A few years ago I designed and built a BCD decoder system for my
VHF/UHF/Microwave roving trailer. Had enought interest that I had PBCs made
for it.
Check this out at : http://www.nitehawk.com/w3sz/VHFLogInterface.htm
If interrested ... Kits are no longer avaliable, but still have PC boards
(professional, double sided w/ plate thru, silk screened, at $20.00 & S+H.
All proceeds go the the Mt. Airy VHF Club (Packrats) to fund their annual
conference.
73
Steve, N3FTI
--- On Sun, 5/30/10, Pete Smith <n4zr@contesting.com> wrote:
> From: Pete Smith <n4zr@contesting.com>
> Subject: [TowerTalk] BCD relay driver ideas needed
> To: TowerTalk@contesting.com
> Date: Sunday, May 30, 2010, 12:27 PM
> I bought an Ameritron RCS-10 antenna
> switch at Dayton, particularly
> because of its BCD control protocol. My thought was
> to use the BCD band
> data output from my shack computer, running N1MM Logger, to
> control the
> remote relay box in parallel with the manual
> controller. But in order
> to do that, I will need 3 relay drivers to supply the
> needed current,
> and presumably, will also need a level shifter because the
> relays want
> 12 volts, while my LPT port is 5.
>
> Has anyone already been down this road, so I won't have to
> reinvent the
> wheel? Is there a way to use traditional PNP
> transistor source drivers,
> but with 5 volts on the base and 12 volts on the
> collector?
>
> 73, Pete N4ZR
>
> The World Contest Station Database, updated daily at
> www.conteststations.com
> The Reverse Beacon Network at http://reversebeacon.net, blog at
> reversebeacon.blogspot.com
>
> _______________________________________________
>
>
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk@contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
>
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|