On Mon,11/17/2014 10:22 AM, David Ahrendts wrote:
In other words, will 500 watts with a 2.6MHz signal be more effective
(stronger, punchier, more DBs transmitted) than 500 watts with a 4MHz ESSB
signal?
Change those MHz to kHz. :)
The answer is "YES, MUCH stronger and punchier, more dB transmitted"
with limited bandwidth. The difference is roughly one S-unit. A big part
of the difference comes not from the high end, but from the low end. For
best communications quality, go to TXEQ and set the three lowest bands
for maximum cut, set the fourth band (400 Hz) to -6dB cut, and get
signal reports. For most ham mics and voices, leave the rest of the
bands flat. For mics or voices that sound a bit dull or deep, boost the
top two bands by 3-6 dB. Professional mics will require more boost on
the high end.
We can also increase our talk power by using the compression built into
the K3. Set it so that you see no more than 6-10 dB compression on
peaks, using the compression display.
73, Jim K9YC
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