Re: [Elecraft] K3 Transmiter IMD figures
G'morning(here), Keith: You can look at an email from Wayne on this subject here. http://n2.nabble.com/re%3A--ARRL-K3-review-for-Apr-QST-posted--TX-IMD--td462836.html#a462836 73, Ken K3IU Keith Bainbridge wrote: A friend has commented that in the ARRL test the IMD figures for the tx chain of -27dB were pretty poor. I'm sure there was discussion about this at the time the report was released but a search of the archives hasn't revealed it to me. Can anyone point me in the right direction so I can explain the results to him. Many thanks 73 Keith ___ 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
Re: [Elecraft] K3 Transmiter IMD figures
Keith Bainbridge-2 wrote: > > A friend has commented that in the ARRL test the IMD figures for the tx > chain of -27dB were pretty poor. I'm sure there was discussion about > this at the time the report was released but a search of the archives > hasn't revealed it to me. > Can anyone point me in the right direction so I can explain the results > to him. > I think the reference you are looking for is this: http://www.mail-archive.com/elecraft@mailman.qth.net/msg50667.html . Subsequently I believe it was found that in the version of firmware used, the speech compressor was not being bypassed when the control was turned to 0. This added sufficient extra distortion to cause the -27dB figure that was quoted rather than the -30dB that Elecraft expected. - Julian, G4ILO. K2 #392 K3 #222. http://www.g4ilo.com/ G4ILO's Shack http://www.ham-directory.com/ Ham Directoryhttp://www.g4ilo.com/kcomm.html KComm for Elecraft K2 and K3 -- View this message in context: http://n2.nabble.com/K3-Transmiter-IMD-figures-tp793796p793818.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
[Elecraft] K3 Transmiter IMD figures
A friend has commented that in the ARRL test the IMD figures for the tx chain of -27dB were pretty poor. I'm sure there was discussion about this at the time the report was released but a search of the archives hasn't revealed it to me. Can anyone point me in the right direction so I can explain the results to him. Many thanks 73 Keith -- Keith VK6XH / VK6DXR Chairman WIA VK6 Advisory Committee. Northern Corridor Radio Group Inc VK6ANC ___ 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
