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Thursday, 7 May 2015

Whats going on here then - Part II


Following my musings about the really pants audio bandwidth from the Yaesu SCU-17 back here:

I've found an old external USB soundblaster soundcard thingamabob and hooked it up to my PC with the audio in and out directly to the PKT jack on the FT-DX5000 (the same connector the SCU-17 uses for audio to and from the radio).

Here's the comparison between the two:

So the old battered USB soundcard has a completely flat audio response, the SCU-17 is totally pants. I am rather horrified at the frequency response from this expensive Yaesu unit - I don't think it's even fit for purpose!

What  load of Dingos Kidneys.

Local conditions.

1 comment:

  1. This explains why I constantly have to chase the TX gain control on JT-65 and PSK-31. Quite frankly, I am tiring of jumping out of my chair at the computer desk and running over to the rig when the ALC is active. Thanks for running this test, I was looking int trying this experiment myself. I found a sweep test and the VU in the digital domain on my PC shows a constant level for the sweep.

    73 KE8DAF