Aurora Picture/Sound Carrier Ratio - UK Vintage Radio Repair and Restoration Discussion Forum

wattlessdropper · 25th Aug 2015, 9:04 am

HI

Can anyone confirm; Does the Aurora produce the correct 405 line vision to sound carrier ratio? A high sound carrier could lead to picture/sound crosstalk?
From memory I think the 625 line ratio used to be around 7dB and then later reduced to 11dB as set design improved, what is it at 405 lines?

Regards

Wattlessdropper

kan_turk · 25th Aug 2015, 8:04 pm

Hi
Aurora SCRF405A default vision/sound carrier ratio is 6dB but is adjustable if necessary. I have never, however, needed to change from default - perhaps the problem is with set IF alignment - is issue evident with more than one set?
Hope this helps
Regards
John

25th Aug 2015, 9:04 am	#1
wattlessdropper Triode Join Date: Sep 2014 Location: Bristol, UK. Posts: 25	Aurora Picture/Sound Carrier Ratio HI Can anyone confirm; Does the Aurora produce the correct 405 line vision to sound carrier ratio? A high sound carrier could lead to picture/sound crosstalk? From memory I think the 625 line ratio used to be around 7dB and then later reduced to 11dB as set design improved, what is it at 405 lines? Regards Wattlessdropper

25th Aug 2015, 8:04 pm	#2
kan_turk Hexode Join Date: Mar 2014 Location: Dublin, Ireland Posts: 398	Re: Aurora Picture/Sound Carrier Ratio Hi Aurora SCRF405A default vision/sound carrier ratio is 6dB but is adjustable if necessary. I have never, however, needed to change from default - perhaps the problem is with set IF alignment - is issue evident with more than one set? Hope this helps Regards John