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Mo · Joined: 30 May 2007 Posts: 1

I bought a Skylink GM-318 and two transmitters to indicate if my Garage doors are still open at night. I programmed them on my workbench, and manually acuated the door sensors by moving the cylinders to see if the receiver worked properly. It did after this test. Once I moved the receiver unit into the bedroom (after mounting the transmitters to the doors), the receiver intermittently blinks zone 1, 2, 3 (but never 4) twice and pauses, and then repeats itself (blink, blink, pause, blink, blink, pause.......) Sometimes Zone 1 and 2 do this together, sometimes only Zone 2 an sometimes Zone 3. Is the problem not enough signal from the transmitters? The receiver is about 20-30 feet laterally and 10-12 feet vertically from the transmitters.

Power cycling the receiver usually fixes this problem... for awhile, then random operation resumes. I have contacted Skylink, and after quite a delay they suggested that I send the unit back to them, but I get the impression from the way the email was worded that they don't really think that there is an issue.

Before I sent this unit to Skylink, I would like to rule out:
1) Interfering sources
2) Intermittent operation from the transmitters.
3) Inrorrect set up code combinations

Regarding the set up codes: Are there any "better or worse" ones?

Is there any way to do this with a spectrum analyzer? I have access to an Agilent 8593E and an Anritsu MS4630B if this helps. I could possibly look for interfering sources using them and a directional antenna.

Ralph · Joined: 16 Dec 2005 Posts: 165 Location: Smithtown, NY

Hi Mo,

I am waiting for a response from Skylink, I will have an answer for you on Monday.

waldorfra · Joined: 04 Jul 2007 Posts: 1

I'd be curious to hear what SkyLink says as I am having a similar issue. Everything seemed to work when I tested before installing.

The system setup was very quick and easy, yet after installing the transmitters on the garage doors, I tend to have situations where a transmitter triggers an alert when the garage door opens, but does not turn off when the door closes.

This has happened on a couple times with different zones.

Thanks,
Randy