I'd like to be able to calibrate it to 1 uV and 50 uV and know that the noise on the band is -10 or +3 dBuV and that the signal from a friend has gone down to +18 from +26 last week and previous. That requires a calibration, and while one could just use what the rig does naturally as a reference, the K3 has changing SDR code, and maintaining a calibration on a reference source sure does simplify things.
To another objection earlier in the thread, inexpensive test equipment doesn't have selectability to narrow down on a single CW signal. So I'm looking at the firmware only abilities (not hardware) of a K3 to do something that has always been a bear. Other SDR's have it, so I figure Wayne will get to it in time, and I will have a piece of on-the-air test gear that I've never had, and prior to now couldn't get without taking out a mortgage. 73, Guy. David Woolley (E.L) wrote: > > Guy, K2AV wrote: >> beam kind of thing. Although that can be done relatively with the audio >> voltage level, it wouldn't allow me to tell a local that his ground wave >> signal has gone down 3 db and is staying there, or be able to create data >> for studies over time. > > You only require that both measurements be relative to the same > reference, not that the absolute value of that reference be known. 3dB > always represents the same ratio. > > > > -- > David Woolley > "The Elecraft list is a forum for the discussion of topics related to > Elecraft products and more general topics related ham radio" > List Guidelines <http://www.elecraft.com/elecraft_list_guidelines.htm> > _______________________________________________ > Elecraft mailing list > Post to: Elecraft@mailman.qth.net > You must be a subscriber to post to the list. > Subscriber Info (Addr. Change, sub, unsub etc.): > http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/subscribers.htm > Elecraft web page: http://www.elecraft.com > > -- View this message in context: http://n2.nabble.com/Bigger-K3-S-meter-tp1399030p1442359.html Sent from the Elecraft mailing list archive at Nabble.com. _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
