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Radar E
Test Data

Believed to be a CMI Speedgun 8

Beamwidth: 18.6 degrees
Power (ERP): 39.2 milliwatts (16 dBm)
Detection Range: 400 feet to 0.55 miles (120 m to 0.89 km)
Low Voltage: 10.3 Vdc, Warning displayed
Type: single unit (handheld)
Noted Abnormalities;
Patrol Target
17 74
11 41
This effect did not occur every time a truck passed. Radar measured patrol speed decreased momentarily several times when a passenger sedan passed patrol car.
RANGE TEST DATA
Range test conducted on straight stretch of open 2 lane highway 1.8 miles long unless otherwise noted.
(3) indicates test conducted on secondary road paralleled by high tension power lines
mounted from metal poles. Radar operated from standard 4 door sedan.


PATROL CAR      TARGET       CLOSING     RANGE
Radar  mph   vehicle mph     sec  mph    miles  yards  feet   km

  E    42     Pinto   37     3.4   77    0.075   130    400   0.12
  E    41     Pinto   39     4.0   80    0.09    160    475   0.14
  E    40     Pinto   38     4.0   78    0.09    160    475   0.14
  E    41     Pinto   45     4.0   86    0.1     175    530   0.16
  E    41     Pinto   49     4.4   89    0.11    190    580   0.18
  E    51     Pinto   48     5.0   99    0.14    245    740   0.23
  E    23     Pinto   43    17.6   66    0.32    560   1690   0.51
  E    32     Pinto   37    23.7   69    0.45    790   2375   0.72

 E(3)  37    T-Bird   51     7.4   88    0.18    315    950   0.29
 E(3)  42    T-Bird   51    17.8   93    0.46    810   2430   0.74
 E(3)  45    T-Bird   50    20.8   95    0.55    970   2900   0.89


  E    40   Winnabego 44     6.5   84    0.15    265    790   0.24
  E    43   Winnabego 44     8.1   87    0.20    350   1050   0.32
  E    42   Winnabego 52     8.5   94    0.22    390   1160   0.35
  E    42   Winnabego 52     8.5   94    0.22    390   1160   0.35
  E    42   Winnabego 58    18.4  100    0.51    900   2690   0.82

(3) indicates test conducted on secondary road paralleled by high
    tension power lines mounted from metal poles.


TRANSMIT FREQUENCY DATA
                           TRANSMIT      FREQUENCY FROM
      TEST CONDITION       FREQUENCY   AMBIENT   10.525 GHz
                              GHz        MHz        MHz
 AMBIENT TEMP, 13.6 Vdc     10.5445        -       19.5
-30 degrees C, 13.6 Vdc     10.550        5.5      25.0 (FCC band limit)
 60 degrees C, 13.6 Vdc     10.5416      -2.9      16.6
 AMBIENT TEMP, 10.9 Vdc     10.5444      -0.1      19.4
 AMBIENT TEMP, 16.3 Vdc     10.5446       0.1      19.6


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


TUNING FORK DATA
RESONANCE
FREQUENCY   CALCULATED  LABELED
   Hz          mph        mph
 1092.3       34.80       35
 2750.0       87.62       88

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Police Traffic Speed Radar Handbook

Chapter 5.6 -- Radar E Test Data

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