[Main 95 Bulletin Board | BBFAQ | Prev by Date | Next by Date | Post Followup ] Member Login / Signup - Members see fewer ads. - Latest Member Gallery Photos Re: And a means to re-use undivorced radios too? Like This Post: - Subscribe to Daily Digest for this Bulletin Board Posted by Gene N [Email] (#1094) [Profile/Gallery] (more from Gene N) on Wed, 27 Feb 2019 19:09:30 In Reply to: And a means to re-use undivorced radios too?, MI-Roger [Profile/Gallery] , Wed, 27 Feb 2019 16:53:01 Alert me when someone posts in this thread: Members do not see ads below this line. - Help Keep This Site Online - Signup

That is correct. The new EEPROM chips are blank, which apparently is the state of a divorced radio. Kind of makes sense from a production standpoint. Erasing the EEPROM divorces the radio. When the radio is married the VIN number is stored in the EEPROM. I am also sure that the station settings and other radio programing reside there.

As to the other question, I had to look it up. An EEPROM is similar to Flash memory and uses floating gate MOSFET (metal-oxide-semiconductor field-effect transistor) which serves as an addressable capacitor that stores electrons for ones and zeros (the floating part of the name is the capacitor). Over time and use the capacitors accumulate excess electrons in such a way that the charge is no longer a well defined one or zero and becomes unreliable. My guess is the purity of the materials and the construction geometry affect the life. Temperature range comes into it I'm sure.

->Posting last edited on Thu, 28 Feb 2019 09:31:54.

• Radio Code fix., Gene N , Tue, 26 Feb 2019 20:29:397
  • Re: Radio Code fix., Rodewaryer , Mon, 13 Jul 2020 18:38:59
  • I have put a ad in the Classifieds for the Radio Code repair., Gene N , Fri, 8 Mar 2019 15:48:15
  • You beat me too it., dmz789qqq, Sun, 3 Mar 2019 07:39:49
  • And a means to re-use undivorced radios too?, MI-Roger , Wed, 27 Feb 2019 16:53:01
    • Re: And a means to re-use undivorced radios too?, Gene N , Wed, 27 Feb 2019 19:09:30 <-- Viewing This Message
      • I passed this by my 'electronics wizard' friend . . ., Mark in Marine , Wed, 27 Feb 2019 20:47:53
  • Outstanding research and write up, SWEDECAR , Wed, 27 Feb 2019 09:38:06
    • Longer life chip., Gene N , Wed, 27 Feb 2019 10:21:14
  • Replacement advice?, Paul from Palmyra, PA, Wed, 27 Feb 2019 06:33:41
    • Re: Replacement advice?, Gene N , Wed, 27 Feb 2019 07:41:01
  • Re: Radio Code fix., CraigU, Wed, 27 Feb 2019 05:18:56
  • Any interest of this repair as a service?, Gene N , Tue, 26 Feb 2019 20:45:521
    • Re: Any interest of this repair as a service?, Jeff Svare, Fri, 18 Jun 2021 08:39:06
    • Re: Any interest of this repair as a service?, Bernie , Sat, 2 Mar 2019 16:53:26
    • Re: Any interest of this repair as a service?, Jeff, Fri, 1 Mar 2019 07:39:18
    • Gene-ious!!, K. Daehnke, Thu, 28 Feb 2019 18:40:20
    • yes!, bobc , Thu, 28 Feb 2019 06:42:02

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