Good points, all. Thanks Alan. 73, matt W6NIA
On Sun, 14 Apr 2013 18:13:35 -0700, you wrote: >Hi Matt, > >If they matched it would be a coincidence. For example, if the P3 is >set to 45 kHz span, then each frequency point on the P3 display is about >100 Hz wide. If the K3 bandwidth is 2.7 kHz, then on a wideband signal >like band noise or SSB, 27 times (14 dB) as much signal is getting to >the K3's S meter as gets to each frequency point of the P3. So you'd >expect the average signal level on the P3 to be about 14 dB (2 or 3 >S-units) lower. > >To illustrate this without a P3, try this: Set the K3 to the normal 2.7 >kHz bandwidth, tune in an SSB signal and note the S meter reading. Now >change the K3 bandwidth to 100 Hz and note the S meter reading. It will >be much lower. > >Alan N1AL > > >On 4/14/2013 4:37 PM, Matt Zilmer wrote: >> Hi Alan, >> >> I would guess that running Peak on the P3 and having the S meter on >> the K3 set to PEAK ON should give roughly the same results. Correct? >> Or does the same discrepancy you advised below exist? Peak and PEAK >> ON similarity is what I'm seeing here on the K3 / P3. >> >> 73, >> matt W6NIA >> >> On Sun, 14 Apr 2013 16:19:17 -0700, you wrote: >> >>> Tom, >>> >>> There are several reasons why the signal level can be different on the >>> P3 and K3, as explained in the "How to Set Up and Interpret the P3 >>> Display" section of the P3 Owner's Manual. The main reason is that the >>> effective bandwidth of the P3 is narrower than the K3, so more of the >>> signal gets through to the K3 S meter than a single pixel on the P3 >>> display. For that reason, the signal or noise level on the P3 can >>> appear quite a bit lower than on the K3 S meter. >>> >>> Alan N1AL >>> >>> >>> On 4/14/2013 3:46 PM, cx...@4email.net wrote: >>>> Hello All, >>>> >>>> Question about the Lvl cal operation of the P3. I have noticed a 2 S >>>> unit diff between the K3 and P3. I used the XG-1 to make sure the K3 >>>> was set properly. Using Lvl cal, I noted the default was -5.4 and my P3 >>>> was -9.6. To get a K3 S meter reading of S4 to equal S4 on the P3, I >>>> had to increase the Transfer gain to -30.0! >>>> >>>> This seems excessive. Would appreciate some guidance on how to resolve >>>> this issue. >>>> >>>> 73 >>>> Tom >>>> CX7TT >>>> >>>> >>>> ______________________________________________________________ >>>> Elecraft mailing list >>>> Home: http://mailman.qth.net/mailman/listinfo/elecraft >>>> Help: http://mailman.qth.net/mmfaq.htm >>>> Post: mailto:Elecraft@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@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@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@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@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
