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Date Posted: 03:31:35 01/20/03 Mon
Author: Potter
Subject: Re: Rogers (Toronto) setup
In reply to: Pokey 's message, "Rogers (Toronto) setup" on 14:36:10 01/19/03 Sun

In my experience you don't want it to lock to unscrambled channels anyway (undesirable results) - it should simply feed them through untouched.
I'd check first for good clean ned & ped pulses on a scrambled channel.

>I've put together a Canton3 using rev7t1a with a f870.
> It's on a breadboard right now and so far I can't get
>it to lock on an unscrambled channel. Any one know if
>this circuit is too sensitive to operate on a
>breadboard? I've adjusted the cap and was able to get
>a two second lock on channel 71 (scrambled) and
>intermitent locks on unscrambled channels. But never
>longer than two seconds. When it did lock on channel
>71 the picture was black and white and offset to the
>upper right.
>
>I've adjusted the video gain pot to 220ohms and set
>the clamp, burst, and output pots to the middle of
>their ranges. Is there a good range I should set
>these pots to? I tried switching the 10kohm resistor
>in the oscillator with an 8.2kohm with no success. I
>read in a previous post that it shifted the oscillator
>frequency higher.
>
>I think it isn't locking continuously because I can't
>adjust the variable capacitor in small enough
>increments. I know the PIC works because I
>reprogrammed it to flash the LED on and off. I then
>adjusted the cap across it's full range and the LED
>continued to flash.
>
>Any ideas? Jain, Vlad, what settings do you use with
>your canton3?
>
>Thanks
>Pokey

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