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Radar D
Test Data

Believed to be a CMI Speedgun 6

Beamwidth: 18.8 degrees
Power (ERP): 34.25 milliwatts (15 dBm)
Detection Range: 320 feet to 0.92 miles (100 m to 1.48 km)
Low Voltage: 10.2 Vdc, Fails
Type: single unit (handheld)
Noted Abnormalities;
Patrol Target
actual 30-40 50-60
measured 12 80
16 72
20 57
17 68
RANGE TEST DATA
Range test conducted on straight stretch of open 2 lane highway 1.8 miles long. Radar operated from standard 4 door sedan.
PATROL CAR      TARGET       CLOSING     RANGE
Radar  mph   vehicle mph     sec  mph    miles  yards  feet   km

 D(5)  41     Pinto   35     3.0   76    0.06    105    320   0.1
  D    42     Pinto   44     4.2   86    0.1     175    530   0.16
  D    41     Pinto   52     4.6   93    0.12    210    630   0.19
 D(4)  41     Pinto   43     6.4   84    0.15    265    790   0.24
  D    43     Pinto   55     8.6   98    0.23    400   1210   0.37
  D    44     Pinto   50    11.8   94    0.31    545   1640   0.5

  D    42    T-Bird   45     4     87    0.1     175    530   0.16
  D    42    T-Bird   53    12     95    0.32    560   1690   0.51

  D    44   Winnabego 48    16.    92    0.41    720   2165   0.66
  D    43   Winnabego 60    32.1  103    0.92   1620   4860   1.48

(5) 41 mph radar (D) tracked 57 mph truck
    well behind 35 mph Pinto before tracking Pinto

(4) Also measured large truck in stationary mode:
    40 seconds at 53 mph, range 0.6 miles.


TRANSMIT FREQUENCY DATA
                           TRANSMIT      FREQUENCY FROM
      TEST CONDITION       FREQUENCY   AMBIENT   10.525 GHz
                              GHz        MHz        MHz
 AMBIENT TEMP, 13.6 Vdc     10.5391        -       14.1
-30 degrees C, 13.6 Vdc     10.5468       7.7      21.8
 60 degrees C, 13.6 Vdc     10.5193     -19.8      -5.7
 AMBIENT TEMP, 10.9 Vdc     10.5390      -0.1      14.0
 AMBIENT TEMP, 16.3 Vdc     10.5390      -0.1      14.0


-30 degrees Celsius (C) = -22 degrees Fahrenheit (F)
60 degrees Celsius (C) = 140 degrees Fahrenheit (F)


TUNING FORK DATA
NONE

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Police Traffic Speed Radar Handbook

Chapter 5.6 -- Radar D Test Data

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