JBV1 and TMF2 On vs. TMF2 Off

barry

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I’ve been playing with BSM settings in v1.5.13 and after not seeing many BSM alerts (I have BSM alerts showing in the Priority Alert Display) tried turning off TMF2, or whatever VR is calling it now, hoping to force a few BSM hits just for testing. I’ve now tried TMF2 off a few times and have been surprised by the difference.

Yesterday, I tried to do a fairly consistent comparison by driving a local three-mile route with TMF2 on and then immediately redriving the route with TMF2 off. (Silent Ride turned off.) The route went down a fairly busy section of a city road that’s lined with businesses, then around a local police department (always a source for C/O 34.7), and then back up the road to a parking lot. The loop took about eight minutes to drive.

With TMF2 on I saw one legitimate alert, a 34.7 hit at the police station, and 5 locked-out stationary falses. (See the first screenshot.)

The same drive with TMF2 off was almost unbearable. (See the second screen shot.) Within seconds of turning onto the road I heard “Dee-Dee-K-band, Dee-Dee-K-band, Dee-Dee-K-band, Dee-Dee-K-band” in rapid succession. For the loop I picked up 24 K-band alerts. There were now two 34.7 alerts, but the one at 10:13:05 was from a LEO vehicle coming up the road toward me running C/O. He made a U-turn before reaching me. There were now 13 lockouts instead of five. But I believe some of these, maybe all, were newly learned on this loop because I had driven by a couple of times previously with TMF2 off.

So, here are a few observations and questions.
  • It was torture to drive in a city with TMF2 off. Maybe things would improve over time as the additional K falses are locked out, but I don’t have any desire to find out.
  • I have GM BSM filtering on in JBV1, but I’m pretty sure that with TMF2 off I was hearing a bogey-lock tone when the first (and maybe even the second) GM BSM frequency was detected. This almost never occurs when TMF2 is on. Does TMF2 in the V1 wait a bit when it detects either GM BSM frequency to see if there is going to be a pair?
  • I assume the K-band alerts along the route that were above 24.230 GHz were from door openers. Why do I see these alerts with TMF2 off when they never showed before? Does TMF2 in the V1 preferentially filter higher K-band frequencies or possibly lower sensitivity to K-band from the side?
By the way, my V1 is version 3.8945 and all alerts are coming through my Samsung S7 phone speaker. No sounds from the V1.

Moderator, if you feel this thread should be in the V1 section instead of the JBV1 section please feel free to move it.

TMF2 On.jpg

TMF2 Off.jpg
 

johnboy00

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The "GM BSM" filter is a JBV1-only filter. It doesn't change anything on V1 and isn't affected by your TMF setting. If you heard bogey-lock tones for all K-band signals when you disabled TMF, then perhaps you also disabled V1's native K muting.
 

barry

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The "GM BSM" filter is a JBV1-only filter. It doesn't change anything on V1 and isn't affected by your TMF setting. If you heard bogey-lock tones for all K-band signals when you disabled TMF, then perhaps you also disabled V1's native K muting.
Thanks for your response johnboy00.
I'm not using native K muting, but, looked back through my settings and may have found something. I made a modified Profile by taking my normal one and unchecking the box for "TMF + Junk K-Fighter". What I didn't notice was that this change had also turned K-POP on. Maybe that's why I got so many new alerts.

I'll go do another run with K-POP off and see what happens.
 

BlueV1

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Barry, have you seen this thread?

I haven't had the time yet to fully digest what all you are saying so I'm not going to comment other than to say that the Profile settings and associated Custom Sweeps screens in JBV1 are the only settings stored in the V1. Everything else is handled by JBV1 itself. That might help as you try to get familiar with it all. :)
 

barry

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The "GM BSM" filter is a JBV1-only filter. It doesn't change anything on V1 and isn't affected by your TMF setting. If you heard bogey-lock tones for all K-band signals when you disabled TMF, then perhaps you also disabled V1's native K muting.
I did a poor job trying to describe what I’m seeing/hearing so let me try again.

When I drive a specific city loop with TMF2 turned on in the V1, I get only a few K-band indications. Almost all of these K-alerts are already locked out by JBV1 so they are muted. I often see no BSM alerts even though there are numerous cars around with BSM.

If I disable TMF2 and drive the same loop, I get a huge number (up to 80 sometimes) of K-band alerts. Most of these K alerts appear to be coming from store fronts. However, a substantial number are BSM alerts. The GM BSM alerts are all muted by JBV1. I don’t currently have the Honda BSM alerts muted by JBV1.

The point I was (poorly) trying to make is that with TMF2 on, the V1, all by itself, appears to be doing a pretty good job muting both store front alerts and BMS alerts. Of course, if a GM BSM gets through then JBV1 takes care of it.

Does anyone know what TMF2 is actually doing? It seems clear there is a reduction in alerts from the side as this would partially handle store fronts and BSM. However, is anything else like signal pairing going on in TMF2 as well?

Barry, have you seen this thread?

I haven't had the time yet to fully digest what all you are saying so I'm not going to comment other than to say that the Profile settings and associated Custom Sweeps screens in JBV1 are the only settings stored in the V1. Everything else is handled by JBV1 itself. That might help as you try to get familiar with it all. :)
Thanks for the link BlueV1, sorry I initially missed it. Yes, that's pretty much the behavior I'm seeing too. There's a big reduction in BSM alerts with TMF2 active. However, I wasn't expecting TMF2 to also dramatically reduce the number of K alerts from store fronts. I guess I just didn't understand what all TMF2 was doing. Obviously, TMF2 is doing a pretty good job.
 

GTO_04

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IME, having TMF2 enabled definitely reduces alerts from store fronts/door sensors etc. Is it looking for paired signals? Possibly, but we can only speculate. Only VR knows for sure.

GTO_04
 

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