[Coco] Coco 2 RF

[Mike Rowen]

Thanks, Mark!

On Tue, Feb 21, 2012 at 1:59 PM, Mark Ormond <markormond at mtxsystems.com>wrote:

> Here you go.
>
> http://www.flickr.com/photos/88304118@N00/sets/72157629421064317/
>
>
> Later,
> dabone
>
> -----Original Message-----
> From: coco-bounces at maltedmedia.com [mailto:coco-bounces at maltedmedia.com]
> On Behalf Of Mike Rowen
> Sent: Tuesday, February 21, 2012 1:45 PM
> To: CoCoList for Color Computer Enthusiasts
> Subject: Re: [Coco] Coco 2 RF
>
> Mark, some pics of your original board might be helpful. While I can build
> and test this, my circuit analysis skills are shakey at best. It would be
> great to establish a known working circuit. I'm willing to prototype it if
> others will provide circuit guidance. Does anyone know if the originator of
> this or other circuits are still out there to get their input or even
> release their schematics? Also, I don't think anyone wants to step on
> anyone's product rights. Thoughts anyone?
>
> Cheers,
> -Mike
>
> On Tue, Feb 21, 2012 at 12:02 PM, gene heskett <gheskett at wdtv.com> wrote:
>
> > On Tuesday, February 21, 2012 11:56:54 AM Mike Rowen did opine:
> >
> > > I'm intending to build and test this circuit on a CoCo 2 this weekend.
> > > I'll post my results here to let you know if/how it works.
> > >
> > > Cheers,
> > > -Mike
> > >
> > > ---------- Forwarded message ----------
> > > From: Mark Ormond <markormond at mtxsystems.com>
> > > Date: Tue, Feb 21, 2012 at 7:56 AM
> > > Subject: Re: [Coco] Coco 2 RF
> > > To: CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com>
> > >
> > >
> > > I copied the board layout of one I have in mine. The copied
> > > schematic is currently untested.
> > > Why don't you try it and let me know if there are errors.
> > > I can post pics of the original board also.
> > >
> > >
> > > http://www.svfdtn.com/cbm/coco2comp.jpg
> > >
> > >
> > >
> > >  GND = GND
> > >
> > >  G = Pin 8 of MC1372P
> > >
> > >  Y = Y on Modulator
> > >
> > >  S = S on Modulator
> > >
> > >  R = Left side of C32 (Looking from front)
> > >
> > >
> > >
> > >  Later,
> > >
> > >  dabone
> >
> > Hi Guys;
> >
> > I looked at your schematic, but one thing I don't see is a src of bias
> > drive for the bottom NTE123ap.  So that isn't going to do much unless
> > that coupling capacitor comes from a positively biased point, and is a
> > pretty leaky capacitor, something they are not supposed to do.
> >
> > Cheers, Gene
> > --
> > "There are four boxes to be used in defense of liberty:
> >  soap, ballot, jury, and ammo. Please use in that order."
> > -Ed Howdershelt (Author)
> > My web page: <http://coyoteden.dyndns-free.com:85/gene>
> > <joeyh> netgod: er, are these 2.2.0 packages 2.0.0pre9 or do you have a
> >        direct line with the gods?
> > <netgod> joeyh: i have the direct line
> >
> > --
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> > Coco at maltedmedia.com
> > http://five.pairlist.net/mailman/listinfo/coco
> >
>
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