Speed Trap Hunter Forum: Best Radar Detectors, Laser Jammers, Laser Detectors, Speed Cameras Forum  

Go Back   Speed Trap Hunter Forum: Best Radar Detectors, Laser Jammers, Laser Detectors, Speed Cameras Forum > Speed Trap Countermeasures > Radar Detectors
Radar Detectors Forum Logon:


Radar Detectors Discussion forum related to the general operation of radar detectors.

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
  #1 (permalink)   IP: 99.33.240.254
Old 2009-09-02
Stealth Enthusiast Stealth Enthusiast is offline
Senior Member
 
Join Date: 2009 Jun
Posts: 7
Stealth Enthusiast is on a distinguished road
Question Pop, I/O and QT?

Technically speaking, what is the difference between Pop, I/O and QT?


Stealth Enthusiast's Sig:.
Curiosity was framed. Ignorance killed the cat.
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
  #2 (permalink)   IP: 71.233.181.244
Old 2009-09-02
Michael B Michael B is offline
Moderator
 
Join Date: 2007 Jul
Posts: 9
Michael B is on a distinguished road
Default

POP is a trademark name by MPH Industries and is associated with the use of their feature typically providing an RF signal for 67ms or less controlled by a microprocessor.

I/O is a term associated when a LEO waits until the last possible opportunity and then turns on his or her radar giving the target vehicle no advanced warning. This is done typically when the LEO knows the vehicle is speeding and therefore is less concened with warning any other vehicles down the road as they have their target in sight.

QT is a technique where a LEO may quickly trigger a radar to check the speed of an oncoming vehicle while attempting to not alert detectors that may be in vehicles further down the road. QT is basically a manual version of POP as it is controlled by a human rather than a microprocessor. QT time can range from approx .5 seconds to 1 second as each attempt may vary due to the human condition.

Another issue that is rarely discussed is reflected radar regardless of the length of time the radar is triggered. This can even be a result of CO (constant on). The scenerio is that radar that is set up around a corner is difficult to detect however if a vehicle ahead of you rounds the bend in the road, it can briefly reflect the radar energy down the road to you for a very brief period (fractions of a second). A detector that can validate and respond to this encounter may receive advanced warning of the radar around the corner. A unit that does not validate and respond to this type of encounter may not provide any advanced warning until they are the one that round the corner.

I have experienced this many times and as recently as last week.
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
  #3 (permalink)   IP: 99.33.240.254
Old 2009-09-02
Stealth Enthusiast Stealth Enthusiast is offline
Senior Member
 
Join Date: 2009 Jun
Posts: 7
Stealth Enthusiast is on a distinguished road
Question

Quote:
Originally Posted by Michael B View Post
QT is basically a manual version of POP
Thank you for the explanation

So then if someone turns their pop detection on, they should be able to increase their chances of also picking up QT?


Stealth Enthusiast's Sig:.
Curiosity was framed. Ignorance killed the cat.
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
  #4 (permalink)   IP: 71.233.181.244
Old 2009-09-03
Michael B Michael B is offline
Moderator
 
Join Date: 2007 Jul
Posts: 9
Michael B is on a distinguished road
Default

Not necessarily,

POP detection is the units ability to respond to brief opportunitues of RF on K and 33.8GHz.
Some models do not even attempt to check for K POP and only attempt the 33.8 POP

There are different methods that are used by the manufacturers to do this, one of which is to check the K and 33.8 area more often for this brief POP signal.

If you are spending more time looking at K and 33.8, you are spending less time looking in other areas such as X, 34.7, and 35.5

If the entire unit is swept faster when POP is on, the unit will see all radar faster however that does not mean that the unit will alert you as software filters may be envoked as a result of the POP mode being turned on to keep the unit from falsing heavily to other radar detectors with the exception of the K and 33.8 receiving window.

A downside to sweeping faster is it can cause a bit of sensitivity loss in particular at Ka band.

I ran a test with no software filters on a unit and had 24 false alerts due to other radar detectors in a 24 mile drive in moderate highway traffic.

On average there is another radar detector within 1 of 14 cars ahead of you and/or 1 of 14 cars behind you. Think of that when you are driving.
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
  #5 (permalink)   IP: 192.168.2.109
Old 2009-09-03
Speed Trap Hunter's Avatar
Speed Trap Hunter Speed Trap Hunter is offline
Administrator
 
Join Date: 2007 Jun
Posts: 32
Speed Trap Hunter has disabled reputation
Default

Mike,

Thanks for bringing up the crucial point about the importance of being able to detect brief reflections of radar farther down the road from longer instances of IO or CO radar. I suspect this scenario will occur even more frequently than possibly quick triggers themselves.

One recent article published does indeed discuss this and also provides a video demonstrating the effect and how quicker detectors can alert to it while "slower" ones do not.

Veil Guy: The Most Lethal Form of Police RADAR and How to Protect Against It

Unfortunately, other than the real-tests conducted by myself and the Veil Guy, all other "controlled tests" and/or reviews to date simply test for range (and sensitivity) to constant-on radar. I hope this changes one day.

This leaves out a huge part of the equation when it comes to overall real-world performance, as quickness to alert is an especially important performance attribute of any dependable detector, something, that I know, you understand all too well as Whistlers are some of the quickest detectors made today.

STH


Speed Trap Hunter's Sig:Experience the latest working countermeasures in the real-world of actual driving:=====

Imitation is the sincerest form of flattery.

Loyalty is above All, save Honor.

Building, A Future Worth Creating, Today.
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Reply



Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -4. The time now is 10:45.


©2019 SpeedTrapHunter