[AMPS] Receiver performance

[Michael Tope]

I don't think there is anything fundamentally wrong with DSP 
technology. A DSP signal processing block will have an intercept 
point and a noise floor associated with it. As long as the designer 
places it in the signal chain based upon sound design principles - 
e.g. proper gain distribution, then it will work. Unfortunately, 
with the current level of technology available, sound design 
principles seem to dictate that the DSP appear in the audio 
section. Hybrid rigs like the FT1000MP and TS950SDX appear to 
be the way to go. 

73 de Mike, W4EF................ 

----------
From: 	Peter Chadwick[SMTP:Peter_Chadwick@mitel.com]
Sent: 	Thursday, March 16, 2000 1:07 AM
To: 	amps@contesting.com; 'G3SEK'
Subject: 	RE: [AMPS] Receiver performance


Tom says:

>That's because the filters you tested are after the receivers analog 
>selectivity. Look at the 756PRO reviews coming out, where it is 
>compared to things like the 1000MP.

I think the noise performance is different because the AF DSP filters will
have their noise floor determined by the receiver, and thus the noise input
likely to be a long way above the floor of the DSP. This gives several bits
toggling on noise, which is a rather different situation to IF DSP.


73

Peter G3RZP


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