Garey,
Tnx for the great suggestions!
Paul, W9AC
----- Original Message -----
From: "Garey Barrell" <[email protected]>
To: <[email protected]>
Sent: Sunday, June 19, 2011 4:57 PM
Subject: Re: [Drakelist] R-4B Notch Backlash & PTO movement
Paul -
Yes, the adjuster for the NOTCH is 'springy' like the Passband Tuner
slugs. The backlash is usually negligible if the cam slider surface is
clean and lightly lubricated.
Seems a little strange. Any 'play' in the front ball bearings is adjusted
out with the hex set screw accessible from the back end, just like the C.
Since it's only 'UP', I wonder if all three of the spade bolt nuts that
hold the PTO in the receiver are tight??
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>
Paul Christensen wrote:
Just noticed two very slight anomalies with my R-4B:
1) There's a small bit of Notch control backlash; and
2) There's a very small amount of VFO knob upward movement but no
side-to-side, nor downward movement. The slight upward movement does not
affect frequency stability.
Is this normal for the R-4B? I detect neither issue with my R-4C. Tnx!
Paul, W9AC
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