Police Life - Working Radar

Marconi Radar System

When I worked radar detecting speeding vehicles in the mid-70s, we used Marconi static radar equipment.

At left is a more modern version than we used. Ours was a grey box with four legs that sat on the side of the road and cast a radar beam at 45 degrees forward across the road. It had a round dial with speeds from zero to about 140 km/hr.

When we began our shift, we'd pick up a police vehicle, a 12 v battery (same as a car battery), the Marconi set, a spool with several hundred metres of dual-core cable, an office chair, and an audio box. It was fairly primitive.

When we chose a scene, we'd set everything up and then drive our police car through the radar beam at 60 and 80 km/hr to check that the radar was working correctly.

We'd roll out the dual-core cable to the place where we would stop offenders, and hook it up to the audio speaker.

Then we'd get to work. We'd hide the vehicle and a sergeant would operate the Marconi.

When a vehicle exceeded the speed limit by over 10 km, the sergeant would say something like, "74 on the green Mazda". We'd walk out onto the road and signal the driver to stop.

We'd then advise the driver we had detected a breach of the speed limit and issue a Traffic Offence Notice (TON).

It was a pretty ordinary job, but occasionally we'd get to chat with lovely young women, arrest drink drivers and people who abused us, and occasionally have a laugh at someone else's expense.

We worked with one sergeant who, on evening shifts, always brought a briefcase with him. He said it was his paperwork, but it weighed a tonne on the rare occasions we could actually pick it up - he was very defensive of his briefcase. Inside were three or four bottles of beer - 750 ml bottles.

While we wrote out TONs, he'd be sitting in the dark drinking beer.

Every few shifts, we'd see a vehicle approaching that was obviously doing well over the speed limit and we'd hear nothing on our audio. We'd press our audio button and ask, "Are you there serge?" No answer.

We'd leave it for a few minutes thinking our colleague may have taken a walk to urinate. We'd call again. Still no answer.

One of us would walk the 300 m back to the sergeant only to find him asleep with no evidence of the empty beer bottles which he would have thrown into the scrub. We'd wake him up and get back to work until he told us to pack up.

One day we tied a log to the audio cable after we'd told the sergeant on audio to wind in the cable. He wasn't impressed at having dragged a large log 300 m, but eventually saw the funny side.

Another day one of our teams tied a stray dog to the cable. It was pretty unhappy by the time it had been pulled 300 m by a force it didn't quite understand and then had to confront a pissed-off sergeant. 

When we worked one Christmas Day the serge told us he didn't want to write too many tickets just concentrate on really fast speeding. "After all, it was Christmas", he said.

There was very little traffic about, but one driver we had to pull up - 25 km over the speed limit. The sergeant told us to ask him hadn't he seen the radar set and give him a ticket for 10 km over which was less expensive. So we did that.

When we reported to the sergeant that he'd not seen the Marconi, the sergeant pulled it closer to the edge of the road. As expected, we never got to write another ticket for the day.

His strategy of kindness at Christmas worked well.

Next edition - lending a hand.

Robin