The Anan SDR folks are doing this using an external coupler feeding one of the receivers in the Anan. Google “Pure Signal”, which is their name for the implementation. I think it’s a VK who is doing the firmware. There are a few YouTube videos showing the end result, and it is really impressive. The basic concept is pretty simple, but as always the devil is in the details. Way above my pay grade :^)
Ken K6MR From: 'Stephen Bloom' [email protected] [Elecraft_K3]<mailto:[email protected]> Sent: Thursday, April 20, 2017 11:20 PM To: [email protected]<mailto:[email protected]> Subject: RE: [Elecraft_K3] New from Elecraft: KPA1500 amplifier with built-in ATU, separate power supply Ken: How would one implement this. I know that the real weak spot amongst the high power solid state amps available to the Amateur community has been high IMD, due to what I understand are limits to the existing DMOS chips. Thanks/73 Steve KL7SB From: [email protected] [mailto:[email protected]] Sent: Thursday, April 20, 2017 8:48 PM To: [email protected] Subject: RE: [Elecraft_K3] New from Elecraft: KPA1500 amplifier with built-in ATU, separate power supply The Elecraft folks should be in charge of government secrets… nothing would ever leak :^) One interesting item in the rear panel photo: Tx Sample. Output for “Pure Signal” style IMD improvement using pre-distortion in an SDR radio? Ken K6MR . __,_._,___ ______________________________________________________________ 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]
