov wrote:Practical Television from March 1935 :D Not really cheap, but here in Germany impossible to get. I can't wait to get it. :lol:


And I can't wait to hear what all the articles in it are about...and maybe see some piccys too.
Albert.
User avatar
Viewmaster
Frankenstein was my uncle.
 
Posts: 1289
Joined: Fri Apr 06, 2007 4:50 am
Location: UK Midlands

Postby DrZarkov » Tue Jun 12, 2007 7:30 am

It arrived today! From the content:
- Visors designed and made by readers
- High-Definition with a disc-receiver
- Obtaining brilliant pictures
- Simple television receiver suggestions
- Daylight TV
- Television committee's report
- Building a portable Television Receiver

and more.

I came home very late today, and I have to go up at 5.45 am, so no time for scanning in anything by now. But I will do it as soon as possible.
User avatar
DrZarkov
I think I've had a cranial implosion.
 
Posts: 1037
Joined: Mon Feb 19, 2007 11:28 pm
Location: Kamp-Lintfort, Germany

Postby Viewmaster » Tue Jun 12, 2007 6:27 pm

DrZarkov wrote:It arrived today! From the content:
- Visors designed and made by readers
- High-Definition with a disc-receiver
- Obtaining brilliant pictures
- Simple television receiver suggestions
- Daylight TV
- Television committee's report
- Building a portable Television Receiver

and more.

I came home very late today, and I have to go up at 5.45 am, so no time for scanning in anything by now. But I will do it as soon as possible.


"Obtaining brilliant pictures" looks interesting pre LED. :)
And a 'portable' TV in 1935 boogles my mind somewhat!
Albert.
User avatar
Viewmaster
Frankenstein was my uncle.
 
Posts: 1289
Joined: Fri Apr 06, 2007 4:50 am
Location: UK Midlands

Postby DrZarkov » Wed Jun 13, 2007 5:43 am

The first pictures: I scaled them down to put them here, I will store the entire magazine on my homepage later.
Attachments
pt1.jpg
(269.64 KiB) Downloaded 1611 times
pt2.jpg
(271 KiB) Downloaded 1609 times
pt3.jpg
(279.84 KiB) Downloaded 1610 times
pt4.jpg
(305.72 KiB) Downloaded 1587 times
pt5.jpg
(323.7 KiB) Downloaded 1604 times
User avatar
DrZarkov
I think I've had a cranial implosion.
 
Posts: 1037
Joined: Mon Feb 19, 2007 11:28 pm
Location: Kamp-Lintfort, Germany

Postby Viewmaster » Wed Jun 13, 2007 6:22 pm

Thanks for all those very detailed pictures. But the prices!
In 1935 it would have taken a whole weeks wages for a working man just to buy the sync gear for the Nipokow disc!
A 16" disc for 7/6, the whole kit 84/- That's about 7 times a weekly wage.

The new mercury neon lamp was not suitable for 60 lines I see. Driven by a PX25 old bulbous valve. A far better sight than a few LEDs though!

"British Television Supplies"...these firms soon get on any new band wagon, choosing a suitable modern name......just as they do now!
Albert.
User avatar
Viewmaster
Frankenstein was my uncle.
 
Posts: 1289
Joined: Fri Apr 06, 2007 4:50 am
Location: UK Midlands

Postby DrZarkov » Wed Jun 13, 2007 7:10 pm

My impression of this magazin is that it looks like a computer magazin of the eighties. The same kind of people buying it. :) About the currency I have to ask as a non english: 84/0 means 84 Shilling or Pound? Even Shilling is incredible expensive, given that 84 Shilling were 7 pounds or 84 Reichsmark which is now about 420,00 EUR in value of money.
User avatar
DrZarkov
I think I've had a cranial implosion.
 
Posts: 1037
Joined: Mon Feb 19, 2007 11:28 pm
Location: Kamp-Lintfort, Germany

Good old English currency.

Postby Steve Anderson » Wed Jun 13, 2007 7:24 pm

84/- = eighty four shillings. At 20 shillings to the (old) pound = four pounds and four shillings. Or 4.20 in todays currency, say about 6.30 Euros, or around US$8.00.

In 1935 that would have been far more than the average weekly wage. In 1956 my father was making about six pounds a week as a trainee projectionist at the Hammersmith Odeon, then he had to pay tax out of that!

Steve A.

Attached is a datasheet for a PX25, looks far more interesting than any MOSFET!
Attachments
px25.pdf
(107.75 KiB) Downloaded 691 times
User avatar
Steve Anderson
"Fester! Don't do that to 'Thing'"
 
Posts: 4148
Joined: Fri Mar 30, 2007 10:54 pm
Location: Bangkok, Thailand

Postby DrZarkov » Wed Jun 13, 2007 8:04 pm

20 Shilling were 1 Pound? Who invented that??? O.k., 4 Pound 4 Shilling were in that days 50 Reichsmark, which has now a value of about 250,00 EUR after statistics what you've got for that money and what you will have to pay now for getting the same. Still expensive for a TV kit...
User avatar
DrZarkov
I think I've had a cranial implosion.
 
Posts: 1037
Joined: Mon Feb 19, 2007 11:28 pm
Location: Kamp-Lintfort, Germany

Postby Steve Anderson » Wed Jun 13, 2007 8:22 pm

DrZarkov wrote:20 Shilling were 1 Pound? Who invented that?


The whole Imperial system of measurements and currency defies belief. Thankfully there are few remnants left of it, except in the US who for reasons I don't understand won't let go of it.

The exception in the UK is road distances which are still in miles, and speeds in MPH (miles per hour). Though there are moves afoot to change that. One Imperial mile = 1.6km (approx.) If you drive in the UK you'll notice on the motorways that exits are notified increasingly now at 2/3 of a mile and 1/3 of a mile. Near enough for an overnight change to 1km and 500m.

I have a 12" steel ruler (I should say 305mm), on the reverse it has conversions from Imperial to Metric, e.g. 49/64" = 19.446875mm...talk about awkward! You want to multiply 49/64" by seven in your head?

Going back to currency, there was also the Guinea = 21/-, more expensive items like furniture were often quoted in Guineas to reduce the apparent 'number'.

If you want a lesson in the impossible, here's a link...

http://web.staffs.ac.uk/schools/humanit ... dmoney.htm

I attach a jpg of a 1961 Brimar valve/tube page manual, it shows the prices on this particular page. It shows a 6BK4 as 60/-, i.e three pounds...confusing or what?

Steve A.
Attachments
Brimar 1.jpg
Brimar 1.jpg (196.17 KiB) Viewed 8063 times
User avatar
Steve Anderson
"Fester! Don't do that to 'Thing'"
 
Posts: 4148
Joined: Fri Mar 30, 2007 10:54 pm
Location: Bangkok, Thailand

Postby AncientBrit » Wed Jun 13, 2007 10:30 pm

(And Purchase Tax was a form of VAT)
AncientBrit
Green padded cells are quite homely.
 
Posts: 858
Joined: Mon Mar 26, 2007 10:15 pm
Location: Billericay, UK

Re: Good old English currency.

Postby Viewmaster » Thu Jun 14, 2007 6:31 pm

Steve Anderson wrote:84/- = eighty four shillings. At 20 shillings to the (old) pound = four pounds and four shillings. Or 4.20 in todays currency, say about 6.30 Euros, or around US$8.00.

In 1935 that would have been far more than the average weekly wage. In 1956 my father was making about six pounds a week as a trainee projectionist at the Hammersmith Odeon, then he had to pay tax out of that!


I miss the old slang terms for our money... £1 was a quid. 1/- was a bob.
A tenner was £10 and a pony was £25. Monkey came in at £500.
Ah, thems were the days.
Albert.
User avatar
Viewmaster
Frankenstein was my uncle.
 
Posts: 1289
Joined: Fri Apr 06, 2007 4:50 am
Location: UK Midlands

Re: Good old English currency.

Postby Steve Anderson » Thu Jun 14, 2007 7:26 pm

Viewmaster wrote:Ah, thems were the days. Albert.


Perhaps we should make this an exclusively non-solid-state board, no Silicon or Germanium. OK, you can get away with Selenium or metal-oxide rectifiers, but that's it!

I'm only joking, but those that have dabbled in vacuum-based technology will understand what I am suggesting. It's nuts and bolts, no PCBs along with the occasional 'belt' from the supplies.

While you wait for the valves/tubes to warm up you go and put the kettle on. The innocence of the era....here's a typical advertisment from that period...should raise a few giggles...

Steve A.
Attachments
Muffins.jpg
Muffins.jpg (75.03 KiB) Viewed 8039 times
User avatar
Steve Anderson
"Fester! Don't do that to 'Thing'"
 
Posts: 4148
Joined: Fri Mar 30, 2007 10:54 pm
Location: Bangkok, Thailand

Postby Viewmaster » Thu Jun 14, 2007 8:02 pm

Somewhere among the NBTVA photos on site is a photo of a valved NBTV.
So much better than bland uninteresting looking transistors. Valves are easily obtainable and HT/LT transformers too, so I wonder why we don't all get stuck in and go valvey? I have some 2v and 6.3 volt valves....also some for AC/DC sets.....a NBTV with a line cord! :shock:
Albert.
User avatar
Viewmaster
Frankenstein was my uncle.
 
Posts: 1289
Joined: Fri Apr 06, 2007 4:50 am
Location: UK Midlands

Postby Steve Anderson » Thu Jun 14, 2007 8:24 pm

Viewmaster wrote:So much better than bland uninteresting looking transistors. Valves are easily obtainable and HT/LT transformers too, so I wonder why we don't all get stuck in and go valvey?
Albert.


Albert, I cannot agree with you more. But there are those that are too scared with voltages of above 50V or so. I'm working on an SSTV monitor at the moment that uses 3KV and a 5ADP7 tube, with all the exposed connections, the crackling in the air, and the smell of Ozone it's wonderful!

You wanna see electrons in action...get yourself a few KV!

Also, remember those 90V and 120V batteries you could get for 'portable' radios, I've seen somewhere that they are still available, but at cost!

Steve A.
Attachments
5ADP7.jpg
5ADP7.jpg (114.84 KiB) Viewed 8028 times
User avatar
Steve Anderson
"Fester! Don't do that to 'Thing'"
 
Posts: 4148
Joined: Fri Mar 30, 2007 10:54 pm
Location: Bangkok, Thailand

Next

Return to Mechanical NBTV

Who is online

Users browsing this forum: No registered users and 9 guests

cron