[Elecraft] P3 S meter variance

[Gary Gregory]

Al,

Yes, this does work and even the SSB sigs match very closely to the K3 S-Meter.

Regards,
Gary

On Sun, Jan 16, 2011 at 3:20 PM, Alan Bloom <alan at elecraft.com> wrote:
> There are a couple reasons why the K3's S meter and the P3 display may
> show a different level.
>
> As Don mentioned, the P3 will generally show a much lower level than the
> K3 on noise.  It's because the effective bandwidth of the P3 is
> generally only one display pixel, about 1/450 of the span.  Less
> bandwidth means less noise power in each display point.  The same thing
> happens to some extent with an SSB signal.
>
> Another issue is that the S meter reading on the K3 may change when you
> turn the preamp or attenuator on or off.  To prevent that happening, set
> CONFIG:SMTR MD to "ABS".
>
> If you do that and calibrate both the K3 S meter and the P3 amplitude,
> then the two should closely agree when measuring a steady CW carrier.
>
> Alan N1AL
>
>
> On Sat, 2011-01-15 at 23:16 -0500, bill wade, sr. wrote:
>> Newly installed P3. Noticed S meter reading on K3 will be 2-3 units
>> higher than that displayed on P3.  I've tried lengthening the signal
>> heights, but results are unsatisfactory:-( .
>>
>> Is there another method for bringing the two more in balance?
>>
>> 73
>>
>> Bill Wade, Ai4PF
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:Elecraft at mailman.qth.net
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>



-- 
Gary
VK4FD - Motorhome Mobile
http://www.qsl.net/vk4fd/
K3 #679, P3 #546
For everything else there's Mastercard!!!