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-   -   K40 Problems (https://www.speedtraphunter.net/radar-detectors/1309-k40-problems.html)

Tomlinson 2009-04-10 16:53

Question from new member
Hello. Question: I have an older K 40 system on my 2006 Lexus LS 430 , and the K 40 people agree it's not functioning perfectly. Rather than replace whole system is it practical to use a new Valentine 1 or Escort in concert with the K 40 system? Or would the two units conflict? (I just ordered Veil from the Radar Ron page). Randy W.

Veil Guy 2009-04-10 18:34

K40 and Other Radar Detector Interference Potential

Welcome to our friendly forum!

I suppose that depends on the nature of your particular circumstance.

I would tend to be more concerned about the K40 model potentially interfering with your Valentine 1 or your Escort than the other way around, however, since your K40 model is externally mounted, less so.

Something to consider when running more the one radar detector concurrently beyond the potential of cross-talk, which is easy to spot on one detector (or both) [with] potentially frequent alerting to (Ka or K) radar is a more ominous result of interference, silence.

It is possible for one or both radar detectors to become less sensitive or responsive to a bonafide external radar source at certain times.

Over the years, I have occasionally performed comparisons with more the radar detector, but only after I had become very familiar with the alerting behavior of each and mutual compatibility over long periods of time.

In so far as laser detection/sensitivity, you should be fine in any instance.

In general, I would say go ahead, but be cautious and aware of the above issues before putting your entire trust into such a configuration.

If repair is not an option, you may want to consider another remote from either Beltronics (in the form of the Beltronics STi-R) or the Escort Passport 9500ci (which also provides GPS photo enforcement protection and laser jamming).

These options are certainly more expensive than a standard windshield radar detector, however they are in-line (if not less expensive) with the likes of any K40 remote installed detector (K40 Calibre) and will certainly provide far higher levels of performance (K40 Calibre Review) and unlike the inaccurate and often repeated marketing claim of an "undetectable" K40, the Beltronics STi-R (like the Beltronics STi Driver) and the Passport 9500ci, are truly undetectable by Spectre RDDs. Of course, like any discreetly mounted radar detector, it may be hard visually see, but that is not the same as being undetectable. Only Beltronics and Escort can legitimately make that claim.

For such a nice vehicle, that may be something to consider. My understanding from a number of K40 installers is that K40's BlueTooth models aren't easier or simpler to install than conventional "wired" ones and have created interference with certain factory in-car electronics. BMW released a technical service bulletin detailing interference issues, recommending removal of the K40 Calibre/disabling of the conflicting K40 Calibre transmitters.

BTW, what issue(s) are you experiencing with your K40 model? (If, of course, your radar antenna is "dead" [as mine was] and is no longer receiving or xmitting [sweeping] an LO the concern about potential cross-interference is probably a moot point).

PS: For what it's worth, I too once owned an older K40 (K40 SS3000) externally mounted radar/laser detector on my vehicle until it failed as well (I replaced it with a 9500ci and STi-R), but for a brief time I ran a Valentine 1, and the V1 appeared unphased.

Hope this information is helpful to you...

Veil Guy :driver:

Tomlinson 2009-04-10 23:54

Very informative
I think joining this forum was a very fortunate choice. I learned more from your reply than I've learned in a week discussing radar detectors with K 40 management, my Lexus dealership, and also the local K 40 and Escort retailer installers (Cartunes; Ft. Myers Fl..) The issue with my K 40 was simple: very late warnings (even with stationary school-zone type radars). Despite conversations with the K 40 factory, I had decided to replace the K 40 in my Lexus LS430 with the ci Escort version but the local installers postponed my appointment twice. I'd decided to cancel until I received your email -- it was reassuring to read that, in your opinion, the Escort is much better. I have an older model V1, which I've given to my son, but I ordered a new one today . . . but maybe I'll go ahead and have the Escort ci installed, and try to use the new V1 in concert. I had the Veil treatment overnighted, so I will apply it on Monday, 3-13-09. This is important to me because I often use unusually effective products in my books. Thanks. Randy W

Veil Guy 2009-04-11 08:09

K40 Late to Alert to Radar Sources
We're pleased to have you and thanks!

Of the experiences and knowledge that I have had with K40 radar detectors, the K40 RD850 provided adequate warning times in most cases to radar threats, even though it suffered from rudimentary controls and settings and had awful and nearly indistinguishable alert tones (it was based on an earlier generation Beltronics model)—as compared to the Beltronics Pro RX65/Passport 8500 X50 radar detectors which were the current models/platform at the time.

While I never managed a speeding ticket with my K40 SS3000 remote installed radar detector during the time it was installed in one of my personal vehicles, its performance was easily exceeded by a host of windshield-mount radar detectors, of the day, radar detectors costing considerably less--detectors like the Valentine V1, Beltronics Pro RX-65, Escort 8500 X50 as well as a host of Whistler models.

Given the [high] relative cost of newly installed K40 remotes and with the level of vehicles that are targeted (ie; Audi, BMW, Mercedes, Porsche, etc.) I expected much more in terms of sheer performance. I once got some insight into this [price vs. performance disparity] by a car dealer/installer: they informed me that their margins were nearly 100%! At those lofty levels, it doesn't surprise me that the dealers/installers you have dealt with have been less than "illuminating," shall we say, as their sales margins were so high. I ran into the same sort of "ignorance" myself.

It is my understanding that Beltronics no longer provides their earlier generation (ie; lower performing) electronics to K40 and that K40 may now be sourcing their current materials from a Korean electronics manufacturer (Attowave). Given the performance history of [some] of Attowave's models, I'd be cautious.

We were intending to create a discussion forum for K40 (as there are no legitimate open discussions online) to assist other owners with K40 related real-world experiences and even invited K40 to participate, but they declined and instead requested STH not to create a K40 forum.

With respect to your new Valentine 1, The levels of performance of that radar detector are stunning, however you may find its frequent alerting to stationery door openers while driving on Rt 41 or the many cross-streets surrounding Ft Myers becomes very tiring (not really the fault of the V1).

I suspect a Passport 9500ci would be a very fine addition to your vehicle as Florida has plenty of Ka, police laser, and a growing number of photo enforcement systems (like in Orlando). Your 9500ci will provide "obscene" levels of performance relative to your K40 on radar reception, can auto-learn and auto lock-out the many sources of X and K alerts you would otherwise experience around town; provide speed-sensitive sensitivity; provide decent laser detection/jamming (especially when paired with Veil G4); will alert to red light cameras; and result in an extremely high-quality integration into your automobile (provided you select a quality installer, of course) which may enhance the re-sell value of your vehicle.

My suggestion would be to reschedule once more and get the Escort Passport 9500ci. As an all-in-one integrated solution, nothing else (and I mean nothing else) compares!

Trust me, you won't be disappointed!

If your Lexus dealer can't/wont do it in a timely fashion, you could use the following installer/dealer locator to find one that will: Passport 9500ci, Passport SRX, Passport SR7 & Laser Shifter ZR4 - Dealer Locator

It's very important to select a competent installer, one not only familiar with high-end electronics installation, but one who is intimately familiar with the particular make and model of your automobile.

Here are some related videos including one produced by Escort during one of my visits.

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Parts I-IV: Professional Installation of Escort Passport 9500ci

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Speed Trap Hunter Visits Escort to Discuss His 9500ci Install

Veil Guy :driver:

PS: Be sure to post some PICs of your install and share your experiences afterwords, please. BTW, if you continue to encounter installation "delays" from your Escort installer, you may want to communicate with Escort, they participate on this forum as the user RadarExperts and I am sure they would help you overcome your installation "issues."

Craig 2009-04-11 17:20


If your LS430 is equipped with the adaptive cruise control, keep in mind that its distance-measuring front laser will cause high-performance detectors like the 9500ci to alert. And since that Escort comes with laser jammers, it will begin transmitting an interfering signal in response. There's no harm done, but the unique, rarely-heard laser shifter warning is enough to scare the wee out of you.

Having logged 30-odd thousand miles with the 9500ci, I can attest to the fact that you'll experience occasional laser false alarms even without the cruise control powered-up. With it powered-up, even when a speed hasn't been set and the unit's on standby, its laser is still active, leading to continual laser false alarms.

But that's a small price to pay for the world's best custom-installed remote.


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