Frequency changes in STi TEC mode

[Xen0n flash]

I never owned any other RD, other than my STi so I haven't seen TEC modes on other detectors.

However what I continuously notice, mostly with X and K falses that the frequency will often change. For example, it will go from 24.174 to 24.175, 24.178, 24.180, etc. Also, when I pass a known false, sometimes it will show as 24.185, and othertimes it will show as 24.19 or 24.175. Weird.

With police radar, it will show up as say 24.147 when the signal is vague. However when I reach the source it will switch to 24.150 or 24.145 and remain there.

Is this a bug with the STi, or is it common for the frequency to change due to distance to radar source, or changes in weather, etc?

[dpatel01]

I've seen 8-10 mhz changes on my X50 against the same source, but that thing isn't very accurate, making jumps in 8mhz increments.

[MEM-TEK]

When the STi detects multiple X or K band false alert signals, its display will randomly "cycle" through the frequencies which it detects, depending on each signal's changing signal intensity. At least this is what I have observed. Older door openers tend to drift a bit with slightly varying AC line voltage when the doors open and close. The newer compact Stanley brand K band door openers tend to be very stable and to any radar detector look exactly like police radar in the sense that their frequencies are quite stable.

The STi, like all radar detectors which are capable of displaying the detected radar frequency, has a limit to how accurately it can determine the detected frequency. The STi's M3 antenna design probably has the best internal frequency resolution of any RD out there. I can't disclose how good this resolution is, but lets just say that it is quite good. So, the slightly varying displayed frequency which you see when encountering police radar is not a bug. Its just due to the STi's internal limit to how accurately it can measure the signal's exact frequency. There is a bit more to it than this, but basically this is the gist of the matter, and this is all that I am willing to say.

[jimbonzzz]

It's a radar detector, not a lab-grade freq counter.

The STi, like all radar detectors which are capable of displaying the detected radar frequency, has a limit to how accurately it can determine the detected frequency.

You could say the same thing about lab-grade freq counters too

[MEM-TEK]

Hi Professor,

Cool new avatar. So, how are you making that RX65 display "-RF-Test"?

[dpatel01]

Hi Professor,

Cool new avatar. So, how are you making that RX65 display "-RF-Test"?

X2 on the new avatar. I can think of ways to make it say Self Cal or Service Required.

[Xen0n flash]

It's a radar detector, not a lab-grade freq counter.

I know that Jim but I mainly use the frequencies to determine falses from non-falses.

[Xen0n flash]

I can't disclose how good this resolution is, but lets just say that it is quite good. So, the slightly varying displayed frequency which you see when encountering police radar is not a bug. Its just due to the STi's internal limit to how accurately it can measure the signal's exact frequency. There is a bit more to it than this, but basically this is the gist of the matter, and this is all that I am willing to say.

Don't mean to bust your balls MEM, but do you have a non-disclosure agreement with Bel or something?

[MEM-TEK]

Don't mean to bust your balls MEM, but do you have a non-disclosure agreement with Bel or something?

No, I don't, but along the way I have learned a lot of proprietary stuff about products/methods used by a variety of manufacturers. I have learned this stuff simply to satisfy my own curiosity. Yet, when I realize that something which was communicated to me obviously is or may be proprietary in nature, I make a note to myself to never disclose it to any other party. There have been times when I was talking to CS reps from whatever company and the rep mentions something while answering one of my questions. If I think that what they said might be something which the manufacturer doesn't want to be disclosed, I immediately ask whether or not it is okay for me to mention it here on the forum. Sometimes the answer is "yes", and other times the answer is "please don't". I keep my mouth shut about any proprietary information. If a competing manufacturer somehow learns the same thing, well, it sure as Hades didn't come from me.

[jimbonzzz]

Hi Professor,

Cool new avatar.

Thanks Michael!

So, how are you making that RX65 display "-RF-Test"?

I can't disclose how I was able to make the RX-65 display -RF-TEST (or what it does), but lets just say that when I do something, -RF Test- comes up on the display. That is all I am willing to say.

J/K