[Fourlanders] FW: [VHFcontesting] My sequencer project

[Fred Flowers]

Ron,
Do you have a building in mind?  Could I watch?
Fred
----- Original Message ----- 
From: "Rogers, Ron" <RR124640 at ncr.com>
To: <wa4kxy at bellsouth.net>; "'Fourlanders'" <fourlanders at contesting.com>
Sent: Monday, May 10, 2010 1:28 PM
Subject: Re: [Fourlanders] FW: [VHFcontesting] My sequencer project


> Could probably be used as a Ballistic Pyro sequencer for building 
> demolitions, too !
>
>
> Ron
> WW8RR
>
>
> -----Original Message-----
> From: fourlanders-bounces at contesting.com 
> [mailto:fourlanders-bounces at contesting.com] On Behalf Of Jim Worsham
> Sent: Monday, May 10, 2010 2:20 PM
> To: 'Fourlanders'
> Subject: [Fourlanders] FW: [VHFcontesting] My sequencer project
>
> Check this out.  Now that is a sequencer!
>
> 73
> Jim, W4KXY
>
>
> It doesn't matter how beautiful your theory is, it doesn't matter how 
> smart you are.  If it doesn't agree with experiment, it's wrong.
> Richard P. Feynman
> -----Original Message-----
> From: vhfcontesting-bounces at contesting.com
> [mailto:vhfcontesting-bounces at contesting.com] On Behalf Of John D'Ausilio
> Sent: Monday, May 10, 2010 12:22 PM
> To: (Radio) VHF Contesting; Microwave
> Subject: [VHFcontesting] My sequencer project
>
> The Intergalactic Roving Battle Jitney has undergone many a transformation 
> since the day I drove it away from Bill's house, and one of the first ones 
> was the consolidation of all of the microwave sequencing and switching 
> into a single box. The sequencing was done by a DEMI TRS connected to a 
> hand-wired board full of reed relays, and based on an input from my band 
> decoder it would steer sequencing signals to the correct 
> amps/relays/transverters/preamps for the selected band.
>
> This winter I felt it was time to re-rebuild the microwave box, and I 
> decided I'd put all the hand-wired sequencing stuff on a PCB.
>
> You can see the result at
> http://www.facebook.com/album.php?aid=423406&id=828010222&l=2d7896fd87
>
> The board accepts a PTT-L input and either 3 binary bits (normal or
> inverted) or 8 individual ground-per-band inputs to select a band. The 
> sequencer circuit is pretty much identical to the TRS except done all in 
> surface mount. Sequencer step 4 is hard-wired to a PTT-OUT connector. 
> Steps 1-3 route to a set of 3 connectors per band, and each step can be 
> jumped to provide +12 or ground when active.
>
> The main goal was to get rid of all the messy wiring .. this board will 
> mount to the rear panel of a 4U box I'm using and all of the phono jacks 
> on the rear will protrude through the many holes I still need to drill in 
> it ;)
>
> de w1rt/john
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