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Galaxy Nation Explore the other side of the universe. Discuss AM/FM, XM, DISH, DirecTV, HD Radio, and all mp3 players. Here you can also discuss the ins and outs of tomorrow's radio technology...where music and satellites collide. Who said it's not rocket science?!?

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Old 01-07-2007, 04:41 PM   #16
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Ok, I retract a little bit of what i said before since I got a Sportster 4 during Xmas and it dos'nt do it with that one in the area, however they still need to get the repeater working in dunwoody. The unit is basically worthless there without it.
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Old 01-18-2007, 09:56 AM   #17
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Originally Posted by gumbyandpokie999
How about that new starmate 4? is that good?
Sorry for the late reply. The Starmate 4 is also good.

For this type of signal problem, here is a short summary of what I own:
The good ones: Stratus, Starmate4, Sportster4 (these are all the newest current radios).
The bad ones: Starmate ST-1, JVC PnP, Kenwood H2EV (version 2).
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Old 02-12-2007, 07:18 PM   #18
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Traffic cameras may use a portion of the 2.4GHz band to transmitting their signal back to a receiver, rather than running miles of cable. Their power level is usually from 1/4 watt to 25 watts. Without getting too deep into the technical aspect of things, a strong transmitter (or relatively strong in comparison) on an adjacent frequency will reduce reception performance on the desired frequency. This is a common receiver problem known as desense. The best analogy that I can come up with is you and a friend are sitting at a table in a restaurant having a conversation. A group of people at a nearby table are talking loudly. Although they are not talking directly to you, their "noise" is enough to make it more difficult to hear what your friend is saying.

So, what is going on here is that your receiver is listening for a whisper coming from a satellite that's at times 40k miles away, meanwhile, these camera transmitters are comparitively yelling though a megaphone a 100 yards away...effectively drowning out the sat signal, although they are NOT on the same frequency, just adjacent.
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Old 03-06-2007, 03:16 PM   #19
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Default Zoom in on the top of that tower!

I zoomed in on the top of that tower and think I may have found the source of the interference!
Attached Images
File Type: jpg Sat interference.jpg (20.3 KB, 15 views)

Last edited by PaulyOfPA; 03-06-2007 at 03:30 PM..
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