[Boatanchors] HW-16 QUESTION

[Ed - K9EW]

Hi Bill,

>From the Circuit Description of the HW-16 manual:

"The screen grid of pentode V7 serves as the plate of a crystal controlled
triode oscillator.  The oscillator operates at the fundamental frequency of
an 80- or 40- meter crystal."

"The complete pentode acts as an amplifier for the oscillator signal on the
control grid.  The plate load is a tuned tank circuit on 40-meter signals,
but the coil acts as an RF choke on 80-meters.  (Capacitor C7 couples the
signal to the driver stage.)"

The Parts List calls it out as a "40 meter oscillator coil".

Sure sounds like it's for 40m.

73,
ed - k9ew



On Sat, Feb 18, 2012 at 12:06 PM, Bill and Liz <magoo at isp.ca> wrote:

> Can someone with an HW-16 manual tell me if L8 (plate of V7-6CL6
> oscillator) is tuned to 15 or 40 meters?  I'm having a bit of a problem and
> this information would greatly help me to solve it.  By the size of the cap
> across the coil it would appear it should be 15M but it does not dip there
> and it looks as if the unmarked cap is not something Heath would supply.
>
> Bill VE3NH
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