[Elecraft] SSB Features of the KX2 & KX3 You May Have Overlooked...

[Gerry leary]

Hello everybody, I have found that at least in my KX three the equalizer settings appear to be negated when I turn compression on. Even if I set them really strangely with compression off, it goes back to whatever it was when I turn compression on. So I guess what I’m trying to say is no matter what I do with the equalizer, compression seems to negate it.

Sent from my iPhone this time 

On Dec 4, 2018, at 10:14 PM, Jim Brown <jim at audiosystemsgroup.com> wrote:

Speech compression and EQ to get rid of the lower octaves of speech is a wonderful thing, and can increase "talk power" significantly. My starting point with TXEQ for maximum talk power is max cut of the three lowest bands (-18dB), 6 dB cut of the fourth band, 3-6 dB of boost on the top two bands. Do that BEFORE setting compression.

But EXCESSIVE use of compression can be a very BAD thing. I'd be very cautious about using more than an indicated 1-2 dB on voice peaks.  It should NOT be adjusted to a certain number on  the CMP readout, but rather to the meter that shows gain reduction.

Once these settings are done, get signal reports from trained listeners, and tell them to set their RX bandwidth fairly wide.

These two settings -- good low cut of voice frequencies and 10 dB of compression can increase talk power by 13 dB. That's multiplying your effective TX power by 20!

73, Jim K9YC

> On 12/4/2018 7:45 PM, Wayne Burdick wrote:
> Speech compression can add a lot of "punch" to your low-power signal, bringing up average voice power. As with the K3/K3S, our KX-line compression algorithm is exceptionally clean. Use the CMP switch on the KX3 (TX CMP menu entry on the KX2) to dial in compression of up to 30 dB.
> 
> 
> *** Receive and Transmit EQ ***
> 
> 8-band graphic equalizers (MENU:RX EQ and TX EQ) can be used to tailor the receive and transmit audio to your liking.


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