Hi Igor,
Very good ideas! Thanks 73 Frank W3LPL ----- Original Message ----- From: "Igor Sokolov" <[email protected]> To: [email protected] Sent: Friday, April 3, 2020 2:53:55 PM Subject: Re: [Elecraft] Transceiver Test Bed at W3LPL Frank, you can add different headphones on Radio#4 to the mix :) Also on SSB try recordings of BY stations to make it more difficult. 73, Igor UA9CDC 31.03.2020 22:44, [email protected] пишет: > > > During the Coronavirus crisis many of us have much more time than > usual for serious technical experimentation and testing. > > I'm building a transceiver test bed and I'll regularly report the progress > of my test setup, procedures and results. The intent of my test bed > is to document the transmitter and receiver performance of modern > transceivers in the intense QRM environment encountered by contesters. > My test bed will not be used to duplicate technical tests such as sensitivity > and dynamic range that are well documented by other expert testers. > > I welcome constructive comments about my test bed, test procedures and > results. > > Hopefully other technically inclined hams will develop similar test beds > so we can compare our test procedures and results. I will share my initial > test results prior to availability of the Elecraft K4. > > Test Description: > > Transceivers #1 and #2 will be QRM generators using two K3 transceivers > with DVRs and stored Morse messages feeding Array Solutions Powermaster > digital wattmeters and individual dummy loads. The QRM generator > transceivers will use various frequencies very close to the frequency of > transceiver #3. The DVRs and CW message memories in the QRM > generator transceivers will store various voice and Morse messages > which will change as the test procedures evolve. The power levels and > frequencies of the QRM generator transceivers will be varied in accordance > with written test procedures. > > Transceivers #3 and #4 will be the transceivers under test. > > Transceiver #3 will be the transmitter-under-test feeding an Array Solutions > Powermaster digital wattmeter and dummy load. Initially they will be > my K3 and FTdx5000 transceivers and my Heil and ModMic microphones. > Transmitter #3 will generate call signs and contest exchanges to be > transcribed > by operators listening to transceiver #4. The frequencies, power level, > callsigns, contest exchanges, microphones and operator controllable settings > (e.g., compression and equalization) used by transceiver #3 will be varied in > accordance with written test procedures. > > Transceiver #4 will be the receiver-under-test connected to a dummy load. > Initially they will be my K3 and FTdx5000 transceivers. The callsigns > and contest exchanges transmitted by transceiver #3 will not be known to > the operator transcribing the audio heard from transceiver #4. A variety of > operators will be invited to transcribe the callsigns and contest exchanges > they hear on this transceiver. > > 73 > Frank > W3LPL > ______________________________________________________________ > 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] ______________________________________________________________ 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]
