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Rob09/11/2019
It works on GPS, cell phones and 2.4GHz WiFi but it does not affect 5GHz WiFi. I confirmed the function by viewing the specified frequency slots for GPS, cell, Lo Jack and WiFi using an SDR receiver. The N8 Anti Tracker does not transmit in the 5GHz WiFi band. My Verizon LTE phone dropped a conversation as soon as the N8 was turned on. The 173MHz Lo Jack frequency was only slightly affected by turning on the #2 switch. Lo Jack was not affected by any of the other switches. In the manual, "BD" stands for BeiDou, the Chinese GPS system.
The switch numbers and antenna numbers coincide. Flipping the 8 DIP switches on determine what is transmitted.
Switch and Antenna #
1. 3G PHS ? (I could not determine what frequency was transmitted)
2. CDMA 800: 851-894MHz
2. GSM 900: 925-960MHz
2. LO JACK: 173MHz (weak signal)
3. DCS 1800: 1805-1880MHz
4. WiFi 2.4G/4G: 2400-2500MHz (does not affect 5GHz WiFi)
5. BeiDou Chinese GPS/LTE800: 791-821MHz
6. GPS: 1570-1580MHz
7. 3G1 WCDMA: 2110-2170MHz
8. 4G1 LTE2600: 2620-2690MHz
I received the European style 240v converter instead of the US 120v needed but I had a spare 12v 2amp +center adapter so it was no problem. You might want to send them a note to remind them to send the correct adapter.
The 12v DC in jack on the N8 is off center but the plug works and charges the unit.
Overall I am impressed with the N8 Anti Tracker.
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