I was thinking I'd seen that paragraph before as well. Sort of like the "do
not open: no user-serviceable parts inside". Appropriate for "the guy off
the street" but it's a challenge to we who know...
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: Wednesday, November 23, 2011 2:05 PM
To: "geoffrey mendelson" <[email protected]>
Cc: "Drake List" <[email protected]>
Subject: Re: [Drakelist] I've got a job ahead of me.
Geoff -
That statement is included in just about every Drake manual, just by
substituting the model in question.
That said, there definitely ARE places in ALL of this gear where a circuit
can be made to work with a lead in one position, but NOT in another
position, even though electrically the circuit is correct. This is
typically a factor in circuits with very low value capacitors involved,
neutralization and Carrier Oscillator balance for example. Other cases
may involve very high impedance circuits where unwanted signals or
feedback can be coupled from one area to another via a wire lead. The
AVC, detector and audio stages are examples of this kind of problem.
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>
geoffrey mendelson wrote:
On Nov 23, 2011, at 7:47 PM, Steve Wedge wrote:
TNX to all for responding - this is my first SPR-4, so all comments are
welcome!
Here's the actual quote, from page 19 of the manual:
"CARE SHOULD BE TAKEN NOT TO DISTURB THE LEAD
DRESS IN THE SPR-4 SINCE THIS. IS CRITICAL IN
SEVERAL CIRCUITS."
Geoff.
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