UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - 6-gang FM stereo tuner heads

G0HZU_JMR · 29th Nov 2022, 12:05 am

I just had another look at the Siglent teardown, and I think the first IF filter will be a lot, lot wider than 20MHz. The filter is just a low cost printed interdigital filter. The finger spacing is quite close so this filter could be several hundred MHz wide.

29th Nov 2022, 12:05 am	#306
G0HZU_JMR Dekatron Join Date: Sep 2010 Location: Cheltenham, Gloucestershire, UK. Posts: 3,077	Re: 6-gang FM stereo tuner heads I just had another look at the Siglent teardown, and I think the first IF filter will be a lot, lot wider than 20MHz. The filter is just a low cost printed interdigital filter. The finger spacing is quite close so this filter could be several hundred MHz wide. __________________ Regards, Jeremy G0HZU