Hi Hank,
While intuitively it would seem that WSPR is a viable method for performing antenna evaluations, extreme short term variability of the ionosphere makes it into a heroic task... The only viable method I've found -- and it works very well -- is to install a reference antenna within about 1/2 wavelength of the antenna under test, it MUST have the same polarization as the antenna under test and ideally -- to avoid interactions -- neither antenna should "look through" the other. In almost every case -- unless you have local RFI issues -- evaluations performed using your receiver produce nearly identical results as using your transmitter. 73 Frank W3LPL ----- Original Message ----- From: "HP" <[email protected]> To: [email protected] Sent: Sunday, January 5, 2020 9:54:28 PM Subject: [Elecraft] K3 as WSPR transmitter I see the lore is that the LPA does not care for long key down periods - I was toying with using my K3 as WSPR tx on 160 and 80 fpor some antenna evaluations. . The lore would say its not a good idea ? The manual is not clear to me of whether in fact there is a 160 low level out I could use for a home brew external amp -The KIO3 transverter bands show 160 coded -but other tables talk about just IF of 7 mhz and above. BUT its all moot of the LPA is still biased on and limited in key down time ????? Hank K7HP ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
