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Seller information alpatrac The early units detected S-Band radar operating at 2. Advanced embedding details, examples, and help! There are no reviews yet. Our Return Policy:. There are 1 items available. The Radar Sentry seems to have been produced for a number of years, at least into the early 70's.
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This detector was the Radar Sentry, made by Radatron, Inc.
- Trying to work out what it was left more questions then answers.
This detector was the Radar Sentry, made by Radatron, Inc. It was featured on the cover of the September, issue of Popular Electronics: According to Popular Electronics, the Sentry might not have been the first detector available, however, it was definitely the most functional and practical, and probably the first one worth noting.
In the article it says that in the 5 years since the "Truth About Radar" article: "many microwave detectors have come and gone. Popular electronics has investigated each new speed-trap detector and has rejected some because they violated government regulations; others because of size, weight, or impractical construction; and one or two because they were simply 'wishful thinking'.
The early units detected S-Band radar operating at 2. Later units were adopted to detect both S-Band and X-band radar.
The Sentry was actually cordless, running off of 2 AA batteries. According to Radatron, they should last Hours, equating to 35, miles of driving assuming an average speed of 35 MPH! For mounting, it was recommended that Sentry be clipped to the sun visor. According to tests done by Popular Electronics, the Sentry would warn the motorist to feet away from an operating "speed meter".
In the article, they had this to say: "At high speeds Radar Sentry is almost useless; there just isn't time to slow down before police radar has tracked the car's telltale blip.
But at speeds in the lower 60s, the gadget is a fairly faithful watch-bird within ft. Radar Sentries are being turned out at a clip of to a day by Radatron, Inc. The units were later banned in Virginia too. Radatron filed for a patent on their device on August 3rd, The patent was granted on June 18, Patent 3,, - Microwave Signal Checker for Continuous Wave Radiations You can view the patent HERE The patent actually references the detector design in the January CQ article, so it is a good possibility that the Sentry is loosely based on it, with some improvements.
The two schematics have some similarities. Interestingly, on page 12 of the patent, it also outlines a system that "makes it possible for the policeman to know when an approaching car is detecting his signal". An early concept of an RDD? Later versions of the detector that came in kit form, and were called the Driver Alert.
The Radar Sentry seems to have been produced for a number of years, at least into the early 70's. They had this to say about the Sentry: "We made almost a dozen runs at the gun, first with one detector on, then the other, then both, and came to the following conclusions: The Snooper the expensive model gave a loud and clear warning a full quarter-mile before the gun could get a reading, while the Radar Sentry gives a very weak and almost imperceptible signal about a tenth of a mile before the police get a reading.
Unfollow vintage radar detector to stop getting updates on your eBay Feed. He got the cushy job dealing with ordering and storing the parts and I became one of the senior installers. Passenger […]. Item Location see all Item Location. Last night I was wide awake incapable of sleep far later than I should have been. Radar Sentry was different from anything else on the market at the time. You have a real piece of history…….
Radar sentry detector vintage. Вы находитесь здесь
The Siren is volts at 2amps according to the documentation and puts out DB. Last night I was wide awake incapable of sleep far later than I should have been. Michelle went to bed and I […]. Passenger […]. In this episode we have, Maddex recording some videos, Roxi setting off a glitter bomb in the lab, some guy riding a […]. Around the MCE […]. Started by business with Radar Sentry……. The system worked, but was not very stable. Therefore, it was a lot of work, and the future was short.
You have a real piece of history……. Wow, what a find. They moved to a larger facility just off of Magnolia and south of Pacific Coast Highway. My friend Steve and I got hired based mostly on the fact we were both Ham radio operators and thus were familiar with the electronics of the units. He got the cushy job dealing with ordering and storing the parts and I became one of the senior installers.
Radar Sentry was different from anything else on the market at the time. The engineer that developed the product had been working on creating solid state power supplies for US Navy submarines. I installed the systems for car lots, warehouses, parking lots and businesses with lots of footage to protect. When I left, the company was in the process of bidding on protecting the shoreline in front of the San Onofre Nuclear facility.
For large facilities we would mount an antenna vertically on a pole and seal it in a special cone to protect it from the elements. The lines would go back to a control box that once activated would set-up a standing wave from each antenna.
When someone walked into the field they would alter the capacitance and set-off the alarm or trigger a dialer. Great concept but way too many false alarms. Steve and I went back to school after four months and we never did know if they had worked out the problems.
I ran across a guy I used to work with there and he said they found that by simply doubling the frequency they pretty much stopped all the false alarms. Your find is a product that did not exist when I worked for them.
It makes sense and some good marketing on their part. Lot more consumers out there then businesses needing to protect massive areas of open space. Skip to main content. Refine more Format Format.
Items in search results. Search refinements Categories. Automotive Collectibles Advertising Militaria 1. Historical Memorabilia 1. Transportation 1. Paper 1. Consumer Electronics Vintage Electronics 3. Radio Communication 1. Antiques 1. Format see all Format. All Listings filter applied. Buy It Now. Condition see all Condition. New Used Not Specified 9.
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