Steve -
No 'Secret Squirrel' decoder ring here, just having built linear amps a long time ago I knew that an
amp with that plate impedance at the tubes needs about 2200 pF at the antenna side for 80M.
Yeah, it wouldn'ta killed them to add a '/sect' on the schematic!! :-)
73, Garey - K4OAH
Glen Allen, VA
Drake 2-B, 2-C/2-NT, 4-A, 4-B, C-Line
and TR-4/C Service Supplement CDs
<www.k4oah.com>
Steve Wedge wrote:
I stand corrected - and when I look at the T-4X manual, they did label *that* cap as "13.5 - 486
PER SECTION". I'm surprised they missed that labeling on the L-4B schematic but that seems to be
the case.
Steve Wedge, W1ES/4
I swear by my life, and my love of it, that I will never live for the sake of another man, nor ask
another man to live for mine.
-Ayn Rand.
All my computers have my signature with various pearls of wisdom appended
thereto.
--------------------------------------------------
From: "Garey Barrell" <[email protected]>
Sent: Sunday, November 13, 2011 9:43 PM
To: "Louie Hanson Jr." <[email protected]>
Cc: <[email protected]>
Subject: Re: [Drakelist] Drake L4B Load Capacitor
Louie -
I'd say that's 'per section', for a total of about 1750 pF, plus another fixed 1000 pF switched
in for 80M. Those values would be typical for matching a pair of 3-500Z to 50 ohms.
73, Garey - K4OAH
Glen Allen, VA
Drake 2-B, 2-C/2-NT, 4-A, 4-B, C-Line
and TR-4/C Service Supplement CDs
<www.k4oah.com>
Louie Hanson Jr. wrote:
I have a question on the Load Capacitor on the Drake L4B. On the schematic it shows a 4 section
variable capacitor with a shown value on the schematic of 16-437uf. My question is, is that the
single sections value or the total of all 4 sections?
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