[R-390] R390a - S.S.B.

Tue, 14 Jan 2003 19:00:38 -0500

I've worked on a unit that had that modification done.  The unit I worked on
had problems with the relay that must be added to the IF deck to make this
thing work properly.  There are several versions of the Capt. Lee mod, so
look for the later ones if you plan to do it.  It certainly falls into the
category of not-easily-reversible modifications, which I tend to avoid.

Walter Wilson - KK4DF
http://r-390a.us
(REAL Radios: R-390A, R-390, T-368E, Ranger, Thunderbolt, KWM-2A)

----- Original Message -----
From: "MURPH" <[email protected]>
To: <[email protected]>
Sent: Tuesday, January 14, 2003 6:49 PM
Subject: [R-390] R390a - S.S.B.

> Has anyone done the W3JHR Captain John Lee modification i.e. - Changing
> the bfo to a product detector using a 6BE6 ? It's suppose to fix all the
> SSB ailments and the AGC problem is addressed by adding a 1.0 mfd cap
> from  pin 10 to ground on the AGC switch S107.
> January 68 CQ magazine.
> Richard
>
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