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 Post subject: TM-1550 false triggers
PostPosted: Sun Apr 30, 2017 10:52 am 
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I have a set where I have placed a TM-1550 transmitter in the open and exposed to sunlight (it is next to the deer's leg below).
The receiver side is shaded and secured to a tree. About twice a week, I will get a couple of hours of almost continuous false triggers, usually between 10am and 2pm. Seems like heat or sunlight causes these failures. The transmitter and receiver are stable and I have removed vegetation. Is this a known issue? Which fixes seem to work best?
I'd like to set up this way so I can eventually capture some starry sky in the background.

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PostPosted: Mon May 01, 2017 10:31 am 
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Location: Nebraska
Check for moisture in the housing. If it has been mounted as shown in the picture and it has rained it is probably full of water. There are two holes in the bottom of the housing plus the switch is not waterproof.

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PostPosted: Tue May 02, 2017 5:12 pm 
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Agree with Jeff. I once placed a 1550 at a similar angle. It was wrecked after a big rain storm.


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PostPosted: Tue May 02, 2017 7:31 pm 
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Thanks guys, vent hole orientation was not something I had ever considered.
Trigger problem persists so I'm experimenting with sun shades.
This site gets a lot of low early morning light since it is on a mountain.
I noticed the manual specifically mentions sun near the horizon as an issue.


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PostPosted: Thu May 04, 2017 7:34 pm 
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I caught the TM-1550 in a runaway condition this afternoon and was able to experiment until the false triggers stopped. Lesson learned was that, in very bright sunlight, alignment becomes critical. Establishing a very good alignment eliminated the problem.


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