RMR C-475 Radar Detector Scrambler Review
“I’ll pay anyone $50,000 to anyone that can show me one of these devices that works as the manufacture Rocky Mountain Radar advertises! RMR and it’s president Michael Churchman are just plain old scam artists that are out to steal your money.” – Radar Roy December 2013

RMR C-475 Radar Detector Scrambler Review: Updated: 12/2013
The first question a speedy driver asks is how to stay protected from tickets. A good radar detector and laser jammer are two great products to own, but some drivers want more. Rocky Mountain Radar has claimed to have combined both radar detector and laser jammer into one small windshield mounted unit and also included their exclusive “Radar Scrambler”.
This is a great concept, except for the fact that the claims of Rocky Mountain Radar are totally false and misleading.
Before even getting into the details of RMR’s faulty products, one basic fact needs to be addressed. Radar jamming is illegal. The Federal laws prohibiting a radar jamming device are quite strict. The penalties behind such action are not like a traffic ticket or even shoplifting. Owning and using a radar jammer is a Felony in the United States. This could land the user in federal prison for up to ten years, as well as a ten thousand dollar fine. Is the risk of a three hundred dollar speeding ticket really worth risking jail time and a huge fine? Most logical thinkers would agree and stay away.
Needles to say, RMR has sold thousands of these devices which, if actually worked as claimed, would be federal crimes.
The most popular Rocky Mountain Radar Detector and “Scrambler” combination is the RMR-C475. This device is claimed to detect radar and laser as well as jam, or as RMR named it, “scrambles” the radar and laser.
A good point to the RMR-C475 is that it does detect radar. However, the range and sensitivity is extremely poor compared to mainstream products such as Escort and Valentine radar detectors. The laser detection is also extremely poor compared to all other detectors. The company claims to have developed technology in order to filter out all false alarms, but the fact of the matter is the detection is so poor it simply will not detect other radar sources.
The claim of the “scrambler” is when an officer is using either radar or laser, the C475 will passively confuse the speed measurement device and the outcome will be no speed reading. Unfortunately, this couldn’t be farther from the truth. Every independent test has yielded the same results- instant and accurate speed reading. The RMR-C475 has no affect on either radar or laser. The small window mounted unit simply lacks any and all hardware necessary for jamming speed measurement equipment.
Many attempts have been made to jam radar. Some have been successful, others have not. One of the most famous radar jammers is known as the Scorpion Radar Cloaking Device or RCD for short. This device only jammed analog X and K band. At the time, the device worked somewhat well, but was very expensive, bulky, and prone to fall out of tune.
When a rocky mountain scrambler is taken apart, there is not a single piece of electronic hardware capable of jamming a radar gun. It is basically just a small radar receiver, LED alert lights, and an alert speaker. Nothing capable of living up to the claims of the manufacturer.
Overall, Rocky Mountain Radar is one of the biggest scams in the radar detector industry. Having a good radar detector and laser jammer is all a driver needs. And if you are considering buying an RMR product, try placing a brick on your dash. It will perform much better than the RMR.
To learn more about my $50,000 challenge on this and other RMR products, click here
3 Responses to “RMR C-475 Radar Detector Scrambler Review”
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JUNK…don’t waste your money!!
I’ve looked at them myself, he’s right, there is nothing inside them to transmit any”scrambling” signal, and if it did transmit, it would be from the oscillating circuit for the detector side, and at very low output, enough to be caught by the radar detector detector
Wow it amazes me that this company still exists and even selling at Nebraska Furniture Mart. I remember my father and I bought one from Sharper Image in/or around 2000. It claimed to jamr RADAR! Back then Sharper Image sold quality product so I thought this was legit. Well I took it out of the box and the first thing I noticed was how light it was. Seem like it was just an empty plastic case with lights. I even took it apart and I saw this tiny circuit board that didn’t even take up half the space inside. So I took it out for a spin and found an Indiana State trooper at his usual spot. And the radar part worked but had no clue about the jamming. It just didn’t feel right so I was able to sell it on eBay for 80% of the original price. The buyer wanted to talk to me about the unit. So he asked does it really work. All I could tell him was I never got a ticket with it. Granted I used it for 1 day and drove the speed limit the whole time. I had no faith in the unit and got it sold ASAP.