Quick & Efficient

Involvement: General (knows how to use it) - Ownership: more than 1 month

Pros:I have purchased many of these items and these are excellent blockers. I have tested this device on several devices, several device extensions and GPS enabled phones and have found the range to be around 30 - 50 foot, with great effect through walls and ceilings.Seems to affect L1 type GPS

Cons:Not the best build, aerials have commonly being loose but doesn't affect blocking effect.Car charger seemed to overcharge and over heat device but still worked fine.Both chargers where a little loose when plugging in

Other Thoughts:None really, just for GPS this device is excellent.Possibly could upgrade to affect L2, L3 grade GPS systems

Bottomline:Great for L1 GPS system, these L1 systems are very common so alot of systems with be affected with this deviceFor the price you can't complain.

Works better than expected.

Involvement: General (knows how to use it) - Ownership: more than 1 month

Pros:Purchased this item and am happy to report it performs as expected. I find that any GPS device within a 40 foot range (maximum distance that I have tested to date) immediatly loses their signal and cease to function. I have tested this with a 2 seperate GPS devices, several GPS enable phones.

Cons:The battery seems to self doscharge even when it is not powered on. If you leave the auto power adapter plugged in when the car is turned off there is a back voltage that also depletes the batteries charge.

Other Thoughts:Very handy. I would buy again if something happened to this one.

Bottomline:Works for me.

Works great!!

Involvement: General (knows how to use it) - Ownership: 1 week to 1 month

Pros:Works as expected! I was a little concerned about ordering from this website because I researched it and heard some negative things, However no problems at all! Shipping took a little while but I ordered it during the holiday season. Turn it on and wait 30 seconds (I timed it)and you disappear from the gps screen. Tested at about 80 feet and still worked great.

Cons:Must be careful with antenna. I just remove mine when im not using it.

Bottomline:Highly recommended! I'm want a cell phone blocker next!!

High Power GPS Blocker with AC Adapter and Car Cha

Involvement: Expert (understands the inner workings) - Ownership: 1 day to 1 week

Pros:Seems Solid, Price is good, Works .................................................................................................................................

Cons:none yet ..................................................................................................................................

Other Thoughts:A built in antenna would be nice...............................................................................................................................................

Bottomline:Great unit that works very well. I have 2 Garmin products (one built-in in car, one hand held) and this thing totally blocks all sat's within 10 seconds of being turned on. All sat's return to former glory once turned off. I tried the unit at approx. 15 meters from both GPS's and still blocked %100.

Well worth the money

Involvement: Expert (understands the inner workings) - Ownership: more than 1 month

Pros:instantly drops gps tracking, verified that it works with decent range.

Cons:button sucks, i removed it and use the charger end to turn it off and on. uses male sma connector. I need to have 500 characters so have to keep typing in order to reach that number

Other Thoughts:can easily remove the board and hide it somewhere, in order to review this item it requires that i type have 500 words of details to talk to you about.. I just wanted my points, oh why did i start this.

Bottomline:Im happy i bought it, getting really iritated though, this is getting ridiculous

NOT BAD!

Involvement: Novice (still getting used to it) - Ownership: 1 day to 1 week

Pros:No shipping problems, the packaging was very low profile and marked as a gift to avoid additonal duties. Well built, works well very tiny unit easy to conceal on or about your person. Great for avoiding tracking on the road by nosey bosses or anyone else!

Cons:Cheaply assembled antennae! be careful with it mine broke after an hour of pocket carry but can be replaced! I just used the antennae off a cctv remote cam receiver!

Other Thoughts:I'm ordering more for my personnel!

Bottomline:Good investment if used properly and with your countries regulations

Bigger than other GPS blocker here. just as good

Involvement: General (knows how to use it) - Ownership: more than 1 month

Pros:Very cheap.Stops GPS reception as soon as its switched on.Range will cover a whole large room.Battery lasts 2.0 - 2.5 hours.

Cons:Button easy to switch on and off if held in pocket.

Other Thoughts:Gets warm to the touch after a while, but just fine.

Bottomline:If you want to block GPS then this is the cheapest option. Go for it.

works well

Involvement: Expert (understands the inner workings) - Ownership: more than 1 month

Pros:Well made, and has pretty good coverage.All the devices i tested it on lost GPS reception instantly :)

Cons:Its slightly large though, but still fits in your palm.

Other Thoughts:

Bottomline:Good unit and works well.