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Old 03-28-2007, 07:22 PM   #16
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i bought a capacitor from spectrum and plugged it in and i'm off to the races on sat. hope this works. id like to have a trouble free race day.
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Old 04-06-2007, 08:36 PM   #17
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I'll get back to you tomorrow on that. I did the install (digging, routing, burying) but wasn't the one who bought the cable and stuff. I'll check tomorrow and re-post here...
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Old 04-06-2007, 10:19 PM   #18
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Quote:
Originally Posted by RC Scoring Pro
How about posting the Radio Shack Part #'s required ? I have a zillion people who want to make their own loop.

This works for me.

http://www.radioshack.com/product/in...tId=2062320&cp

The manual tells you to replace it with a 470 ohm resistor if its bad. It also tells you what the resistance of the coax should be.

I don't think the resistor wears out, more than likely bad/poorly protected connections or lightning strikes are the problem.

$.99 and an extra soda straw from McD's, little silicone and heat shrink, and your all fixed up.
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personal transponder problems-resistor.jpg   personal transponder problems-home-made-loop.jpg  

Last edited by Ed Anderson; 04-15-2007 at 07:10 PM.
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Old 04-08-2007, 01:05 PM   #19
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I stand corrected... The way it is set up at the track where I drive: they run the yellow AMB cable from the transponder receiver box a the loop that is buried which is standard low-grade coax cable that makes a loop and both ends come back together and are attached to a Deans connector. The AMB cable, having had the loop portion worn out years ago, ends past the first (larger) black box. Both smaller "loop wires" are connected to a Deans connector which attaches to the buried coax loop. But there is still no resistor.

I'll have to defer to Ed Anderson's post above for resistor info.

Oh, and I found this earlier today: aftermarket (cheaper) AMB compatible stuff:

http://users.bigpond.net.au/bigfix/t...rs/goodies.htm

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