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Wireless cameras and first responder bands.

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merlin

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I didn't know that wireless cameras were permitted on frequencies dedicated for first responders.
Here is the span of the 700 Mhz band and the low end is assigned to first responders but as you can see, a digital video signal 10 Mhz wide smack in this portion of the band.
Well, S***, 2 devices, neither will transfer the video. Have to post it later.
Point being this is certain to interfere with our local fire department using this band.
 
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mmckenna

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What are we talking about? Did you not post a photo or something?

If by the lower end of the 700MHz spectrum, you are referring to "band 14" 758-768MHz, that is the FirstNet LTE stuff, it uses a 10MHz wide uplink and a 10MHz wide downlink. Standard LTE stuff. 700 MHz Public Safety Spectrum

Below that is LTE bands 12, 13, and 17, used by cellular carriers.
 

merlin

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Ok I got it now. Our local state police switched to this in combination bands and just looking for activity.
I do see the 10 Mhz wide bands below this and one is like +40 Db. Maybe the cell site next door.
 

KevinC

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Ok I got it now. Our local state police switched to this in combination bands and just looking for activity.
I do see the 10 Mhz wide bands below this and one is like +40 Db. Maybe the cell site next door.
+40???? Holy crap!
 

mmckenna

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Pretty sure he meant -40, unless it really was +40 and all that RF is impacting his brain...
 

merlin

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Pardon the crappy camera for this but here is a spectral, full span is 2 Mhz, a signal way off by itself about 894.4 Mhz.
These seem to change now and then, one has vanished ans one was just into the 700 Mhz band and just above a cell signal.
 

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