hw-101 cw (part 2)

[John Campbell]

Check carefully down around the "notes" area of the schematic diagram. The
diagram on my SB-401 has a small schematic (along with parts values) of the
PEC in the tone oscillator. It is indeed an RC arrangement. Looks like it
might be some kind of phase shift oscillator arrangement.
                            73......John   <<w8jnc>>

>From: wa1vwl <wa1vwl at GROLEN.COM>
>Reply-To: wa1vwl <wa1vwl at GROLEN.COM>
>To: HEATH at LISTSERV.TEMPE.GOV
>Subject: Re: hw-101 cw (part 2)
>Date: Mon, 20 Dec 1999 09:22:05 -0500
>
>My guess is the PEC is nothing more than R's and C's which makes for some
>kind of phase shift oscillator. The only problem (it's a big one) will be
>guessing what values R's and C's were used.
>----- Original Message -----
>From: n7kbj <n7kbj at ONEIMAGE.COM>
>To: <HEATH at LISTSERV.TEMPE.GOV>
>Sent: Sunday, December 19, 1999 7:13 PM
>Subject: hw-101 cw (part 2)
>
>
>Part 2:  with the help of several who replied to my first post, I found
>several
>resistors that had gone out of spec - replaced them and some electrolytic
>caps

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