Early IC and related data.         All photos copyright John Mills, last updated 29 Dec 2009 Data on the following in PDF format is now available. All trademarks, copyrights etc are acknowledged. Data will open in a new browser window.   Information is provided in good faith, but any errors are contained in the original document and are not within my control.   Toko KB4412 & KB4413 Communications IC Toko KV1210 & KV1211 Varicap Diodes   Toko MFL 455 KHz Mechanical SSB Filter PCIM177 / FC177 LCD Frequency Counter Module 1983 Toko KB4423 Noise Blanker IC Data on Impedances and matching tuned circuits (Ambit)   Data on Ferrite Rod design and capacitive antennas (Ambit)