Over-the-hill testing is difficult for radar detectors especially on our test track. It’s out in the wide open spaces with no signs or other objects to scatter the radar signal from the radar guns. It’s important that radar detectors give drivers warning to radar around the next corner or over the 
next hill. The HHR containing the radar guns was positioned 1/4 mile from the test cars over a 10˚ hill out of line of sight of the test vehicles. The test vehicle could not see the transmission vehicle. Here again, we exposed all detectors to both “instant on” and “constant on” radar transmissions as before for three and ten second respectively. Each detector was given three tries at “instant on” and three tries of “constant on” radar on each band. We used a Decatur GHD K band, a MPH X band SpeedGun, and a Stalker Dual for Ka at 34.7 GHz. These were the same guns used when we tested line of sight detection at 1 1/2 mile. All detectors were off except the one being tested. SML staff or police officers sat in each test vehicle to observe and report the results. Testing was conducted June 27-29, 2008 with follow-up on July 11-12, 2008. Maximum signal strength as before is indicated in parenthesis next to the name of the detector. Y means the detectors correctly identified the radar band encountered. N means the detector did not report the radar gun. Signal strength is to the right of the Y as in y/5 or a signal strength of five with the detector correctly reporting the encountered radar band. r means remote detector
| Detector | X band | K band | Ka band | ||||
| Instant | Contsant | Instant | Contsant | Instant | Contsant | ||
| Adaptiv Tech TPX (6) | y/4 | y/4 | y/3 | y/4 | y/1 | y/1 | |
| *reported as Ka | y/4 | y/3 | y/4 | y*/3 | y/2 | Y/1 | |
| y/3 | y/3 | y/5 | y/4 | y/1 | y/1 | ||
| Bel STi (7) | y/7 | y/7 | y/4 | y/5 | y/4 | y/5 | |
| y/7 | y/7 | y/4 | y/4 | y/4 | y/5 | ||
| y/5 | y/7 | y/4 | y/4 | y/5 | y/5 | ||
| Bel RX 65 (7) | y/1 | y/3 | y/1 | y/2 | y/2 | y/2 | |
| y/3 | y/4 | y/1 | y/1 | y/1 | y/2 | ||
| y/3 | y/3 | y/1 | y/1 | y/3 | y/2 | ||
| Cobra XRS 9950(5) | y/3 | y/2 | y/1 | y/1 | y/1 | y/1 | |
| y/1 | y/1 | y/1 | y/1 | y/1 | y/1 | ||
| y/2 | y/2 | y/1 | y/1 | y/1 | y/1 | ||
| Cobra XRS R9G (5) | y/1 | y/1 | y/1 | y/1 | y/1 | y/3 | |
| y/1 | y/2 | y/1 | y/1 | y/1 | y/1 | ||
| y/2 | y/3 | y/1 | y/1 | y/3 | y/3 | ||
| Passport 9500i (7) | y/4 | y/4 | y/3 | y/4 | y/5 | y/3 | |
| y/4 | y/4 | y/6 | y/4 | y/4 | y/5 | ||
| y/4 |
y/4 | y/3 | y/4 | y/5 | y/5 | ||
| Passport 9500ci (7 r | y/6 | y/6 | y/4 | y/4 | y/3 | y/2 | |
| y/5 | y/5 | y/6 | y/5 | y/3 | y/2 | ||
| y/6 | y/6 | n | y/4 | y/2 | y/2 |  |
|
| Valentine One (8) | y/5 | y/5 | y/6 | y/5 | y/5 | y/6 | |
| y/5 | y/5 |
y/5 | y/5 | y/6 | y/5 | ||
| y/5 | y/5 | y/5 | y/5 | y/6 | y/5 | ||
| Whistler XRT 695 (9) | y/9 | y/9 | y/3 | y/4 | n | y/2 | |
| y/9 | y/9 |
y/5 | y/5 | y/1 | y/1 | ||
| y/9 | y/9 | y2 | y/4 | y/n | y/2 | ||
POP Mode is used as a sales feature by only MPH Industries. The instruction manual states POP may not be used to issue speeding tickets as it’s speed can’t be locked, it allows no tracking history, and can be used only in the stationary mode. We tested both K and Ka POP. MPH says the short, 67 ms., transmission is so fast it can’t be detected by radar detectors. The Ka POP mode transmits at 33.8 GHz and was detected by all detectors except one encounter by the Cobra XRS 9G and all three tries by the TPX. However, the MPH Z-25 K band POP mode was not detected by any detector during any of the three tries per detector. We know it was transmitting as the gun showed the correct speed of the target vehicle. Test vehicles were told to travel at 30 mph with POP being transmitted at 500 feet. Only Oregon, Nevada, and Iowa have state contracts for POP. Contact us at
speed@speedinglimits.com.
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