UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - AY-5-1202A clock IC

Nymrod121 · 2nd Feb 2020, 1:46 pm

There was a General Instruments application note that referred to the AY-5-1200 - I recall this having
built the digital frequency meter circuit based upon its stablemate, the AY-5-8100. I used it in conjunction with my homebrew FM-DX tuner (P.W. 'Sandown') and thereafter, the early range of tunerheads/tunersets marketed by Ambit International. Keeping the 'shash' out of the low-level RF stages was almost impossible (even when using the likes of a diecast box, feed-through capacitors for the Futaba 5-LT-03 vacuum fluorescent display driver lines etc.etc.). It was a self-started developmental experience which subsequently prompted William Poel to look at the the likes of the Xylex DTI-100 and upcoming Large-Scale-Integration chips such as rhe MSM5526/5527 from Oki Semiconductor (Ambit catalogues refer).
Guy

2nd Feb 2020, 1:46 pm	#11
Nymrod121 Nonode Join Date: Apr 2012 Location: Worcestershire, UK. Posts: 2,052	Re: AY-5-1202A clock IC There was a General Instruments application note that referred to the AY-5-1200 - I recall this having built the digital frequency meter circuit based upon its stablemate, the AY-5-8100. I used it in conjunction with my homebrew FM-DX tuner (P.W. 'Sandown') and thereafter, the early range of tunerheads/tunersets marketed by Ambit International. Keeping the 'shash' out of the low-level RF stages was almost impossible (even when using the likes of a diecast box, feed-through capacitors for the Futaba 5-LT-03 vacuum fluorescent display driver lines etc.etc.). It was a self-started developmental experience which subsequently prompted William Poel to look at the the likes of the Xylex DTI-100 and upcoming Large-Scale-Integration chips such as rhe MSM5526/5527 from Oki Semiconductor (Ambit catalogues refer). Guy