SDS100 Reception Issues on LASD 480 Analog Frequencies

dmullen1373

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Joined
Jun 26, 2012
Messages
25
Yeah my used 436HP does way better on everything than the SDS -- does anybody have a clue as to whether or not LA-RICS is going to have TRUE simulcast sites where an SDS will be actually be required? I currently have the SG, East and Johnstone (all 700MHz) sites unavoided and I haven't had any trouble on my 436HP.

I guess I'm trying to determine whether or not the SDS is going to do better that what my 436HP already does and whether or not I should try and get my $650 back! :)
 

tkenny53

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Dec 19, 2002
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268
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socal
In my car with a external antenna on the trunk, I get lots of noise in the 470mhz area, sds100, but with a rubber antenna on the radio in the car, I get zero interference. All other freq's work fine
 

62Truck

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Aug 13, 2005
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It is the receiver chip that are of a too low quality to be used in a high end scanner, but was a low cost solution to be able to receive simulcast systems.

It not that its low quality, its that they are using a chip that is meant for a TV tuner which is pretty broadband, and doesn't do well filtering out adjacent channels.

What I would like to see Uniden do, is make the attenuator adjustable so you can fine tune it.
 

Ubbe

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Sep 8, 2006
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8,944
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Stockholm, Sweden
It not that its low quality
It's low quality with lots of internal spurious signals are its biggest problem, then adjacent channel and overload issues. For home use with a constant signal level on the channels, a user adjustable 0-30dB attenuator would probably work to improve reception (with a saved value for each system?) but mobile it would be too much variations in signal level to be useful.

/Ubbe
 
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