Interconversion of a DFR7 US model to a DFR7 NZ

LinuxD

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Next time we do some testin here in NC I plan on checking it out against different guns / bands..
 

KABAND

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I'll do the same in a couple of days with that LEO hiding in the bushes :)

All things considered the LRD/DFR already is a very sensitive detector (at least on KA Band) so this test will be interesting.

Also I never quite understood the differentiation between Digital and Analog detectors. I mean I of course know what the difference between A/D is but for example the DFRs have a firmware and processor and it knows the frequency that it detects in 'digital terms'
 

droidxt

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I don't know if my detector is faulty or not - but with the NZ firmware on my LRD950 I've not had any Ka alerts from cop cars. I had 1 false Ka alert but that was it. I've driven past about 8 cop cars over the past 2 weeks and picked up nothing. Yesterday I was following highway patrol in a 60km/h zone and saw a cop flick his lights on, turn around and pull over a car for presumably speeding (unless based off number plate or something)? Maybe no one has been running radar lol.

I've turned on all Ka 4,5,6 and K1. I still get plenty false K band alerts from automatic doors etc. I doubt it's the firmware but to be sure I might try revert to US firmware.

Just in case, has anyone with the converted detector had real Ka alerts? I might have to get my detector tested with a stalker gun to be sure.
 

astronot

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I don't know if my detector is faulty or not - but with the NZ firmware on my LRD950 I've not had any Ka alerts from cop cars. I had 1 false Ka alert but that was it. I've driven past about 8 cop cars over the past 2 weeks and picked up nothing. Yesterday I was following highway patrol in a 60km/h zone and saw a cop flick his lights on, turn around and pull over a car for presumably speeding (unless based off number plate or something)? Maybe no one has been running radar lol.

I've turned on all Ka 4,5,6 and K1. I still get plenty false K band alerts from automatic doors etc. I doubt it's the firmware but to be sure I might try revert to US firmware.

Just in case, has anyone with the converted detector had real Ka alerts? I might have to get my detector tested with a stalker gun to be sure.
Interesting. I have NZ firmware on my dfr7 but didn't have any Ka alerts from cop cars. I used to get alerts when using Us firmware I had alerts on 33.8 MHz.


Mi 9T cihazımdan Tapatalk kullanılarak gönderildi
 

zuul

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I don't know if my detector is faulty or not - but with the NZ firmware on my LRD950 I've not had any Ka alerts from cop cars. I had 1 false Ka alert but that was it. I've driven past about 8 cop cars over the past 2 weeks and picked up nothing. Yesterday I was following highway patrol in a 60km/h zone and saw a cop flick his lights on, turn around and pull over a car for presumably speeding (unless based off number plate or something)? Maybe no one has been running radar lol.

I've turned on all Ka 4,5,6 and K1. I still get plenty false K band alerts from automatic doors etc. I doubt it's the firmware but to be sure I might try revert to US firmware.

Just in case, has anyone with the converted detector had real Ka alerts? I might have to get my detector tested with a stalker gun to be sure.
i haven't actually used my DFR7 since the conversion to NZ firmware... but what you're reporting is scary... that potentially we are losing Ka functionality by doing the NZ conversion...

i would be curious if anyone else has done any real world testing with the conversion... it seems like this issue needs to be resolved one way or another ASAP.
 

jonup

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I don't know if my detector is faulty or not - but with the NZ firmware on my LRD950 I've not had any Ka alerts from cop cars. I had 1 false Ka alert but that was it. I've driven past about 8 cop cars over the past 2 weeks and picked up nothing. Yesterday I was following highway patrol in a 60km/h zone and saw a cop flick his lights on, turn around and pull over a car for presumably speeding (unless based off number plate or something)? Maybe no one has been running radar lol.

I've turned on all Ka 4,5,6 and K1. I still get plenty false K band alerts from automatic doors etc. I doubt it's the firmware but to be sure I might try revert to US firmware.

Just in case, has anyone with the converted detector had real Ka alerts? I might have to get my detector tested with a stalker gun to be sure.
Given that most LEOs run 2,5,8 KA bands I can see why you are not picking any with 2 and 8 disabled. Though your area could be different. But I'll turn them on.
 

droidxt

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Given that most LEOs run 2,5,8 KA bands I can see why you are not picking any with 2 and 8 disabled. Though your area could be different. But I'll turn them on.
Cops here run only 34.7ghz so should only need 5,6...
 

UncleArthur

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Cops here run only 34.7ghz so should only need 5,6...
Hi all, just replying to put your minds at rest. I have a US DFR7 and was one of the earlier people to convert it to a DFR7 NZ firmware.
I run with KA 4,5,6 on and K1 on.

I've had several police KA alerts since doing the conversion from police cars both approaching from the front, and following from behind typically in the 34.7ghz range (+/- 0.1 ghz typically)
 

droidxt

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Hi all, just replying to put your minds at rest. I have a US DFR7 and was one of the earlier people to convert it to a DFR7 NZ firmware.
I run with KA 4,5,6 on and K1 on.

I've had several police KA alerts since doing the conversion from police cars both approaching from the front, and following from behind typically in the 34.7ghz range (+/- 0.1 ghz typically)
That's good. Mine is a lrd950 but pretty sure it's identical to the dfr7. I'll drive by a police station and hope I get some ka alerts.
 

Mithheru

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This is interesting and alarming. I have the Ka Stalker on loan from @dudeinnz. Pretty sure, I've tested this out since conversion but I will check again this evening and capture on video. I also have two different US DFR7s. So, I'll also run back the conversion Test Ka, then reapply the conversion and test again.
Post automatically merged:

In fact, I checked my records:

I first completed the conversion on my main DFR7 test unit on 21 October 2019. I've been running this detector on and off for testing ever since. The video here which I did more recently, was performed using this very same converted DFR7 Unit:



I have not applied the reverse conversion to this same unit yet, as I completed the conversion and reapplied the US firmware to another DFR7unit.

Therefore, the conversion should work flawlessly. However, perhaps there was a subtle change in firmware of some older DFR7 units? Therefore, I will go ahead and retest an older DFR7 I have will older serial number.
Post automatically merged:

perhaps there was a subtle change in firmware
Sorry, I meant to say 'Hardware' in the above post.
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Not getting Ka band also does not make any sense. We know Ka wide on the original US DFR7 covered these same frequencies. It would perhaps make sense to me if K band lower segment was not working, but that is not what people are reporting.

I can confirm having worked the conversion in both directions that the firmware is fully installed, as the detector itself installs the update. If the firmware was not fully installed, you'd have no life from your detector at all!

All of the above issues are reported with older units, so I wonder if there was indeed some subtle change made in the hardware manufacturing process for the newer units. However, I do note that the LRD950 was (and still is) available from Uniden New Zealand with the same firmware.

Perhaps we could test the previous Uniden NZ firmware on these older units. Once again, I want to confirm my full support for the conversion, and back conversion to US. However, it is critically important not to install any other firmware using the DFR7 NZ firmware tool, as this will terminate your detector. Please send me a PM if you are in need of the conversion back to US, but let's see if we can get to the bottom of this issue first.
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@winterbrew
You also have a newer DFR7 model and applied the conversion. Please could you also confirm Ka band detection is worked. So far seems to be all or nothing (although, please check the segments. Uniden NZ factory reset defaults to Ka 5 only.)
 
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winterbrew

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@winterbrew
You also have a newer DFR7 model and applied the conversion. Please could you also confirm Ka band detection is worked. So far seems to be all or nothing (although, please check the segments. Uniden NZ factory reset defaults to Ka 5 only.)
No worries, will check with Ka 35.5 and let you know.
 

UncleArthur

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This is interesting and alarming. I have the Ka Stalker on loan from @dudeinnz. Pretty sure, I've tested this out since conversion but I will check again this evening and capture on video. I also have two different US DFR7s. So, I'll also run back the conversion Test Ka, then reapply the conversion and test again.
Post automatically merged:

In fact, I checked my records:

I first completed the conversion on my main DFR7 test unit on 21 October 2019. I've been running this detector on and off for testing ever since. The video here which I did more recently, was performed using this very same converted DFR7 Unit:



I have not applied the reverse conversion to this same unit yet, as I completed the conversion and reapplied the US firmware to another DFR7unit.

Therefore, the conversion should work flawlessly. However, perhaps there was a subtle change in firmware of some older DFR7 units? Therefore, I will go ahead and retest an older DFR7 I have will older serial number.
Post automatically merged:


Sorry, I meant to say 'Hardware' in the above post.
Post automatically merged:

Not getting Ka band also does not make any sense. We know Ka wide on the original US DFR7 covered these same frequencies. It would perhaps make sense to me if K band lower segment was not working, but that is not what people are reporting.

I can confirm having worked the conversion in both directions that the firmware is fully installed, as the detector itself installs the update. If the firmware was not fully installed, you'd have no life from your detector at all!

All of the above issues are reported with older units, so I wonder if there was indeed some subtle change made in the hardware manufacturing process for the newer units. However, I do note that the LRD950 was (and still is) available from Uniden New Zealand with the same firmware.

Perhaps we could test the previous Uniden NZ firmware on these older units. Once again, I want to confirm my full support for the conversion, and back conversion to US. However, it is critically important not to install any other firmware using the DFR7 NZ firmware tool, as this will terminate your detector. Please send me a PM if you are in need of the conversion back to US, but let's see if we can get to the bottom of this issue first.
Post automatically merged:

@winterbrew
You also have a newer DFR7 model and applied the conversion. Please could you also confirm Ka band detection is worked. So far seems to be all or nothing (although, please check the segments. Uniden NZ factory reset defaults to Ka 5 only.)
Update just today - Picked up a LEO on 34.65Ghz on the way in to work this morning, he was sitting at the traffic lights opposite me, had a long strong signal for quite some time approaching and departing.
 

Mithheru

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Okay, I have tested my two US DFR7s and compared them both to @Zakk original unmodified DFR7 NZ. I have some interesting feedback:

The good news is that my two converted detectors are both working with Ka band detection as both US versions and NZ versions (also now multiple interconversions applied to both these detectors). My previous testing indicates the Ka band detection range is still very good.

However, I do note the Ka band frequency has shifted on the converted ones relative to Zakks one. Against Stalker gun at 34.749, All three DFR7s detected within Ka segment 5. But the two original US detectors also detected within Ka segment 4. One seems to have shifted down quite a bit further to the other. This suggests that the converted detectors may need to be retuned against a calibrated Ka source. @astronot opened up his DFR7 and noted some things that look like variable resistors, so now I wonder perhaps if that is what they are for. Please nobody try opening their detector up until I have done some more investigation on this.

I will post my testing video shortly...
 

astronot

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Okay, I have tested my two US DFR7s and compared them both to @Zakk original unmodified DFR7 NZ. I have some interesting feedback:

The good news is that my two converted detectors are both working with Ka band detection as both US versions and NZ versions (also now multiple interconversions applied to both these detectors). My previous testing indicates the Ka band detection range is still very good.

However, I do note the Ka band frequency has shifted on the converted ones relative to Zakks one. Against Stalker gun at 34.749, All three DFR7s detected within Ka segment 5. But the two original US detectors also detected within Ka segment 4. One seems to have shifted down quite a bit further to the other. This suggests that the converted detectors may need to be retuned against a calibrated Ka source. @astronot opened up his DFR7 and noted some things that look like variable resistors, so now I wonder perhaps if that is what they are for. Please nobody try opening their detector up until I have done some more investigation on this.

I will post my testing video shortly...
Here is the some photos off DFR7
 

Mithheru

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So here are some of the results of testing. Sorry, you can't see the displays very clearly, I'll move the camera closer next time!

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Okay, I had a thought... Perhaps in order to extend the K band scanning range on the NZ version, Uniden had to cut down part of the Ka band range (i.e. compare the R7 and R3). Therefore perhaps either something was cut off one end of the Ka band, or else something was cut out, and then extended by increasing the voltage, to cover the same range but with less resolution. Therefore I strongly suspect now there also needs to be a hardware tweak to one of the dials on the board to more correctly adjust the reported frequency to ensure the detected signals fits within the correct Ka band segment.
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If I get some time, I'll open one up again, and have a look. It'd be nice see if adjusting something a tine bit changes the Ka band frequency reported.
Post automatically merged:

Damn, I can't spell on this thing, I also can't edit my posts after the time limit expires!
 
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zuul

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thanks for looking into this... it seems like the two that are u.s. converted to nz are reporting different frequencies? how far off are those from what the gun is actually transmitting? i wouldn't mind if i have to turn on an extra segment to cover the variation. i would just need to know which segments those are... it's unfortunate there's not a way for the firmware to tell us what frequencies are assigned to which segments....
 

Mithheru

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The drop for the two frequencies was slightly different for each of these two segments. If you covered 1 or two segments lower than you would normally expect to need, that should cover it.
 

droidxt

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This checks out, as the majority of the time I was running Ka 5,6 and (maybe, can't remember) Ka 4. On the US firmware I was running Ka wide which probably included the whole frequency.

Another thing I noticed: I saw a redflex van in the distance and quickly switched on K1 in the menu. I don't know how long it takes for the band to actually become active - does it need rebooting? Didn't pickup anything from the van as I just passed it... Not really a fair test as the band should have been turned on, but just an observation.
 

Mithheru

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This checks out, as the majority of the time I was running Ka 5,6 and (maybe, can't remember) Ka 4. On the US firmware I was running Ka wide which probably included the whole frequency.

Another thing I noticed: I saw a redflex van in the distance and quickly switched on K1 in the menu. I don't know how long it takes for the band to actually become active - does it need rebooting? Didn't pickup anything from the van as I just passed it... Not really a fair test as the band should have been turned on, but just an observation.
K segments are definitely working properly. This has been confirmed by at least two other people on this thread as well as my own testing and redflex detection.
 

zuul

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I just did the conversion on my trusty DFR7, now to see how well it works with segging. I did it in the name of geekery and experimentation, thanks for all the hard work!
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It's close. I gathered this from https://www.radardirect.co.nz/product/uniden-950nz/#1440090448516-6fd42854-6adc

View attachment 134508
is there any way to determine if the segmentation list in the above quoted post is accurate for USA DFR7's converted to NZ?
 

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