[Elecraft] ESSB

[Jim Brown]

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