[AMPS] receivers

[Hans Goldschmidt]

1-01-16 15.50, skrev Peter Chadwick på Peter_Chadwick@mitel.com följande:

> 
> Tom says:
> 
>> Blocking dynamic range is the ratio of the weakest
>> signal that can be heard to a signal off-frequency
>> that causes a detectable difference in noise or level
>> of the desired signal.
> 
> So it's a sort of mixture of phase noise performance and gain compression.
> Needs
> a good signal generator to measure - or
> do it at 21.4MHz minus a few kHz with a 21.4MHz filter
> cleaning up the sig genny. Needs to be plotted against offset to be evry
> menaingful though.
> 
> Interestingly enough, have you noted how all the ARRL review phase noise plots
> are pretty much always the same numbers?
> Is this because all rigs are pretty much the same, or is there
> a systematic effect?
> 
> 73
> 
> Peter G3RZP
> 
> 
> 
> --
> FAQ on WWW:               http://www.contesting.com/FAQ/amps
> Submissions:              amps@contesting.com
> Administrative requests:  amps-REQUEST@contesting.com
> Problems:                 owner-amps@contesting.com
> 
> 
In the ARRL curves very often there is a spike abt 15 khz away from the
carrier from the switched supply or maybe the synthesizer? But they never
comment the effects in receiving of this????
Why?

de Hans


--
FAQ on WWW:               http://www.contesting.com/FAQ/amps
Submissions:              amps@contesting.com
Administrative requests:  amps-REQUEST@contesting.com
Problems:                 owner-amps@contesting.com