In which Decca TV were SAW filters first used? - UK Vintage Radio Repair and Restoration Discussion Forum

jjl · 27th Jan 2008, 10:44 am

A colleague of mine was employed as a design engineer at Decca in the '70s. While there, one of his responsibilities was to design a TV IF strip using SAW devices. Apparently this was the first use of SAW devices in a UK designed TV.
Unfortunately, my colleague can not remember the model of TV in which this design first went into production.
I wondered whether any forum member knows the type of TV in question or even has an example of this set.

John

Heatercathodeshort · 27th Jan 2008, 11:24 am

Hello John,
I believe the series that you refer to is the DECCA '70' series. It was quite a rare set in the UK but reliable. Model numbers are CN701 and CP897. Hope this info may help. Regards, John.

llama · 27th Jan 2008, 7:55 pm

My 70 series manual is dated March 1979 if that help pin it down. The IF amp IC SL1430 [quote] has a differential output suitable for driving the surface acoustic wave filter 1SW1 [unquote].
We had one of these nice sets as a monitor where I worked. I think it was Decca's first UK mainstream (ie not monitor) TV with chassis isolated from the mains, but I don't think any sets took advantage of this with eg an AV input.
The only time I've seen them "out and about" was on holiday at Watermouth Castle - every chalet had one. That would have been 1988.
Regards
Graham

27th Jan 2008, 10:44 am	#1
jjl Octode Join Date: Jan 2003 Location: Ware, Herts. UK. Posts: 1,082	In which Decca TV were SAW filters first used? A colleague of mine was employed as a design engineer at Decca in the '70s. While there, one of his responsibilities was to design a TV IF strip using SAW devices. Apparently this was the first use of SAW devices in a UK designed TV. Unfortunately, my colleague can not remember the model of TV in which this design first went into production. I wondered whether any forum member knows the type of TV in question or even has an example of this set. John

27th Jan 2008, 11:24 am	#2
Heatercathodeshort Dekatron Join Date: Jun 2005 Location: Warnham, West Sussex. 10 miles south of DORKING. Posts: 9,147	Re: In Which Decca TV were SAW Filters First Used? Hello John, I believe the series that you refer to is the DECCA '70' series. It was quite a rare set in the UK but reliable. Model numbers are CN701 and CP897. Hope this info may help. Regards, John.

27th Jan 2008, 7:55 pm	#3
llama Octode Join Date: Jun 2006 Location: St Osyth, Nr Clacton, Essex, UK. Posts: 1,482	Re: In Which Decca TV were SAW Filters First Used? My 70 series manual is dated March 1979 if that help pin it down. The IF amp IC SL1430 [quote] has a differential output suitable for driving the surface acoustic wave filter 1SW1 [unquote]. We had one of these nice sets as a monitor where I worked. I think it was Decca's first UK mainstream (ie not monitor) TV with chassis isolated from the mains, but I don't think any sets took advantage of this with eg an AV input. The only time I've seen them "out and about" was on holiday at Watermouth Castle - every chalet had one. That would have been 1988. Regards Graham