ELECRAFT K3 Owner's Manual download pdf (Page 87)

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2 TONE [T] OFF (Troubleshooting) Enables built-in 2-tone generator for SSB

transmit tests. The internal 2-tone generator only works if

LSB or USB mode is selected. After setting the tone ON, exit

the menu and tap “XMIT”. You can use [MIC] to adjust the

amplitude of one of the tones; the other’s amplitude is fixed.

ADC REF [T] 5.01 Allows calibration of the voltage reference used by the K3 to

measure and display certain values, such as the rig’s supply

voltage. (Optional.) First, disconnect anything attached to the

ACC jack. Next, locate the

ADC REF

menu entry. It will initially

show 5.00 volts as the reference voltage. Using a DMM set to

DC volts, measure the actual voltage at pin 2 of the ACC jack.

This must be done while the ADC REF parameter is being

displayed. (Note: The (-) probe of the DMM should go to the

K3’s chassis ground, e.g. at the GROUND lug.) Finally, use VFO

A to set the

ADC REF

menu parameter to what you measured at

pin 2.

AF GAIN HI Sets the AF gain range. Available selections are HI

or LO

AF LIM nor 030 (Advanced) Ad

ustable AF output limiter for use when “AGC” is

turned off. This can protect your ears if a large signal appears.

Signals or noise above the threshold will sound highly distorted

due to the limiting action, reminding you to back down the “AF”

or “RF” gain. Typical settings for those who often turn “AGC”

off are 17 to 23. Available selections are 001 to 030

AFSK TX FIL On If set to FIL ON, A 400 Hz transmit audio filter is added (via

DSP) in order to maximize transmit signal to noise ratio. This

may be useful in high noise computer environments. This

applies only to AFSK-A mode (RTTY).

AFV TIM [T] 1000 (Advanced) Integration time for AFV and dBV displays in ms.

See also VFO B alternate display information.

AGC DCY Soft Available selections are Normal and Soft

AGC decay characteristic; applies to both fast and slow AGC.

NOR selects traditional linear decay. The SOFT setting can

reduce IMD caused by traditional AGC, and is especially useful

in “pileup” conditions, in some cases making it unnecessary to

turn AGC off. Also see

AGC HLD,

below, which can reduce AGC

IMD even further.

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ELECRAFT K3 Owner's Manual Page 87

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