Alan -
Yes, almost identical circuits, just "refined" slightly for improved CW,
and reduced hum in the audio.
You can change the 6BN8 to an 8BN8 to get the reduced hum improvement.
73, Garey - K4OAH
Glen Allen, VA
Drake 2-B, 4-B, C-Line & TR-4/C Service Supplement CDs
<www.k4oah.com>
[email protected] wrote:
Gary
Performance wise are they virtually identical?
Alan KB7MBI
In a message dated 10/10/2009 8:39:45 A.M. Pacific Daylight Time,
[email protected] writes:
One additional bandwidth on the Passband Tuner, (0.5 kHz,) and one
changed bandwidth, (4.8 kHz changed to 3.6 kHz.)
One additional front panel slide switch to control power to the
accessory socket on the rear panel.
Tube changed from 6BN8 to 8BN8.
A couple of other tube types changed, one IF and one other I don't
recall.
The 2-A also didn't have the little red "knob" on the sliding dial
scale.!
73, Garey - K4OAH
Glen Allen, VA
Drake 2-B, 4-B, C-Line & TR-4/C Service Supplement CDs
<www.k4oah.com>
Sain'T Tom wrote:
> *What is the difference between the Drake 2A and the Drake 2B ?*
>
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