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Using WTN with non-ALGE timers
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I was looking for a wireless system for those occasions when there is no hill wire in place. I like the WTN network because it utilizes a mesh network (802.15.4 to be specific). A mesh system overcomes the problem of not having line of site on a ski hill by allowing you to place relay radios at all the high points along the trail.

So we purchased a pair of WTN "yellow" boxes and a set of PR1aW (Wireless) photocells. If I had a Timy or TDC8001 I would connect the WTN to the timer using the 25-pin D-sub connector. But no such luck, I use Tag Heuer PTB605s. However the WTN can still be used as an impulse transmit provided that you have some free time and a soldering iron. So I threw together a quick adapter that routs the impulse pins on the D-sub to some banana-jacks that I had. Note that the WTN adds a constant 0.1s delay to allow the impulse to propagate through the mesh network and you will lose the impulse "retransmit" functionality. So to be safe you should directly wire some backup timers at the photocells/start gates to be safe. You can see the final product in the attached picture.

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WTN adapter
 
Posts: 32 | Registered: February 23, 2005Report This Post
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Instead of using the 25 pin D-sub, couldn't you use the banana plug jacks on the WTN "yellow" box as the impulse output to the timer? Maybe Fred can answer.
 
Posts: 13 | Registered: December 09, 2005Report This Post
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Yes, you can use the black and red banana jacks for a single impulse output to a timer. However I run multiple input devices (2x PR1aW photocells and another WTN configured as an input), so I wanted to be able to send all 5 possible channels to a timer.
 
Posts: 32 | Registered: February 23, 2005Report This Post
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Curious, if you have to wireless photocells, can you use two WTNs, each with output for each photocell?
 
Posts: 13 | Registered: December 09, 2005Report This Post
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Yes. Just set them up with different "team" settings
 
Posts: 1469 | Location: Trexlertown, PA, USA | Registered: September 10, 2002Report This Post
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