Not all voltmeters behave the same with complex AC waveforms (such as
noise). Some of my Flukes are inaccurate at higher AC frequencies (like
above a few hundred Hz) - and they're spec'ed that way. What kind of meter
are you using, and where are you measuring (speaker terminals is where you
should be measuring from)?
Do you know what, exactly, the SP features/modifications are on your SP
Micor?
--- Jeff WN3A
> -----Original Message-----
> From: Repeater-Builder@yahoogroups.com
> [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Tim Sawyer
> Sent: Monday, September 06, 2010 6:07 PM
> To: Repeater-Builder@yahoogroups.com
> Subject: Re: [Repeater-Builder] Micor UHF Sensivity
>
>
>
> The Micor book says less than 0.5 uV for 20db quieting or
> 0.35 for 12 db SINAD. So the two are in fact equivalent. I
> get better than 0.35 for 12 db SINAD but I don't measure 0.5
> for 20 db quieting. I must be doing something wrong.
>
> --
> Tim
> :wq
>
> On Sep 6, 2010, at 12:52 PM, John J. Riddell wrote:
>
>
>
>
> 2V AC down to .2 v. AC is 20 DB quieting
> John VE3AMZ
>
> ----- Original Message -----
> From: Tim Sawyer <mailto:tisaw...@gmail.com>
> To: Repeater-Builder@yahoogroups.com
> Sent: Monday, September 06, 2010 3:48 PM
> Subject: Re: [Repeater-Builder] Micor UHF Sensivity
>
> I'm getting about 0.35 for 12 db SINAD. But
> that looks about 10 db quieting to me. What I typically do is
> open the squelch with no signal and set the volume to 2 Vac
> then crank up the signal to 0.2 vac. Isn't that 20 db, or am
> I missing something?
>
>
> --
> Tim
> :wq
>
> On Sep 6, 2010, at 10:46 AM, Eric Lemmon wrote:
>
>
> spec is 0.5
> uV without a preamp and 0.25 uV with a
> preamp, when using the 20 dB quieting
> method, and 0.35 and 0.175 respectively
> when using the 12 dB SINAD method
>
>
>
>
>
>
