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  1. #1
    Senior Member modsl55amg's Avatar
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    Quote Originally Posted by radargeek View Post
    The Dragon algorithm relies on 2 or more heads seeing the signal while jamming. When using a tester fired at a single head, the response may vary from head to head because of this. The ALP treats each head differently when jamming Dragons. This is why port F2 always has to have a head connected and it be the center head when running a triple up front.

    Traffipatrol XR isn't used in the USA so the USA ALP doesn't alert to this one. Same for Reigl and Laveg.
    Thanks, radargeek, for the info regarding the TraffiPatrol XR.

    Concerning the different alert sounds on the exact same 4 sensors versus the alert sounds for the remaining 6 sensors on the two ALP systems on my two cars.....I think you have "hit the nail on the head". This is exactly what I was wondering about, when there is a different sound from the front center sensor. A front center sensor seems to be extremely important, and seems to be almost a requirement, in order to defend against the DET. Then, when I also found that the right rear sensor made the same alert sound, I felt that the right rear sensor might do something different when defending against the DET, maybe something like the Front Center Sensor is doing, whatever that is.

    To explain the situation again, I can duplicate/replicate the test I conducted over and over and over, etc. . With my two ALP systems, on two different cars, set to Unlimited and Pro Mode, no matter how many times I transmit pre-progammed frequency 9 (DET) towards the Driver's Side Front sensor, the Passenger Side Front Sensor, and the Driver's Side Rear sensor, I get the buzzer-like sound after the initial "Whop Whoop, Dragon Eye Ahead/Behind, buzzer-like sound" until I stop transmitting. However, when I transmit frequency 9 (DET) towards the Front Center sensor, or the Passenger Side Rear sensor, I get the alert "Whoop Whoop, Dragon Eye Ahead/Behind, then NO BUZZER-LIKE SOUND, BUT AN EXTREMELY QUICK WHO WHO WHO WHO". The Who Who Who sounds like a truncated/shortened version of the Whoop Whoop. THE EXACT SAME TEST RESULTS CAN BE DUPLICATED/REPLICATED OVER AND OVER AGAIN, THEY NEVER CHANGE. I realize that in a real-life situation the system would have been "Killed' long before the "Buzzer-like sound" alert, or the "No buzzer-like sound alert but "Who Who" alert instead, so no one would have ever heard the difference. In a real-life encounter the system would have done its job, the driver would have done his/her job and "killed" the system, so everything is OK. But, I am curious/interested to know WHY the DIFFERENT alert sounds for the full DET alerts from ONLY the Front Center and the Passenger Side Rear sensors, no matter how many times I transmit towards those two sensors in numerous tests.

    I realize this is not a "life or death" inquiry, just a curiosity question, due to my interest in wanting to know WHY my ALP systems do what they do, when they do it.

    Thanks for everyone's replies.

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    Quote Originally Posted by modsl55amg View Post
    Thanks, radargeek, for the info regarding the TraffiPatrol XR.

    Concerning the different alert sounds on the exact same 4 sensors versus the alert sounds for the remaining 6 sensors on the two ALP systems on my two cars.....I think you have "hit the nail on the head". This is exactly what I was wondering about, when there is a different sound from the front center sensor. A front center sensor seems to be extremely important, and seems to be almost a requirement, in order to defend against the DET. Then, when I also found that the right rear sensor made the same alert sound, I felt that the right rear sensor might do something different when defending against the DET, maybe something like the Front Center Sensor is doing, whatever that is.

    To explain the situation again, I can duplicate/replicate the test I conducted over and over and over, etc. . With my two ALP systems, on two different cars, set to Unlimited and Pro Mode, no matter how many times I transmit pre-progammed frequency 9 (DET) towards the Driver's Side Front sensor, the Passenger Side Front Sensor, and the Driver's Side Rear sensor, I get the buzzer-like sound after the initial "Whop Whoop, Dragon Eye Ahead/Behind, buzzer-like sound" until I stop transmitting. However, when I transmit frequency 9 (DET) towards the Front Center sensor, or the Passenger Side Rear sensor, I get the alert "Whoop Whoop, Dragon Eye Ahead/Behind, then NO BUZZER-LIKE SOUND, BUT AN EXTREMELY QUICK WHO WHO WHO WHO". The Who Who Who sounds like a truncated/shortened version of the Whoop Whoop. THE EXACT SAME TEST RESULTS CAN BE DUPLICATED/REPLICATED OVER AND OVER AGAIN, THEY NEVER CHANGE. I realize that in a real-life situation the system would have been "Killed' long before the "Buzzer-like sound" alert, or the "No buzzer-like sound alert but "Who Who" alert instead, so no one would have ever heard the difference. In a real-life encounter the system would have done its job, the driver would have done his/her job and "killed" the system, so everything is OK. But, I am curious/interested to know WHY the DIFFERENT alert sounds for the full DET alerts from ONLY the Front Center and the Passenger Side Rear sensors, no matter how many times I transmit towards those two sensors in numerous tests.

    I realize this is not a "life or death" inquiry, just a curiosity question, due to my interest in wanting to know WHY my ALP systems do what they do, when they do it.

    Thanks for everyone's replies.
    I think there's something asymmetric about the way the ALP jams those guns. In other words, the F2 head has a different role than the F1 and F3 heads. If there weren't, you would be able to put any head in any port. I'm assuming that Passenger Side Rear is plugged into R2 on your systems? If you've got an IR camera that can "see" the infrared pulses, I'd be interested in seeing if there's any visible difference between what's happening at each head.

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    modsl55amg (03-25-2016)

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