35.5 ka band and radar detector detection

[wilnevrbbiased]

Myself and a friend were testing 35.5 ka band (super deadly) against three different V1's, three different Bel STi's, two different X50's, and a lab test on the 9500i and the 995. The lab test was conclusive as the 9500i did well at detecting 35.5 but the Bel 995 didn't do so well. On the road test against forward facing 35.5, the V1 and STi were neck and neck followed by the X50. On rear detection against 35.5, the V1 followed the signal the best as followed by the STi and then the X50. But on 35.5 off axis detection, the Bel STi detected it first every time. Sometimes the V1 didn't detect it at all which really surprised me and this was using 3 different V1's. Don't get me wrong I like the V1, but this problem w/ off axis 35.5 needs to be brought to the attention of VR. I've called them on this and they didn't think it was a problem. Please make some phone calls to inform them of this as they obviously don't believe me. Sorry to all the Whistler folks as I didn't have a Pro 78 to test, otherwise it would have been tested.

[CJR238]

The off axis you did, was it realistic? Most tests are not real life off axis, theres almost no such thing because off axis is inaccurate for the LEO "Cosine error/effect" (his gun may show even 10mph lower than your speed).

For example if the radar gun is shooting passed 30 degrees off axis of the RD on a striate road no LEO would do this because of cosine error. However if a turn ahead in the road is 30-40 degrees this is a good test because the radar is ahead of you (not really 30-40 degrees off axis), and much more realistic.

Another example:
If theirs a LEO off axis down the road you will pick up his signal much, much farther. Even if he’s 40 degrees off axis, because he’s so far down the road when you receive his signal he's essentially only 10 degrees off axis. Because of this, detection range would be maintained for around-the-curve or over-the-hill encounters.

IMO, off axis in reality is a bit over rated. Important, but overrated.

[wilnevrbbiased]

Yes I know and the speed reading on the LEOS radar gun would go in the motorists favor. The problem is off axis 35.5 exists and I seem to see it quite frequently where I live. Right or wrong, the LEO will still perform off axis radaring.

[CJR238]

Originally Posted by wilnevrbbiased

Yes I know and the speed reading on the LEOS radar gun would go in the motorists favor. The problem is off axis 35.5 exists and I seem to see it quite frequently where I live. Right or wrong, the LEO will still perform off axis radaring.

I don’t know, I have never seen a LEO more than 30 degrees approximately and actively monitoring speed with intent to give a ticket.

I guess the question is will you get a ticket from a LEO that is getting a reading that he knows it to be wrong because he’s off axis. Say your doing 50 in a 40 and because of his off axis he’s reading 40. I would think he’s looking for that 20+ and say the driver was 20 over, but he will give a ticket for 10 over.

I find the topic of off axis very interesting, what scenarios have you come across with true off axis and actively monitoring speed with intent to give a ticket. Im in no way a V1 zombie but i don’t think the performance on 35.5 is that bad because of the extra range especially.

[wilnevrbbiased]

And I am not a V1 or BelEscort zombie, just look at my username and that should tell you. I try to mix it up as much as I can. Today I used my Bel STi for the 1st half of the trip, and my V1 for the 2nd half. I guess you never know what you will be hit with?

[CJR238]

I'm trying to build up my collection. I had a Bel9??, K40, 8500 and 3 9500I's. Next will be the new whistler and a stealth V1 if it ever happens.

[wilnevrbbiased]

Give VR some time w/ the whole Stealth V1. I have already talked w/ them about this issue and the technicians are working on it as we speak. Sounds like it will be a whole revamp of the V1. The new Whistler Pro 78 and especially this new Whistler XTR-695 look really cool. I would love to get me hands on the XTR-695, but don't know how I will fit it into my seven day schedule having the V1,STi,X50,9500i and now the "original" 8500. I already have the 995 resting peacefully at the moment.

[CJR238]

Originally Posted by wilnevrbbiased

Give VR some time w/ the whole Stealth V1. I have already talked w/ them about this issue and the technicians are working on it as we speak. Sounds like it will be a whole revamp of the V1. The new Whistler Pro 78 and especially this new Whistler XTR-695 look really cool. I would love to get me hands on the XTR-695, but don't know how I will fit it into my seven day schedule having the V1,STi,X50,9500i and now the "original" 8500. I already have the 995 resting peacefully at the moment.

We just need to add another day to our week.

[Anonymous]

Off-Axis is really interesting to me but CJR stated that it can be "Inaccurate" Speed Reading? I'm not sure what you mean by there. Could it be due to reflection coming from the side of the Car?

I don't think we have any 35.5 Guns yet here but a 34.7 which is pretty easy to detect especially with V1.

Thanks for taking your time on Test Wilnever, I always wonder how V1 performs on 35.5 Off-Axis Detection since some RD Users are complaining about it.

[CJR238]

Originally Posted by Anonymous

Off-Axis is really interesting to me but CJR stated that it can be "Inaccurate" Speed Reading? I'm not sure what you mean by there. Could it be due to reflection coming from the side of the Car?

Radar and laser will show a slower speed on there gun if the target vehicle is off axis from there position, it becomes less accurate as the angle increases. so if the LEO is shooting radar 30 degrees from your vehicle it will show 15% less than what you are really doing, and if the LEO is 50 degrees it will show 60% of your speed.
The extreme would be 90 degrees, and your speed would show 0.