Welcome to Australia's only Vintage Radio and Television discussion forums. You are not logged in. Please log in below, apply for an account or retrieve your password.
Australian Vintage Radio Forums
  Home  ·  About Us  ·  Discussion Forums  ·  Glossary  ·  Outside Links  ·  Policies  ·  Services Directory  ·  Safety Warnings  ·  Tutorials

Vintage Television

Forum home - Go back to Vintage Television

 Television AU
« Back · 1 · Next »
 Return to top of page · Post #: 1 · Written at 11:58:08 PM on 31 January 2018.
Vintage Pete's avatar
 Location: Cromer, NSW
 Member since 1 May 2016
 Member #: 1919
 Postcount: 974

Its a bit of history regarding television in Australia, from B&W to the transition to colour In 1975 and the trial of colour in 1967 by the ABC.
Plus a boy singing with the most unique voice for a boy I have ever heard , interesting walk back in time too.

http://televisionau.com/2014/10/40-years-of-colour-tv.html


 
 Return to top of page · Post #: 2 · Written at 8:09:09 AM on 2 February 2018.
Robbbert's avatar
 Location: Sydney, NSW
 Member since 18 September 2015
 Member #: 1801
 Postcount: 1043

Interesting article.


 
 Return to top of page · Post #: 3 · Written at 4:55:10 PM on 2 February 2018.
Labrat's avatar
 Location: Penrith, NSW
 Member since 7 April 2012
 Member #: 1128
 Postcount: 266

Could the boy be Jamie Redfern who toured the U.S. with Liberace?

Wayne.


 
 Return to top of page · Post #: 4 · Written at 7:34:14 PM on 2 February 2018.
GTC's avatar
 GTC
 Location: Sydney, NSW
 Member since 28 January 2011
 Member #: 823
 Postcount: 5176

Could the boy be Jamie Redfern who toured the U.S. with Liberace?


Yes. The front title says he was aged 9 at the time of that video. Now aged 60.


 
 Return to top of page · Post #: 5 · Written at 1:38:02 AM on 14 February 2018.
NewVista's avatar
 Location: MilwWI, US
 Member since 10 May 2013
 Member #: 1340
 Postcount: 580

"The Government, however, was maintaining its slow and steady approach — with Postmaster-General Alan Hulme insisting that the transition to colour was not going to be a rush job, taking into account the long term investment by government, industry and viewers on new equipment."

Bureaucrat Hulme, what a 'control-freak', funding for new equipment was not a problem, commercial stations were rolling in money.


 
 Return to top of page · Post #: 6 · Written at 1:54:18 AM on 14 February 2018.
GTC's avatar
 GTC
 Location: Sydney, NSW
 Member since 28 January 2011
 Member #: 823
 Postcount: 5176

Back in the day the Postmaster-General role almost attracted clicked heels and stiff salutes. He could even lay down the law to ABC management. How times have changed.


 
 Return to top of page · Post #: 7 · Written at 4:33:57 AM on 14 February 2018.
Brad's avatar
 Administrator
 Location: Greenwich, NSW
 Member since 15 November 2005
 Member #: 1
 Postcount: 5386

He could even lay down the law to ABC management. How times have changed.

These days the ABC is a law unto itself. How we yearn for some leadership on that front. The ABC today is like the former NSW Roads and Traffic Authority was about ten years ago when public servants just took money off government and did as they pleased with it. I was so happy when the state government simply abolished the whole department and started afresh. The workers got carried over to the new department but it was under no uncertain terms that everyone and everything was "under new management".


‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾
A valve a day keeps the transistor away...

 
 Return to top of page · Post #: 8 · Written at 12:44:50 PM on 14 February 2018.
Ian Robertson's Gravatar
 Location: Belrose, NSW
 Member since 31 December 2015
 Member #: 1844
 Postcount: 1269

Yes Brad, precursor to the RTA was the DMR - Department of Main Roads

Also known (for good reason) as the Department of Mates and Relatives.

The ABC is a branch of the Labor Party.


 
 Return to top of page · Post #: 9 · Written at 4:37:36 PM on 14 February 2018.
NewVista's avatar
 Location: MilwWI, US
 Member since 10 May 2013
 Member #: 1340
 Postcount: 580

Fact for Mr Hulme: Sometimes zero spending was required to broadcast colour in the late 1960s: Videotape shows from England sent PAL signal right through transmitter (that's why they call PAL/NTSC/SECAM 'compatible' I guess.) The regulators' response was to mandate muting of colourburst and banning importation of TV receivers from Europe. I'm not against sensible regulation, but that was a bit 'bloody-mind-ed'.


 
 Return to top of page · Post #: 10 · Written at 5:11:12 PM on 14 February 2018.
Ian Robertson's Gravatar
 Location: Belrose, NSW
 Member since 31 December 2015
 Member #: 1844
 Postcount: 1269

Yes, initially the chroma was present but the burst was shaved off by the transmitter / studio's sync generator.

However with a bit of circuitry and a little tweaky-box on the end of a cable you could modify many TVs to lock to the chroma in the picture - this was possible with PAL due to the clever maths involved. Many techs did this. You had a reference oscillator fine tuning knob and a push-button that would toggle the PAL flip-flop to the correct phase. It generally worked quite well, however it did show up group-delay issues with some B&W transmitters.

So the stations started notching out the chroma. Apparently that made life easier for older high-level-modulated transmitters.

Channel 7 in Sydney continued to use their 1960 vintage AWA transmitter for some years after the colour changeover,, modified with some bigger bottles in the modulator. I am told that, to fit in the rack, they had to be mounted sideways and, as a result, performance would deteriorate over about 6 months. In the TV service workshop and in the field, us savvy techs would notice the slowly-softening white to black step on the PM5544 test card of a morning. Then suddenly one morning it would be sharp again - the old transmitter had been treated to a new set of modulator bottles overnight!


 
 Return to top of page · Post #: 11 · Written at 11:52:35 PM on 22 February 2018.
NewVista's avatar
 Location: MilwWI, US
 Member since 10 May 2013
 Member #: 1340
 Postcount: 580

QUOTE: However with a bit of circuitry and a little tweaky-box on the end of a cable you could modify many TVs

I saw one of these rigs in Bris c.1970: with a bit of tweaking by owner, a beautiful picture came in (of a broadcast British comedy.)
How did these work sans burst reference? Was the 4.43mhz subcarrier oscillator essentially freerunning with a trim knob?


 
 Return to top of page · Post #: 12 · Written at 12:16:25 AM on 23 February 2018.
GTC's avatar
 GTC
 Location: Sydney, NSW
 Member since 28 January 2011
 Member #: 823
 Postcount: 5176

I saw one of these rigs in Bris c.1970

O/T: so, New Vista, are you an American who spent time on Oz, or are you an expatriate?


 
 Return to top of page · Post #: 13 · Written at 12:44:16 AM on 23 February 2018.
NewVista's avatar
 Location: MilwWI, US
 Member since 10 May 2013
 Member #: 1340
 Postcount: 580

QUOTE: are you expat?

I'm a Scot from East Vic; that's why I like the term "Scot-Free", like finding free stuff (thrifty)


 
 Return to top of page · Post #: 14 · Written at 9:11:06 AM on 23 February 2018.
Ian Robertson's Gravatar
 Location: Belrose, NSW
 Member since 31 December 2015
 Member #: 1844
 Postcount: 1269

Well it can be shown mathematically (not by me though!) that, with PAL, you can extract the burst reference from the actual colour information by virtue of the fact that the B-Y component is swung through 90 degrees on alternate lines. So the B-Y averages to zero degrees, et voila, there is your reference!

It works, too, I've seen it done!

Re "Scot-Free", we used to have a guy working for us in Melbourne who had a VERY interesting backgound.

He got out of Czechoslovakia just before WW2, went to India.
Married a local girl (who was much taller than he was.and a great cook)
Migrated to Australia in 1958. Drove cabs for a while, had 3 boys (all 6 foot 6 + and all truck drivers.)
Came to work for us in about 1980.

His accent was, let's say, interesting and would often cause a listener to enquire "Where are you from, Les?"

To which his inevitable answer was "I'm a bad Czech!"


 
 Return to top of page · Post #: 15 · Written at 1:13:53 AM on 24 February 2018.
NewVista's avatar
 Location: MilwWI, US
 Member since 10 May 2013
 Member #: 1340
 Postcount: 580

Yes, these TVs receiving PAL transmissions with the burst stripped off really worked. The TVs were late 60s Euro PAL receivers that used the 7MHz channel, so British 8MHz sets wouldn't work. Furthermore, the Euro sets had varactor tuners, so one could find Aussie channels which were different frequency assignments to various European countries' mess of different channel locations & bandwidths.

The show I witnessed popped into colour after a bit of tweaking; it was from ABC station which I know used a microwave STL, so the PAL signal - sans burst - survived an old microwave link and no doubt an old clunker of B&W transmitter (AWA/Marconi?)

As I recall, the proud owner of the TV had to ride the handheld buggery box as the colour dropped out briefly once.


 
« Back · 1 · Next »
 You need to be a member to post comments on this forum.

Sign In

Username:
Password:
 Keep me logged in.
Do not tick box on a computer with public access.