[Elecraft] Transceiver Test Bed at W3LPL

[Igor Sokolov]

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, donovanf at starpower.net 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
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