sinclair phase lock tuner

latala · 23rd July 2006, 08:25 AM

I have a abiding interest in Sincliar products. One of his gadgets was the phase locked tuner I have three units all working ! Does any one have a schematic for this as i would like to see how he has done it
Regards Trev

AndrewT · 23rd July 2006, 08:33 AM

Hi,
that's going back a bit! 1970/71?
I think it preceeded the phase locked loop used for stereo decoding.

This was phase locked reception, alledgedly adopted from "space communications"

latala · 23rd July 2006, 11:10 AM

yes you are dead right ! if only clives products were as good as his claims ?
there are a bno of tuners etc that still use this techneque and I know it still works well
I am as explained a big fan so please anyone !!!

AndrewT · 23rd July 2006, 11:44 AM

Hi,
many FM tuners use a phase locked loop (built into a chip) to decode the stereo information in the demodulated signal.

The Sinclair is different.
It uses a phase locked loop to demodulate the signal.
I cannot recall the method for the decoding but it was one of the common methods at that time, but it was not phase locked.

latala · 23rd July 2006, 06:19 PM

Yes He did an earlier pulse count detector unit ! I also have 1 of those, but does definatlly claim a phase locked demodulator in tha case of the later unit
They were available as part of the project 60 ! and series 2000//3000
regards trev

23rd July 2006, 08:25 AM	#1
latala diyAudio Member Join Date: Feb 2006 Location: staffordshire	sinclair phase lock tuner I have a abiding interest in Sincliar products. One of his gadgets was the phase locked tuner I have three units all working ! Does any one have a schematic for this as i would like to see how he has done it Regards Trev

23rd July 2006, 08:33 AM	#2
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	Hi, that's going back a bit! 1970/71? I think it preceeded the phase locked loop used for stereo decoding. This was phase locked reception, alledgedly adopted from "space communications" __________________ regards Andrew T.

23rd July 2006, 11:44 AM	#4
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	Hi, many FM tuners use a phase locked loop (built into a chip) to decode the stereo information in the demodulated signal. The Sinclair is different. It uses a phase locked loop to demodulate the signal. I cannot recall the method for the decoding but it was one of the common methods at that time, but it was not phase locked. __________________ regards Andrew T.

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23rd July 2006, 11:10 AM	#3
latala diyAudio Member Join Date: Feb 2006 Location: staffordshire	yes you are dead right ! if only clives products were as good as his claims ? there are a bno of tuners etc that still use this techneque and I know it still works well I am as explained a big fan so please anyone !!!

23rd July 2006, 06:19 PM	#5
latala diyAudio Member Join Date: Feb 2006 Location: staffordshire	Yes He did an earlier pulse count detector unit ! I also have 1 of those, but does definatlly claim a phase locked demodulator in tha case of the later unit They were available as part of the project 60 ! and series 2000//3000 regards trev

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