If you are questioning how to best adjust L34 - "I.F. Amplifier Alignment" section of "Alignment and Test Part II," I used Spectrogram. I had meant to put this hint on the reflector long ago and keep forgetting.
Follow the instructions for "I.F. Amplifier Alignment." When you get to the last step plug the PC sound card into the Speaker Jack (not Headphone as it attenuates some high frequencies). You will notice some noise spread across the spectrum displayed. Make sure the XFIL is set for FL-1 OP-1. Now continue to adjust L34 for a compromise of the lowest displayed noise and the highest level of the tone. You will find a point where the noise is almost non existent. Even though I had adjusted this to what I thought was the best by "ear," after using this method and then re-adjusting the ARC threshold. I was amazed at the difference in sensitivity and audio level. Maybe this is one of the problems/reasons some people complain about "low output volume." Rich KE0X Hi Folks, Is there any soundcard software to assist in optimum tuning for best sig/noise on SSB, similar to a SINAD meter ?. thanks -- _______________________________________________ Elecraft mailing list Post to: [email protected] http://mailman.qth.net/mailman/listinfo/elecraft You must subscribe to post. Subscriber Info (Addr. Change, Unsub etc): http://mailman.qth.net/subscribers.htm Elecraft page: http://www.elecraft.com
