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| multipath throb on sno-com http://interceptradio.com/bbs/viewtopic.php?f=26&t=2281 |
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| Author: | gregz [ Sat Aug 23, 2008 2:42 pm ] |
| Post subject: | multipath throb on sno-com |
I'm getting a loud throbbing noise floor when I listen to sno-com trunk. what is it? I'm guessing a multipath or simulcast overlap product? here's an audio clip http://h1.ripway.com/gregz/throbnoise.wav as the clip shows, it's not always the same frequency. it flanges between 10-20 times a second, my reciever was stationary. thanx, gregz |
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| Author: | Vizwar [ Sat Aug 23, 2008 2:57 pm ] |
| Post subject: | Re: multipath throb on sno-com |
Sounds like poor reception really. The sharpness of the static leads me to think the scanner is cutting out (something more local to the receiver). |
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| Author: | nickcarr [ Sat Aug 23, 2008 8:19 pm ] |
| Post subject: | Re: multipath throb on sno-com |
Greg, is your scanner near a cable modem? Cable modems have incredibly high EMI and can cause interference like that. |
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| Author: | SpudGunMan [ Sat Aug 23, 2008 8:39 pm ] |
| Post subject: | Re: multipath throb on sno-com |
anything with a comcast sticker will, I suffer from neighbors who dont care to help fix the issue. |
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| Author: | gregz [ Sun Aug 24, 2008 2:00 pm ] |
| Post subject: | Re: multipath throb on sno-com |
It's a mobile scanner in a car, and I was stationary in the parking lot of Aurora Village Costco. it's on the Snohomish/King Co boarder on highway 99. There wasn't much around me, I was in the north end of the parking lot with the engine off. <shrug> pretty weird </shrug> |
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| Author: | Sean [ Sun Aug 24, 2008 2:56 pm ] |
| Post subject: | Re: multipath throb on sno-com |
Nextel, or AT&T. Quick test is to attenuate the signal, if the s/n ratio gets better your rx is getting swamped. Now figure out who.... |
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| Author: | Mark [ Sun Aug 24, 2008 3:53 pm ] |
| Post subject: | Re: multipath throb on sno-com |
The Crista tower is less than a mile from Costco, for a start... |
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