August 28th, 2014, 10:54
August 28th, 2014, 11:48
August 28th, 2014, 14:19
August 28th, 2014, 15:03
August 28th, 2014, 17:04
August 28th, 2014, 18:23
einstein9 wrote:Well, not working means Power is ON, battery is OK very good (tested)
but when i power it ON nothing happens
no jamming Wifi or any other
:>
August 28th, 2014, 18:34
Yes, we have played with similar device here.einstein9 wrote:Am looking for someone who knows about Signal Jammer for Wifi/GSM
...
My device looks like this: http://www.100-gift.com/uploads/138/248 ... 02-873.jpg
August 28th, 2014, 18:42
Dmitri wrote:Yes, we have played with similar device here.einstein9 wrote:Am looking for someone who knows about Signal Jammer for Wifi/GSM
...
My device looks like this: http://www.100-gift.com/uploads/138/248 ... 02-873.jpg
I don't have anything besides a tablet, so can't check .RAR contents, but according to the picture, the jammer looks like many of its twins from China. Quite likely the problem is something typical to the "tools" from there, like bad soldering or cheap components.
So I believe it may be worth repairing just for fun only and if you need such device for some reason it would be better just to order a new one instead (at least because your time is obviously more expensive).
August 29th, 2014, 8:14
August 30th, 2014, 4:00
BlackST wrote:Ask someone with a spectrum analyzer in the 5 GHz range to check it . 30 seconds . You should see a sweeping signal or "block noise" (most probably the first) unless its working principle is something else.
Too bad I can't borrow you the instrument.
P.S. if you have a certain work flow in the RF field it is something worth having. Used and calibrated Agilent 26-28 GHz are in the 10k EUR range, if you need lower end like 18 GHz price drops a lot, 2-3k EUR. Usually the higher the frequency the higher the low end range let's say you have 1 MHz to 26 GHz and another is 10 KHz to 10 GHz. Of course if you work with LW or i.e. EAS the second is perfect. I have to use both
August 30th, 2014, 5:28
einstein9 wrote:I think that i will through it away my dear, i dont have the spectrum analyzer...
August 30th, 2014, 10:33
fzabkar wrote:einstein9 wrote:I think that i will through it away my dear, i dont have the spectrum analyzer...
All you probably need is a $5 multimeter and some basic electronics knowledge. The URL I provided is designed to get you to the latter goal for free. To me it looks like a potentially trivial job for a competent tech. I suspect that IC1, IC2, and IC3 are commonly available chips costing around $1.
BTW, it helps to know what the board actually does (ie no WiFi) before you decide that it's not working.
Hint: Look under the LED at the LHS of the PCB.
August 30th, 2014, 17:37
September 1st, 2014, 0:20
einstein9 wrote:BlackST wrote:Ask someone with a spectrum analyzer in the 5 GHz range to check it . 30 seconds . You should see a sweeping signal or "block noise" (most probably the first) unless its working principle is something else.
Too bad I can't borrow you the instrument.
P.S. if you have a certain work flow in the RF field it is something worth having. Used and calibrated Agilent 26-28 GHz are in the 10k EUR range, if you need lower end like 18 GHz price drops a lot, 2-3k EUR. Usually the higher the frequency the higher the low end range let's say you have 1 MHz to 26 GHz and another is 10 KHz to 10 GHz. Of course if you work with LW or i.e. EAS the second is perfect. I have to use both
Humm,
I think that i will through it away my dear, i dont have the spectrum analyzer in addition seems not worth repairing as you said
Thx
Dmitri
BlackST
fzabkar
i might buy another one or i dono
Thnx again all of you
September 27th, 2014, 16:55
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