Static on Scanner when placed near XM radio???

[Pro-95]

Ok this is interesting and maybe someone here can explain what is happening.

Yesterday out at the lake I was scanning 150Mhz conventional.

My scanner (Pro-95) was about 4 ft from an XM satellite radio portable. When they turned on the XM radio, the scanner started picking up a click that was constant in timing (like a clock tick) and souded like the WWV signal. The XM radio failed to pick up any satellite broadcasts and mirrored the click from the scanner. Sorry I didn't grab the freq the scanner was on. So what is this?

 

[LarrySC]

Any receiving device, when placed next to another receiving device, will pick up local frequencies that are within the second device. Same happens with a cell phone next to 95 when scanner goes thru 800 MHz. Put scanner next to computer monitor or TV/VCR. Same thing.

 

[Thunderbolt]

The XM radio is essentially overloading the front-end of your scanner, causing desensing of the receiver. A Nextel radio will do the same to a scanner or public safety radio on 800 MHz.


73's

Ron

 

[Voyager]

The XM radio is essentially overloading the front-end of your scanner, causing desensing of the receiver. A Nextel radio will do the same to a scanner or public safety radio on 800 MHz.

While I would agree that the scanner is picking up RF generated by the XM radio, and it's possible for a NexTel radio to overload a scanner, I highly doubt that the RF is so strong in the XM receiver to overload the front end of the scanner. After all, the XM units DO have to pass type acceptance.

No doubt, the scanner is simply picking up the oscillators in the XM receiver - similar to the internal signals (AKA birdies) generated within the scanner itself.

Joe M.

 

[crayon]

No doubt, the scanner is simply picking up the oscillators in the XM receiver - similar to the internal signals (AKA birdies) generated within the scanner itself.

Close, but actually it is because XM radios are in fact setting up sub-space bubbles. Rumor has it that all of these radio will be aggreated to form a huge static warp shell.

:wink: