K3 LINE IN Level Adjustment

[Mike K2MK]

When I operate RTTY I find a LINE IN level of 3 gives me 4 ALC bars. When I operate voice and use the WriteLog voice keyer I find a LINE IN level of 10 works best for 5 to 7 ALC bars. When I switch between voice and DATA modes the level stays where it was last set. It doesn't remember the different setting for voice or DATA. Is this correct or is there something I need to configure differently?

73,
Mike K2MK

[KK7P]

Line In is not saved by mode, so it is operating as designed.

73,

Lyle KK7P

> ...When I switch between voice and DATA modes
> the level stays where it was last set.

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[Dale Parfitt-3]

 This relates to the APF in the FT-2000 but  has additional useful
information on APF in general :

http://www.ac0c.com/main/page_ft2k_roofing_filters_ft2000_dsp_filters.html

Dale W4OP

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[Jim Brown-10]

On 11/1/2010 8:54 AM, Mike K2MK wrote:
> Is this correct or is there something I need to
> configure differently?

The condition you describe suggests that the sound card output level is
too high for RTTY, which, depending on the sound card, could increase
distortion. If I were you, I would reduce the output drive of the sound
card by 3-6 dB. That should be done with the playback volume controls
for the sound card.

That said,  It would be very nice if the K3 firmware could remember
different settings for SSB and digital modes.

73, Jim K9YC
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[K2QI]

I find that when my PC's line out is set to 50 percent, and line in on K3 is set to about 8 or 9, I get 4-5 bars ALC.

James K2QI
------Original Message------
From: Mike K2MK
Sender: [hidden email]
To: Elecraft Reflector
Subject: [Elecraft] K3 LINE IN Level Adjustment
Sent: Nov 1, 2010 11:54


When I operate RTTY I find a LINE IN level of 3 gives me 4 ALC bars. When I
operate voice and use the WriteLog voice keyer I find a LINE IN level of 10
works best for 5 to 7 ALC bars. When I switch between voice and DATA modes
the level stays where it was last set. It doesn't remember the different
setting for voice or DATA. Is this correct or is there something I need to
configure differently?

73,
Mike K2MK
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[Mike K2MK]

Based on your recommendations I did reduce the output of the sound card at the PC. It was at 100 and now is at 50. This does provide for an easier adjustment on the RTTY signal. My K3 Line In levels are now 9 for RTTY and 20 for SSB from the WriteLog voice keyer. As Lyle indicated, there is no memory for Line In level per mode so I'll just have to remember to change the K3 level when I switch modes. Alternately I could change the sound card levels when I switch modes.

73,
Mike K2MK

Mike K2MK wrote

When I operate RTTY I find a LINE IN level of 3 gives me 4 ALC bars. When I operate voice and use the WriteLog voice keyer I find a LINE IN level of 10 works best for 5 to 7 ALC bars. When I switch between voice and DATA modes the level stays where it was last set. It doesn't remember the different setting for voice or DATA. Is this correct or is there something I need to configure differently?

73,
Mike K2MK