Baught a antenna from Fry's.(its HUGE) now none of my regular(800 mghz) antennas will work. only the police fequencies sometimes. Radio shack is clueless. PLEASE HELP. There is no "A" on anything. e-mail email@example.com
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If you're talking about a digital trunked system with multiple towers or a simulcast system, then 'welcome to the club'. I have the same problem, but that only applies to digital trunked multisite P25 9600 baud systems. Everything else should be clear. What band are you trying to listen to: VHF Lo, VHF Hi, UHF, 800MHz, analog or digital? RS's more expensive antenna will give you better reception on VHF over the 'stock' rubber antenna that they give you. Let me know what you're trying to hear, and I can help more on this issue. Okay?
Antenna splitters are available to let you use more than one receiver on a single antenna with minimal signal loss. Grove Enterprises (http://grove-ent.com/) is one source, and a Google search should bring up others. Unless you're tapping into a fantastic outdoor antenna though, you might want to consider a low-cost indoor antenna such as this one that I found on eBay: http://cgi.ebay.com/SNOOP-SCANNER-ANTENNA-FITS-UNIDEN-BEARCAT-police-radio-/150442224106?cmd=ViewItem&pt=LH_DefaultDomain_0&hash=item23070e29ea
The signal received on scanners depends on a number of factors. The most important is the elevation of your location. If you are in a valley or have higher ground around you, this will screen signals from you and will reduce the number of stations you can hear.
Secondly, receivers vary enormously from one to another. The one you are using may simply be less sensitive.
Thirdly, the position and type of antenna is crucial. If you are using a directional antenna it will only pick up signal from the front and some from the back. An omni-directional antenna will allow you to pick up signals through 360 degrees. The antenna must also be as high as you can get it, especially if you are in a valley.
Some emergency services use repeaters which allow you to hear signals much further away. You may not be in range of a police repeater.