K3 power out and displaying bar graphs...

[Robin Kiszka]

Hi

 

I have a K3 running through a KPA500.

I had a QSO and the guy told me my audio was horrific.

The only way I made it acceptable for him and others was dropping my Compression and Mic gain to much lower values, that is 10 for each.

I know I have a low tone in my voice, so I expected the Compression to be much higher, but they say it causes a howling sound on their side.

 

Furthermore, when using the KPA500 for say 300 W PEP I set the PWR to 20 watts. This has the effect that there is basically no deflection on the RF bar scale.

In fact, I can set it to 80 without deflection.

 

Is there some way to get these values recalibrated? I have tried two different MH2 microphones without any difference.

 

Thanks

Robin

OZ6ABM/5P5R

 

______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [hidden email]

[Jim Brown-10]

On 6/14/2020 2:04 PM, [hidden email] wrote:
> The only way I made it acceptable for him and others was dropping my Compression and Mic gain to much lower values, that is 10 for each.

First, the numbers on the readout are MEANINGLESS. What matters is the
indicated compression on the bar graph on voice peaks.

>
> I know I have a low tone in my voice, so I expected the Compression to be much higher,

it has nothing to do with low tones. What you need to do is to FIRST set
TXEQ to -18 for the first three bands and to -6 fourth band, set the top
two bands to about +3, with the others set to 0. Next, set COMP all the
way off (0 setting), then, while speaking into the mic, adjust Mic Gain
for meter indication of full power on voice peaks.Set the display to
show compression, continue to speak, and turn up the COMP knob so that
you see about 10 dB on voice peaks. That's the right setting.

> but they say it causes a howling sound on their side.

Is it possible that you have MON turned up?  Can you listen to your own
transmitter on another radio?

73, Jim K9YC





______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [hidden email]