John has a very nice website, but
he for got to put in a link
http://www.w5gi.com/sdr.htm
I created the data bases for different operating conditions, i.e.
conventional audio, DX, enhanced single sideband, and hi-fi [wide]
single sideband.
The purpose of providing these databases is to provide the user with
some idea of typical settings for different conditions. Actual settings
will depend on YOUR voice and external audio equipment.
My external audio gear consists of a Heil PR40 [any mic with a response
of at least 50-10,000 Hz can be substituted], a Behringer UB 802 Mixer
[almost any mixer will work] and an inexpensive Radio Shack reverb unit.
I use the Mixer 3 band EQ to establish a base level audio sound and the
SDR Graphic EQ to alter this sound to achieve the type audio desired for
each mode. The reverb is used to enhance "presence" and "clarity".
But most important of all- I set my output level controls [on the mixer
and in the SDR control panel] so that my ALC reading is always between 0
and 5 db. This is critical a parameter. If ALC readings are too
low-power output will be down, if too high-you get distortion.
If you elect to use my databases, be sure to use your PA settings,
otherwise, your power may be too low or high.
73, and good luck.
John
W5GI
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