Can someone please tell me the voltage and values of C-91, C-176 and C-173 in the R-4 (not A) receiver? Thank you, Rich
--- On Fri, 3/1/13, [email protected] <[email protected]> wrote: From: [email protected] <[email protected]> Subject: Drakelist Digest, Vol 57, Issue 1 To: [email protected] Date: Friday, March 1, 2013, 12:00 PM Send Drakelist mailing list submissions to [email protected] To subscribe or subscribe via the World Wide Web, visit http://mailman.zerobeat.net/mailman/listinfo/drakelist or, via email, send a message with subject or body 'help' to [email protected] You can reach the person managing the list at [email protected] When replying, please edit your Subject line so it is more specific than "Re: Contents of Drakelist digest..." Today's Topics: 1. R4B xtal calibrator ic.... (Fred or Ski) 2. Re: R4B xtal calibrator ic.... (MICHAEL TALLENT) ---------------------------------------------------------------------- Message: 1 Date: Thu, 28 Feb 2013 18:28:46 -0800 (PST) From: Fred or Ski <[email protected]> To: drakelist <[email protected]> Subject: [Drakelist] R4B xtal calibrator ic.... Message-ID: <[email protected]> Content-Type: text/plain; charset="iso-8859-1" I am working on my R4B crystal calibrator and the schematic doesn't show the two ICs very well, used for counting down the 100 kc crystal frequency.? They are listed as a 923 J-K Flip-flop which are both no longer available.? I think NTE had them as a 9923.? Does anyone have the 923 in a better more defined?description? In the manual, the diagram for the calibrator doesn't show components either, so the foil side of the board doesn't make it very?easy to trace out the circuit. ? Garey, does your CD have it shown in a better more defined display someplace? ? Thanks guys, ? Ski-WB8YXI -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://mailman.zerobeat.net/pipermail/drakelist/attachments/20130228/e11242dc/attachment-0001.html> ------------------------------ Message: 2 Date: Thu, 28 Feb 2013 22:09:19 -0500 From: "MICHAEL TALLENT" <[email protected]> To: "drakelist" <[email protected]> Subject: Re: [Drakelist] R4B xtal calibrator ic.... Message-ID: <9311E7DC50C54217BE6AE3B6D72E2C73@Email> Content-Type: text/plain; charset="iso-8859-1" I have the Fairchild data sheets and some of the 923 RTL J-K flip-flops, probably about the same date code as was used in the Drake receivers, I throw nothing away. Mike W6MXV From: Fred or Ski Sent: Thursday, February 28, 2013 9:28 PM To: drakelist Subject: [Drakelist] R4B xtal calibrator ic.... I am working on my R4B crystal calibrator and the schematic doesn't show the two ICs very well, used for counting down the 100 kc crystal frequency. They are listed as a 923 J-K Flip-flop which are both no longer available. I think NTE had them as a 9923. Does anyone have the 923 in a better more defined description? In the manual, the diagram for the calibrator doesn't show components either, so the foil side of the board doesn't make it very easy to trace out the circuit. Garey, does your CD have it shown in a better more defined display someplace? Thanks guys, Ski-WB8YXI -------------------------------------------------------------------------------- _______________________________________________ Drakelist mailing list [email protected] http://mailman.zerobeat.net/mailman/listinfo/drakelist -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://mailman.zerobeat.net/pipermail/drakelist/attachments/20130228/3127b718/attachment-0001.html> ------------------------------ _______________________________________________ Drakelist mailing list [email protected] http://mailman.zerobeat.net/mailman/listinfo/drakelist End of Drakelist Digest, Vol 57, Issue 1 ****************************************
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