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
Garey, thanks for that correction! 73 Tim
From: Garey Barrell <[EMAIL PROTECTED]>
Reply-To: [EMAIL PROTECTED]
To: Tim Kass <[EMAIL PROTECTED]>
CC: [EMAIL PROTECTED], [EMAIL PROTECTED], [EMAIL PROTECTED]
Subject: Re: [drakelist] R-4B question
Date: Sun, 04 Apr 2004 23:23:30 -040
-
From:
[EMAIL PROTECTED]
To: Tim Kass ; [EMAIL PROTECTED] ; [EMAIL PROTECTED]
Sent: Sunday, April 04, 2004 6:05
PM
Subject: Re: [drakelist] R-4B
question
Tim is correct. I was thinking of the T-4XB. Sorry to have
been misleading.
Cheers,
Al Link, K4ICL[EMAIL
Gerry -
That +10V is also fed through small decoupling resistors to
the Band oscillator and the Calibrator oscillator.
73, Garey - K4OAH
Atlanta
Gerry wrote:
I seem to remember there were 2 versions of the R-4B or is it the R-4A
I'm thinking about?. The R-4B (sn#9182G) I have is a 10 tube job a
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
Tim -
Oops, sorry. V13 was the AVC amp, not audio. The diodes in
the 12AV6 weren't used.
73, Garey - K4OAH
Atlanta
Tim -
Not quite... The two tubes dropped from the "early" R-4A
were V6, the 6GX6 Product Detector, and V13, the AM detector
and first audio amp. The VR tube stayed on until the
ke 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 q
Gerry, check your R4B, probably only 9 tubes, tube #V6 is not there but they
list it. Tim
From: "Gerry" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>, "'Ian'" <[EMAIL PROTECTED]>,
<[EMAIL PROTECTED]>
Subject: RE: [drakelist] R-4B qu
Family Affair" makes no real mention of this as well
as I can remember. 73 Tim K8WBL
From: "Ian" <[EMAIL PROTECTED]>
To: "'Tim Kass'"
<[EMAIL PROTECTED]>,<[EMAIL PROTECTED]>,<[EMAIL PROTECTED]>
Subject: RE: [drakelist] R-4B questi
resistor to a 1N714 zener in the PTO enclosure.
-Original Message-
From:
[EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED]
Sent: Sunday, April 04, 2004 3:47
PM
To: Ian;
[EMAIL PROTECTED]
Subject: Re: [drakelist] R-4B
question
Ian:
The R-4B still has
To: [EMAIL PROTECTED] ; [EMAIL PROTECTED] ; [EMAIL PROTECTED]
Sent: Sunday, April 04, 2004 5:38
PM
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
ECTED]; [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]
>
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
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
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