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expiredLyubomirN posted Dec 13, 2025 10:20 PM

Uniden R8 GPS Extreme Long-Range Radar/Laser Detector

$657

$750

12% off
+ Free Shippingat Amazon
75 Comments
16.4K Views
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Deal Details
Amazon has Uniden R8 GPS Extreme Long-Range Radar/Laser Detector (UNIDEN-R8) on sale for $656.47. Shipping is free.

Thanks to community member LyubomirN for finding this deal.

Features:
  • Unsurpassed range and sensitivity w/ Dual Antenna
  • Detect threats from all four directions, with voice alerts for the direction of the threat
  • Shows the band and signal strength for each threat
  • Remembers and automatically mute false alerts (such as retail store doors) along your routes
  • Preloaded red light and speed camera locations with free database and firmware updates
  • Voice alerts allow for hands-free operation and provide clear communication
  • K/KA band filtering with the least amount of false alerts from blind spot monitoring & collision avoidance systems in other vehicles

Editor's Notes

Written by megakimcheelove | Staff

Original Post

Written by LyubomirN
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Amazon has Uniden R8 GPS Extreme Long-Range Radar/Laser Detector (UNIDEN-R8) on sale for $656.47. Shipping is free.

Thanks to community member LyubomirN for finding this deal.

Features:
  • Unsurpassed range and sensitivity w/ Dual Antenna
  • Detect threats from all four directions, with voice alerts for the direction of the threat
  • Shows the band and signal strength for each threat
  • Remembers and automatically mute false alerts (such as retail store doors) along your routes
  • Preloaded red light and speed camera locations with free database and firmware updates
  • Voice alerts allow for hands-free operation and provide clear communication
  • K/KA band filtering with the least amount of false alerts from blind spot monitoring & collision avoidance systems in other vehicles

Editor's Notes

Written by megakimcheelove | Staff

Original Post

Written by LyubomirN

Community Voting

Deal Score
+37
Good Deal
Visit Amazon

Top Comments

KR16
135Comments
74Reputation
The Supreme Court doesn't make laws.
Go to Comment
Tyross
3.2KComments
936Reputation
A very common use for these are to save you from getting a ticket when cities drop the speed limit from 80 to 40 for a few hundred feet, such as at the bottom of a hill to fatten up revenue.
Go to Comment
navyseal334
294Comments
45Reputation
I don't "speed" often (destroys mpg efficiency) and even then is typically 4-7 over. All of this is the well within the normal flow of traffic. Radar detector helps remind me to mind my speed and protect against the small chance that a cop may decide to penalize even a marginal speed overage.

Not everyone using one of these is the maniac going 20mph faster than everyone else, weaving in and out of traffic, though if a ban on these would prevent those dudes, then by all means bring it on.
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75 Comments

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Dec 15, 2025 6:35 PM
908 Comments
Joined Oct 2009
dba_tech_99Dec 15, 2025 6:35 PM
908 Comments
Quote from navyseal334 :
I don't "speed" often (destroys mpg efficiency) and even then is typically 4-7 over. All of this is the well within the normal flow of traffic. Radar detector helps remind me to mind my speed and protect against the small chance that a cop may decide to penalize even a marginal speed overage.

Not everyone using one of these is the maniac going 20mph faster than everyone else, weaving in and out of traffic, though if a ban on these would prevent those dudes, then by all means bring it on.
bunch of people trying to control the world instead of worrying about their own issues. This bad by will save your bacon from bacon if used properly. I should know. Now back to your regularly scheduled judgment crying. Wink
2
Dec 15, 2025 6:46 PM
1.7K Comments
Joined Sep 2018
gathermewoolDec 15, 2025 6:46 PM
1.7K Comments
Quote from yhzh :
The main upgrade is directional arrows that indicate where the signal is coming from. The R8 does have better range as well, but the R3 has more than sufficient range. I'd recommend an R7 over the R8 if you want to upgrade to arrows.
Sorry, I meant updating the software, not upgrading to a higher R7/8. I haven't updated my R3 since buying it.
1
1
Dec 15, 2025 7:19 PM
1.1K Comments
Joined Aug 2011
JXN89Dec 15, 2025 7:19 PM
1.1K Comments
Quote from ClownBaby :
Save $656 by not driving like a maniac. The Supreme Court needs to ban these things
or we can just ban your prius
4
Dec 15, 2025 7:35 PM
477 Comments
Joined Dec 2012
DonC69Dec 15, 2025 7:35 PM
477 Comments
Quote from Santa_Claus :
Contact their support or is yours stolen?
Not stolen. Purchased from buydig.
2
Dec 15, 2025 7:37 PM
1.2K Comments
Joined Jul 2003
shaggymattDec 15, 2025 7:37 PM
1.2K Comments
Quote from gathermewool :
Dumb question: what does updating these do? I have an R3 that just...works
Updating helps with the chattiness of the unit. They build in more filtering for BSM detection systems.

I love my R8 which I bought two years ago as a refurb and have no issues with updating.
Dec 15, 2025 7:47 PM
1.7K Comments
Joined Sep 2018
gathermewoolDec 15, 2025 7:47 PM
1.7K Comments
Quote from shaggymatt :
Updating helps with the chattiness of the unit. They build in more filtering for BSM detection systems.

I love my R8 which I bought two years ago as a refurb and have no issues with updating.
Thanks for that! Once I switched to Advanced mode it's much quieter and still accurate to police presence. It's saved me numerous times, especially when, like the top poster above mentioned, speed limits lower drastically in local areas.
Dec 15, 2025 8:16 PM
358 Comments
Joined Apr 2020
rambojewDec 15, 2025 8:16 PM
358 Comments
This is an incredible investment to make if you've got a lead foot. Driving nearly 50k miles/year, I absolutely love mine and couldn't imagine not having this aid. Recently bought the R8 Companion app and wish I had done so sooner. It's very, very helpful especially when using it in conjunction with other apps like Highway Radar and Waze. Results vary by location (ex. if LE agencies local to you use laser instead of Ka radar, having a RD won't be as helpful as by the time you're notified of a laser detection, the cop has already locked your speed unlike Ka band where you're notified miles in advance allowing you the opportunity to slow down prior to being locked.) This is hands down one of the best and most useful tech products I've ever owned and it has saved me a TON of money and trouble.
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Dec 15, 2025 10:32 PM
3.8K Comments
Joined Apr 2011
kida182001Dec 15, 2025 10:32 PM
3.8K Comments
Quote from ThePublisher :
This vs Valentine? I really like that Valentine will updates units instead of having to buy a new one every time new tech comes out.
I've heard that the company went downhill since the owner passed away, like bad customer service or taking forever to ship out products. Not sure if they've improved. Also, they only recently released an update for photo radar for the v1 gen2 while other companies, like Uniden, already had the feature for awhile now for their devices.

After a lot of reading, it seems like the best option is the R7 with the international firmware.
Dec 15, 2025 11:08 PM
31 Comments
Joined Aug 2019
Elwood_BluesDec 15, 2025 11:08 PM
31 Comments
Great deal, but this guy believes Escort Redline 360c is "dramatically better".

https://www.torquenews.com/17998/...tector-was
1
Dec 15, 2025 11:13 PM
318 Comments
Joined Sep 2011
lausaiDec 15, 2025 11:13 PM
318 Comments
got this last year ... been great so far but hope i don't run into updating issues
Dec 15, 2025 11:46 PM
4K Comments
Joined Dec 2008
konoplyaDec 15, 2025 11:46 PM
4K Comments
Quote from DonC69 :
Not sure if it's the detector or the program. I tried it on two computers and it says no detector.
Def usb cable. It's weird. I had the same thing with the r7
Dec 16, 2025 12:06 AM
1.1K Comments
Joined Oct 2015
TamelCoeDec 16, 2025 12:06 AM
1.1K Comments
Factory certified (like new) from Uniden.com is $585 after 10% off code FF2025

Link: https://uniden.com/products/r8-ra...2807897146
Dec 16, 2025 12:14 AM
107 Comments
Joined Apr 2008
srteblueDec 16, 2025 12:14 AM
107 Comments
been waiting for the r4 to go on sale...ugh
Dec 16, 2025 12:18 AM
431 Comments
Joined Dec 2023
PowerfulMagic115Dec 16, 2025 12:18 AM
431 Comments
Quote from dba_tech_99 :
bunch of people trying to control the world instead of worrying about their own issues. This bad by will save your bacon from bacon if used properly. I should know. Now back to your regularly scheduled judgment crying.
This isn't going to do anything.
Last edited by PowerfulMagic115 July 22, 2026 at 03:26 AM.
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Dec 16, 2025 12:19 AM
431 Comments
Joined Dec 2023
PowerfulMagic115Dec 16, 2025 12:19 AM
431 Comments
Quote from Friedsushi87 :
There are versions of these devices that not only inform you when it detects a radar signal, but it can actively jam the radar by producing it's own signal. Cops have gotten wise to this so there are newer ones that will temporarily disrupt the reader without causing it to register a jam, and it allows you to slow down, giving you the additional time to reduce speed before it lets the cop get a reading on you that by that point is legal speed
Good luck with your shenanigans.
Last edited by PowerfulMagic115 July 22, 2026 at 03:26 AM.
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