Junk filtering tests

[jwardell]

How about doing some tests to see how well various detectors filter out false signals like Cobras? I was just driving earlier today and noticed how my older Bel 980 responded to a nearby Cobra, and wondered how others would handle the same situation. Basically power up a known source of interference and drive towards it, noting any signals. Perhaps also include a real gun nearby and make sure one is ignored while the other is alerted to.

And if we could duplicate an infinity speed system for example, similar tests on the laser detection side of things would also be interesting.

[jimbonzzz]

That might be interesting, I remember some of the magazines used to do something like this...

[jerry540i]

That might be interesting, I remember some of the magazines used to do something like this...

Car and Driver tests from the 80's and 90's.

J/

[Ovencleaner]

The Pro 78 is a top performer at filtering. With POP Off and Filter 2, wouldn't surprise me if it filtered just as well as a V1.

But I say bring on the tests!

[MEM-TEK]

Some Cobra models present especially nasty problems for any RD to filter out. For example, a couple of weeks ago I was headed to town and I decided to use my STi that particular day. As I approached the local highway and local corner store near where I live, I got a 35.5Ka band alert. I thought, "Cool! I am gonna follow that GSP and do some range tests." I drove closer to the corner store and noticed a pickup truck pulling out and heading up the highway. The 35.5 signal disappeared, yet I did notice the familiar shape of a Cobra RD model stuck on the truck's windshield. I could also tell, due to the small size of the Cobra, that it likely was one of the cheap models sold at my local Walmart. I quickly turned left, instead of right to go to town, and followed the truck for about a mile or so. Here I was driving roughly 1500 feet behind the pickup truck and my STi was generating a continuous alert which varied between signal strength 1 and 3. There were no other vehicles on the road. I backed off from the pickup truck to around 3000 feet and the signal disappeared. So, there you have it! Not even Bel's top-of-the-line RD model is immune to getting falses from a cheap Cobra RD model! And yet the STi might have filtered it out if this Cobra RD has been in a vehicle which was approaching me since then the STi would have been able to see the Cobra's full set of LO emissions and realized that the 35.5 signal was a false.

So, after this experience, I too would like to see GOL perform some RD filtering tests. And after this experience I realize that such tests would have to include both approach tests as well as trailing tests as well.

[ghz1]

Yes. You can see that VR are pushing the Ka sensitivity to the point where the Ka guard has to work well. This would be a very important test imo. The fact that got me off side with bell detectors was that the RX65 and the 990 int had very very very poor Ka filtering which made the Bell detector way to chatty on Ka and really turn me off bell. When i first started running my V1 .813 the Ka guard was stellar which in turn made New Zealand's very first Zombie.
This is IMO a Big sales point and with more education to the masses you never know the whole of the USA if not the world will become V1 Zombies.

[jdong]

Yeah, the V1 may be "chatty" but it certainly is not false-prone.... In fact I've only had once or twice of all my time with my V1 where it alerted to a non-radar source. My Whistler 1793SE and Cobra XRS-9400 talked a LOT less on Ka band, but falsed a lot more. When you see that Ka light come on with the V1, you KNOW you're in for trouble.


The V1 is just simply waaaaay too sensitive on X and K bands, particularly off axis. Using 4-dot big-L is not actually all that absurd, as I've found that the V1 at 4 dots of X or K is just about the strength at which other detectors START alerting anyway!

[thestaton]

Interesting... Wonder how we could do this and keep it consistent?

[Rottman]

The Pro 78 is a top performer at filtering. With POP Off and Filter 2, wouldn't surprise me if it filtered just as well as a V1.

But I say bring on the tests!

You rarely hear the V1 being a good filterd RD, but I agree.

[Ovencleaner]

You rarely hear the V1 being a good filterd RD, but I agree.

Its Ka guard with POP Off almost never falses is what I hear....