Garey - thanks for the great info!! Now to find a bargain at Dayton. 73 de Ian N8IK
-----Original Message----- From: Garey Barrell [mailto:[EMAIL PROTECTED] Sent: Sunday, April 04, 2004 11:55 PM To: Ian Cc: 'Tim Kass'; [EMAIL PROTECTED] Subject: Re: [drakelist] R-4B question Ian - ALMOST all 4 Series schematics have serial number ranges on them. It consists of the date and first serial number affected in the form MmDdYYXXXXXX. As in 115688000 for 01/15/68 s/n 8000. You may ask how we know it's 01/15/68 and not 11/05/68..? Educated guess since the "early" R-4B was 926677000 for 09/26/67 s/n 8000 and the next one was 05076910501 for 05/07/69 s/n 10501. 73, Garey - K4OAH Atlanta Ian wrote: > Interesting. I've seen 2 different schematics for an R-4B, one with V11 and > one without V11 (OB2). Neither indicate serial number ranges. > > Ian N8IK > > > -----Original Message----- > From: Tim Kass [mailto:[EMAIL PROTECTED] > Sent: Sunday, April 04, 2004 5:38 PM > To: [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED] > Subject: Re: [drakelist] R-4B question > > My R4B does NOT have the OB2, Drake removed that in the later R4A series, > early R4A had the OB2 and 6GX6 product detector, but the 11 tube version of > the R4A did away with it...73 Tim K8WBL > > > >>From: <[EMAIL PROTECTED]> >>To: "Ian" <[EMAIL PROTECTED]>, <[EMAIL PROTECTED]> >>Subject: Re: [drakelist] R-4B question >>Date: Sun, 4 Apr 2004 15:46:51 -0400 >> >>Ian: >> >>The R-4B still has the OB2 regulator. The R-4C uses a solid state >>regulator, in keeping with Drake's transition from tubes to solid state >>devices. You will note the significant reduction of the number of tubes in >>the C series. >> >>Removing tubes in the design reduced energy needed, cut down on heating >>problems, and increased reliability. >> >>Cheers, >> >>Al Link, K4ICL >>[EMAIL PROTECTED] >>139 Turner Circle >>Greenville, SC 29609 >>864 420-4652 >>www.K4ICL.com >> >>www.UREGS.org for Equipment Condition Rating Standards >> ----- Original Message ----- >> From: Ian >> To: [EMAIL PROTECTED] >> Sent: Sunday, April 04, 2004 11:09 AM >> Subject: [drakelist] R-4B question >> >> >> >> >> I'm a Drake newbie but thinking about getting an R-4B to relive my >> childhood. When was V11, the OB2 voltage regulator, introduced (or >> removed)? I think the R-4A has it but the R-4C doesn't. If it was >>removed >> as the series progressed, why? >> >> Also why is there no V6 in the schematic? >> >> 73 de Ian >> N8IK ---------------------------------------------------------------------- Submissions: [EMAIL PROTECTED] Subscribe: [EMAIL PROTECTED] - subscribe drakelist in body Unsubscribe: [EMAIL PROTECTED] - unsubscribe drakelist in body Hopelessly Lost: [EMAIL PROTECTED] - help in body of message Brought to you courtesy of TLCHost.net http://www.tlchost.net/ ----------------------------------------------------------------------
