HW 101 Dial

[Stu Lyon]

Take a look at the HW-101 block diagram. The VFO subtracts from the 1st IF
frequency to convert down to the 2nd IF. Thus the "backward" tuning.

The SB-line use a pinch drive which is sorta like a gear drive in that it
reverses the rotations. A CW rotation on the knob lowers the LMO frequency
which increases the receive frequency.

73, Stu W6CUX
Winnetka, CA

----- Original Message -----
From: "Charles W Tannehill" <jltanehill1 at JUNO.COM>
To: <HEATH at LISTSERV.TEMPE.GOV>
Sent: Thursday, November 27, 2003 8:52 PM
Subject: HW 101 Dial


> Hi group, I'm rebuilding an HW 101 and have a question about the
> frequency dial. When I turn the VFO knob clockwise, the dial turns
> clockwise indicating tuning to a lower frequency. At the same time, the
> variable capacitor in the VFO opens to a lower capacitance indicating it
> should be tuning to a higher frequency. The jackson drive is smooth in
> operation. Is this normal? 73's, Leon Tannehill KG4JRK.
>

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