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maccapakka

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ahh gotcha. so you think sticking to a NZ DFR7 would be better than bringing one in (aside from the cost savings)? will DFR7 go down that low on K band?
 

Mithheru

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ahh gotcha. so you think sticking to a NZ DFR7 would be better than bringing one in (aside from the cost savings)? will DFR7 go down that low on K band?
Not quite sure we're talking about the same thing...

I have tested different detectors and setup:

So far the R7 is definitely superior to the DFR7 (NZ or US). This is because the R7 combines excellent redflex detection and massive Ka band detection.

The US DFR7 I tested was able to detect low frequency K band redflex. However, I never used Ka band detection on the DFR7. [This is because in my tests I wanted to see if I could run two detectors together. I was very successfully demonstrating a combo with the R3 and DFR7. So the R3 was giving massive Ka band detection similtaneous with good redflex detection through a US DFR7. - see my earlier videos on this thread]

However, the DFR7 at its current price on ebay/amazon is a fantastic detector, and can be installed with my updated NZ gps database. The DFR7 NZ does have better firmware than one from the US. However, would I pay the massive overprice on the DFR7NZ just for that firmware? No, not a chance.

=> My recommendation for a Uniden to run here is either an R7 or a DFR7, where you choose to buy it from is up to you.
 

LouG

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This footage is captured using a US R7, not a DFR7. Had I had a bit more time, I would have liked to compare redflex detection range against the R7 and DFR7. I had the DFR7 with me at the time, just needed to get back home. Redflex is still tough. This instance possibly got better range because the approach on the road bends through the radar beam at distance where it was first detected. However, the R7 does keep hold of the signal so, still looks like a strong detection. This run really would have been the ultimate site comparison to compare different detectors against redflex. No other radar interference; and not too much traffic so I rule out 'lucky' reflections between one run and another.

This signal was also low K band at about 24.034 so completely undetectable with the R3!
-- Double Post Merged: --


I have had two very useful Ka band detections on the vertical mount R7. My gut feeling is my vertical mount is possibly not quite as good a range as my previous standard mount R3. However, its still pretty close, and more than adequate. I had a good instance yesterday, just haven't downloaded the footage from the camera.

Basically in a built up area, I was on the approach to turn right in the dark when I got a 'front' alert. I decided to wait at the junction, sure enough about a minute later the police car came around the corner. So I really am loving the R7 so far.

My only criticism is to find a better vertical mount. First one I made from Aluminium, and works well but the suction cup ends up above the detector and takes up too much space cutting down visibility. Currently I am using a wizgear magnetic mount. This is quite a large mount that goes on the side. However, the metal plate now keeps coming unstuck from the R7. So either need to find better adhesive, or make another metal mount to clip into the R7 and sticks to the windscreen from the far side of the detector to give maximum visibility.
I got some extra strength 3M double sided tape from Mitre 10. It's the black stuff, not the grey.
 

maccapakka

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fantastic. ill start the search on amazon.
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fantastic. ill start the search on amazon.
looks like i can get a DRF7 landed for NZ$300! wohoo! is it difficult to install your GPS database? Really appreciate your advice and help
 
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UncleArthur

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Not quite sure we're talking about the same thing...

I have tested different detectors and setup:

So far the R7 is definitely superior to the DFR7 (NZ or US). This is because the R7 combines excellent redflex detection and massive Ka band detection.

The US DFR7 I tested was able to detect low frequency K band redflex. However, I never used Ka band detection on the DFR7. [This is because in my tests I wanted to see if I could run two detectors together. I was very successfully demonstrating a combo with the R3 and DFR7. So the R3 was giving massive Ka band detection similtaneous with good redflex detection through a US DFR7. - see my earlier videos on this thread]

However, the DFR7 at its current price on ebay/amazon is a fantastic detector, and can be installed with my updated NZ gps database. The DFR7 NZ does have better firmware than one from the US. However, would I pay the massive overprice on the DFR7NZ just for that firmware? No, not a chance.

=> My recommendation for a Uniden to run here is either an R7 or a DFR7, where you choose to buy it from is up to you.
For the benefit of others I am running a US DFR7 up here in the Waikato. I haven't done enough driving since I got it, and as such haven't actually come across a redflex van yet.
That said, I have had a false on 24.03 so that suggests it can go lower than the published 24.05 specification.

Re Ka, I get fantastic warning on Ka, the DFR7 gives me ample warning (even over the brow of hills), on a straight I would estimate I can get 2km of warning (or more) of an oncoming police car broadcasting Ka band.

I have tested against reflex fixed camera's also, I probably get ~300m warning approaching the camera from the front. From the back however, it's lucky to give any warning, so you have to talk nicely with Mithheru about giving you a US compatible copy of the NZ GPS database. :)
 

LouG

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300 metres is plenty. I might get tempted, if I can work out a place to mount one that doesn't clutter up the dash.
What's K filtering like?
 

UncleArthur

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Turning the K filtering on as far as I can tell cuts out false alerts from blindspot monitoring on other vehicles, it's fairly chatty with everything else (then again I leave it on highway mode), I use the GPS lockouts, quiet ride, and auto mute functions to make it tolerable around town (I tend to leave it in highway mode, perhaps city mode would improve it further, but that does come at the cost of sensitivity). On the open road it's fine.
 

LouG

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I'm not sure I could live with a chatty detector again. Still, it might be worth $300 to find out.
 

maccapakka

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Well I placed an order on eBay for a dfr7. Hope to see it in a week or so. I live in Auckland so it’ll be interesting to see how many falses it throws up on my commute along Hillsborough Rd compared to my 995.
 

Mithheru

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Got lucky again this weekend finding the same redflex in the same spot as last week. Managed to do comparative run with the R7 and DFR7 (both US spec). Didn't yet get chance to compare against standard mount. However, the vertical alert position on the R7 is looking very good and is consistent with last week.
 

dudeinnz

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That is very good detection for redflex!

What is that dude in the hi-vis doing? at 0:53
 

Mithheru

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What is that dude in the hi-vis doing? at 0:53
?? Yes, I have no idea. Here is a better snapshot:

RedflexMan.jpg

-- Double Post Merged: --
Here are the exact camera frames where the alerts are first recorded (captured at 30 fps) (bottom one is for the DFR7).

R7Capture.jpg
DFR7Capture.jpg

-- Double Post Merged: --
Front and rear Ka band also looking strong on the R7.

Here's a nice example of Front Ka band detection:
-- Double Post Merged: --
Front and rear Ka band also looking strong on the R7.

Here's a nice example of Front Ka band detection:

Sorry, seem to be having trouble with some of the videos. Perhaps a bit big. I'll try again:
 
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KiwiBloke

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?? Yes, I have no idea. Here is a better snapshot:
Good detection by the R7.

It looks like you went past as he was still getting set up. They do a calibration procedure (and alignment too, I guess) every time they set up. I imagine there are tuning forks integrated into that board, at a guess they have to take a photo of it each time they set up to make sure it reads the speed correctly / records the cal details.
 

Mithheru

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I found a report of someone getting a false alert on their R1 at 24.020 after upgrading to the 1.50 firmware. Has anyone in NZ turned on the K band since upgrading to 1.50 on their R3? If this turns out to be correct, it is possible that the new firmware on the R3 now has redflex capability!?
 

shadow69

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ive run my r3 on k band on 1.50 and only noticed a reduction in k band sensitivity against fixed redflex that i drive by every day. not encountered any vans yet.

thinking of turning k band off again due to number or k falses and getting sick of having to mute memory everywhere i drive.

will buy an r7 as soon as they announce autolockouts or b4 the compulsory gst/duty kicks in but not holding my breath.
 

UncleArthur

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Does City mode make much difference? From what I read city mode reduces the sensitiviity of K band, but leaves Ka alone? Can anyone confirm this (incl for DFR7?) Thanks
 

Mithheru

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Does City mode make much difference? From what I read city mode reduces the sensitiviity of K band, but leaves Ka alone? Can anyone confirm this (incl for DFR7?) Thanks
Problem is, you need maximum sensitivity against mobile redflex.

thinking of turning k band off again due to number or k falses and getting sick of having to mute memory everywhere i drive.
FYI: Running the R7 on US firmware with the K band filter on and after applying manual gps lockouts, is pretty quiet. I'm noticing about 75% of all the false alerts would fall within K1 segment of the R7 NZ anyway. Therefore the R7 NZ in my opinion is not worth the extra money. I also now really like knowing whether the Ka band alert is in front or behind. This extra information can make a real difference as to how you handle the situation.

I'm also looking forward to my next long distance trip with the R7 on board. My current record for a distance alert was about 9-10 miles range for Ka band on the desert road in my Smart roadster (speedo and distance still in mph) and with an original redline on-board. Couldn't believe I was driving so slow for sooo long. I'd love to see one day if the R7 gives a similar circumstance and type alert.

On an aside note, I'm also wondering whether altitude / pressure can affect range. I suspect lower air pressure would give slight increase in range, e.g. relative to sea level? Any thoughts?
 

maccapakka

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View attachment 128648

Got lucky again this weekend finding the same redflex in the same spot as last week. Managed to do comparative run with the R7 and DFR7 (both US spec). Didn't yet get chance to compare against standard mount. However, the vertical alert position on the R7 is looking very good and is consistent with last week.
Awesome. Couldn’t quite believe how much advanced warning the R7 give vs the DFR7, but I guess you’d hope so for the extra $$.
 

UncleArthur

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Awesome. Couldn’t quite believe how much advanced warning the R7 give vs the DFR7, but I guess you’d hope so for the extra $$.
Agree, it was impressive, although at 4x the price (Amazon pricing) , you'd hope so.

Actually, I'm just impressed they picked it up at all, 24.034 is outside of the published frequency range of either detector.
 
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LouG

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Problem is, you need maximum sensitivity against mobile redflex.



FYI: Running the R7 on US firmware with the K band filter on and after applying manual gps lockouts, is pretty quiet. I'm noticing about 75% of all the false alerts would fall within K1 segment of the R7 NZ anyway. Therefore the R7 NZ in my opinion is not worth the extra money. I also now really like knowing whether the Ka band alert is in front or behind. This extra information can make a real difference as to how you handle the situation.

I'm also looking forward to my next long distance trip with the R7 on board. My current record for a distance alert was about 9-10 miles range for Ka band on the desert road in my Smart roadster (speedo and distance still in mph) and with an original redline on-board. Couldn't believe I was driving so slow for sooo long. I'd love to see one day if the R7 gives a similar circumstance and type alert.

On an aside note, I'm also wondering whether altitude / pressure can affect range. I suspect lower air pressure would give slight increase in range, e.g. relative to sea level? Any thoughts?
This why why I don't value ultra long range so much. Two or three of those will really drop your trip average.
Altitude relative to the target does give a lot more range. It's why military uses require the antenna to be as high as possible. AWACS is an extreme example.
I'm not sure that atmospheric pressure makes a difference, but humidity might.
 

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