Did I do Something Wrong?

[aa2033]

Update: I pulled the receiver out this afternoon, got an RA number and sent it back for a new receiver. Hopefully the 2nd unit will be right.

that might of been a smart move, if it doesn't even alert to the bushnell after 5 seconds, something isn't right.

[calpalmer]

I have a brand new STi-r install (with LI as well), and in a couple hours of driving around in default band mode, it seems to me that the STi has K band "everywhere", alerting when the V1 never gets it. I have it in H mode, RDR on. Virtually all the alerts are 24.2xx, and I assume attributed to door openers etc. On two traffic radar signs, the V1 beat the STi by a big margin, with the STi not ramping at all but getting it near the signs at 7 or so.

I've had three encounters with Ka this morning, and each time STi beat V1 by a few seconds.

I need to read up more on K sources -- are there police radar in the 24.2xx, and if not can it be turned off, or do I just live with the falses if I want to monitor K?

Thanks,

Cal

PS, I should have said I haven't been on the highway much yet; maybe in the more urban area I ought to be using autoscan or citynox?

[djrams80]

Does your car have adaptive cruise control? If so, disable it and see how it goes.

[calpalmer]

My car does have ACC, but it was not engaged... so no energy emitted then, right? Do you mean total disconnect it? By the way, I should have clarified in the first post, I didn't ALWAYS have a K-alert on the STi, just most of the time. It was silent for stretches of a mile or two in rural areas but then would pick up another 24.2xx.

Cal

[djrams80]

My car does have ACC, but it was not engaged... so no energy emitted then, right? Do you mean total disconnect it? By the way, I should have clarified in the first post, I didn't ALWAYS have a K-alert on the STi, just most of the time. It was silent for stretches of a mile or two in rural areas but then would pick up another 24.2xx.

Cal

Some cars ACCs transmit constantly. I'm not sure if that is the case for the BMWs or not. 24.2xx is the exact reading I get from the Mercedes ACCs.

[calpalmer]

Thanks, maybe I'll take a look to see if there is something I can disconnect. All of these damned circuits are ECU monitored it seems, so it'll be a problem.

I still think it's the STi sensitivity, rather than ACC, because as I mentioned maybe 10% of the time I had no signal of any kind ...

Cal

[calpalmer]

I spent a little more time in the car today, trying to decipher the STi's K alerts, at 24.2xx. It's definitely not the ACC. First, it alerts whether ACC is active or not. Second, it doesn't correlate to any reflections back from other vehicles, buildings, etc. Most importantly, though: I had several occasions in the rural area of our region where I had no alerts, and I even tracked closely behind a delivery van with the ACC locked on him, and had no alerts. But overall, in the hour loop I drove I was probably 75% of the time in a built-up environment, and most of that time I had some kind of K alert going. Way more than the V1 reported.

I'll keep watching it to see if I can figure anything else out about it.


Cal

[EscortRadar]

cal,

I think the BMW ACC system is always on to pre-load the brakes in what it determines as an emergency situation. BMW has some info here, this phrase sounds like it is always on "Radar sensors at the front of the vehicle permanently scan the road ahead." BMW has two forms of this technology: ACC, and ACC w/stop and go.

The Hella LIDAR based ACC system used in the Chrysler 300C is reportedly always-on.

The V1 is mostly shielded from the ACC radar due to it's location in the cabin while the STi-R's receiver is probably mounted very close to the ACC unit and not as shielded.

[calpalmer]

I'll check the link out. I suspected it may be always on, but how would my alerts be explained by ACC, when I have periods (sometimes short, sometimes long ones) with no alert registered at all. If this K issue was interference from the ACC I'd always have it (I would think).
Cal

[thx1138]

Replacement head got here today..re-installing now.