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Difference between revisions of "Object Oriented Scanners Overload Issues"

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This is a stub <br>
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The scanners being discussed in this article include the following;
  
Please put all information regarding overloading with the GRE/RS scanners, and how to resolve them here. Opinions and discussions should be placed in the GRE or RS forums. Keep the Category statement as the last line of this article. Topics should include but are not limited to filters, techniques, causes, ect.
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{{Text_ObjectOrientedScannersTable}}
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{{Text SDObjectOrientedScannersTableWOCaveats}}
  
  
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==These scanners have a very sensitive front end==
  
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In urban and semi urban environments, or those living in or near areas with numerous FM radio towers, cell towers or places that uses pagers like a hospital, this causes a serious problem with overloading and desense. The cause is likely to be insufficient filtering in the front end, allowing high power FM stations, pagers and so forth to blast into the amplifier (more information on this is needed).<br>
  
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If you are putting up an outside antenna or even something indoors like an attic antenna, a RS800 or other band specific antenna most of any size on these scanners, it's very likely that you will run into this issue. While you can run the Attenuator on the frequencies where you have trouble, a far better approach is to add band appropriate filtering. When adding a filter to your scanner, make the cable run as short as possible to minimize the possibility of stray pickup as well as minimize connectors . The following distributors/manufacturers of filters have been mentioned on RR in the past; please add any others that are found to be helpful.<br>
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* [http://www.iceradioproducts.com/filtersrf.html ICE Filters Page]
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* [http://www.parelectronics.com/ Par Electronics]
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**[http://www.scannermaster.com/HPN_30118_Combined_Notch_Filter_p/24-531024.htm| FM trap/ Combined Notch Filter HPN-30118 ]
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** {{Thread|splitters-filters-multicouplers/|256711-hpn-30118-combined-notch-filter.html| Pars FM trap/ Combined Notch Filter HPN-30118 |}} discussion
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* [http://www.scannermaster.com/SearchResults.asp?Cat=39 Scanner Master Filters page]
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* [http://www.stridsberg.com/prod02.htm Stridsberg Engineering Filters]
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* [https://www.tselectronic.com/winegard/ft7600.html?tse_Session=d5241f858f3bbd93f762b4a0058658a3 Winegard FT7600 Variable FM trap]
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** You can read chgomonitor's comments about this unit [http://www.radioreference.com/forums/showthread.php?t=75956 HERE]
  
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Additional Links:
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*[[Simulcast digital distortion]] page.
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*[[GRE/RS/Whistler based DSP ADC/DAC Adjustments]]
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Return to the [[GRE/RS Object Oriented Scanners FAQ]]
 
[[Category:Object Oriented Scanners]]
 
[[Category:Object Oriented Scanners]]
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[[Category:Handheld Scanners]]
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[[Category:Mobile Scanners]]
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[[Category:Digital Scanners with DMR]]
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[[Category:Digital Scanners without DMR]]
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[[Category:Digital Scanners with MOTOTRBO]]
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[[Category:Digital Scanners without MOTOTRBO]]
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[[Category:Digital Scanners without NXDN]]
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[[Category:Digital Scanners without ProVoice]]

Latest revision as of 19:56, 26 August 2017

The scanners being discussed in this article include the following;

GRE Model Older RS Model Newest RS Model Whistler Model
PSR-3101
PSR-4101
PSR-500 Pro-106 Pro-651 WS1040
PSR-600 Pro-197 Pro-652 WS1065
  1. Trunking w/ Analog Voice Only scanners, others shown in table can handle up-to Digital P25 Phase I
GRE Radio Shack Whistler
PSR-700 Pro-107
Pro-18
PSR-800 Pro-668 WS1080
WS1088
TRX-1
PSR-900 WS1095
WS1098
TRX-2


These scanners have a very sensitive front end

In urban and semi urban environments, or those living in or near areas with numerous FM radio towers, cell towers or places that uses pagers like a hospital, this causes a serious problem with overloading and desense. The cause is likely to be insufficient filtering in the front end, allowing high power FM stations, pagers and so forth to blast into the amplifier (more information on this is needed).

If you are putting up an outside antenna or even something indoors like an attic antenna, a RS800 or other band specific antenna most of any size on these scanners, it's very likely that you will run into this issue. While you can run the Attenuator on the frequencies where you have trouble, a far better approach is to add band appropriate filtering. When adding a filter to your scanner, make the cable run as short as possible to minimize the possibility of stray pickup as well as minimize connectors . The following distributors/manufacturers of filters have been mentioned on RR in the past; please add any others that are found to be helpful.


Additional Links:


Return to the GRE/RS Object Oriented Scanners FAQ