snooper detector internals

[laserblaster]

i was reading through the old posts and i saw a pic of some radio shack detector....... it looks the same as my snooper sd815i

the waveguide and laser diode is the same....... but i've never had a laser alert on my snooper...





i took the 2 screws out..... except the gunn diode one... because this was set and i knew if i messed with it i'd perminantly stuff the detector up!

the other 2 screws were screwed all the way in so i knew i couldnt do harm...

the result the detector didnt work!!

i tried this out before i come to the forum......

when i had no idea how they work! i've still just found out what a gunn diode is!!

[laserblaster]

also it jams my neighbours satelite up some some channels!

hows it doing this!!

[SmaartAasSaabr]

Well apparently the LO on my satellite box leaks Ka band, and most television satellite run Ku band...

[jimbonzzz]

Ku Satellite(ExpressVu, Dishnet, DirecTV etc) is from 12.25 to 12.75 Ghz. In order to mix it down for receive, the LNB has a local oscillator that runs @ 11.3 GHz, which produces a harmonic in the Ka band (11.3 GHz x 3 = 33.9 GHz).

Some detector LOs run in the 11-12 GHz range, so there is definitely the potential for interference, similar to the RDs interfering with the VSATs (SmaartAasSaabr posted a document on this recently, that can also be found On Roy's Site)

[CLTX11]

Ku Satellite(ExpressVu, Dishnet, DirecTV etc) is from 12.25 to 12.75 Ghz. In order to mix it down for receive, the LNB has a local oscillator that runs @ 11.3 GHz, which produces a harmonic in the Ka band (11.3 GHz x 3 = 33.9 GHz).

Some detector LOs run in the 11-12 GHz range, so there is definitely the potential for interference, similar to the RDs interfering with the VSATs (SmaartAasSaabr posted a document on this recently, that can also be found On Roy's Site)

You sure do know your stuff.