Xref: utzoo rec.autos:22147 sci.electronics:7638 Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!csd4.csd.uwm.edu!uakari.primate.wisc.edu!ctrsol!cica!iuvax!rutgers!dptg!att!cbnewsl!floyd!fjs From: fjs@floyd.ATT.COM (Fred Shubert ,2A-154,3094,ATTBL) Newsgroups: rec.autos,sci.electronics Subject: POLICE RADAR--SPECIFICATIONS Keywords: X, K, Ka radar specifications Message-ID: <1739@cbnewsl.ATT.COM> Date: 2 Sep 89 14:08:17 GMT Reply-To: fjs@floyd.ATT.COM Organization: AT&T Bell Laboratories Lines: 113 With all the talk on police radar, some facts might help: I wish to contribute to the net some specifications on the MPH Industries K-55 radar unit. It is the present industry [police] standard unit: UNIT OPERATING SPEED: Patrol- 20MPH to 55MPH (above 55/below 20 available on request) TARGET SPEED: 20MPH minimum to maximum 209MPH closing speed 20MPH to 100MPH while patrol is stationary SPEED VALIDATION: target speed 50MPH: 100 comparisons in 1/8 sec. target speed 70MPH: 140 comparisons in 1/8 sec. RFI PROTECTION: when excessive RFI is present, no readings will be displayed CALIBRATION ADJ: NONE- fixed TIME BASE: Crystal oscillator +- 5 % LOCK TIME: Instantaneous ACCURACY: +- 1MPH Absolute ANTENNA ANTENNA TYPE: Circularly polarized conical horn OPERATING FREQ: X-Band: 10.525 GHz +-21.05MHz K-Band: 24.150 GHz +-48.3MHz OUTPUT POWER X-Band: Nominal 13-30mW Maximum 50mW K-Band: Nominal 12-50mW Maximum 95mW RADIATED PWR DEN: < 1mW/cm^2 @ 5cm (in accordance with microwave oven stds.) BEAM WIDTH: X-Band: maximum 18 degrees K-Band: maximum 15 degrees SIDE LOBES: 24dB down from main beam RANGE: 2500 feet for avg vehicle size. Range varies by size of vehicle, terrain, weather. AND THE EVER POPULAR Ka-BAND RADAR UNIT (made by Zellwager Uster AG [Switzerland] for Traffic Monitering Technologies of Friendswood Texas) UNIT MEASURING DIRECTION: Oncoming traffic MEASURING RANGE: 15MPH to 155MPH MEASURING ACCURACY: <= 100MPH +- 1MPH > 100MPH +- 1% ELECTRONIC FLASH: 170W/340W RECHARGE TIME: 170W 0.9 sec. 340W 1.8 sec. ANTENNA TRANSMIT FREQUENCY: 34.3 GHz +- 100MHz TRANSMITTED POWER: 0.5mW MAXIMUM TYPE OF ANTENNA: parabolic reflector HALF-PWR BEAM WIDTH: 5 degrees horizontal 5 degrees verticle SECONDARY LOBE ATTEN: > 20dB MEASURING ANGLE TO DIRECTION OF TRAVEL: 22 degrees RANGE: Designed for 50 feet with downward transmission @ 22 +- 3 degrees beam width. Beam makes 5 degree angle with ground at 50 feet. ------------------------------------------------------------------------------ Fred J. Shubert | "You haven't lived until you've seen a 'cat fly!!!" AT&T Bell Labs |----------------------------------------------------- Whippany, N.J. | DISCLAIMER: All views are that of my own. PERIOD. Ma-Bell 201-386-3094 | Who else could be so 'cat crazy!! ------------------------------------------------------------------------------ \ _ / \ /^ ^\ / F-14D ____________\_( . )_/____________ SUPERTOMCATS --*/--|_| (___) |_|--\*-- RULE * O O * (I Love 'Em) Let's turn and burn!! ------------------------------------------------------------------------------ Fred J. Shubert | "You haven't lived until you've seen a 'cat fly!!!" AT&T Bell Labs |-----------------------------------------------------