Bob,
It sounds like your KX3 is "power hunting". The KX3 (and other Elecraft
transceivers) control power differently than any other amateur
transceiver, so you must ignore the common internet (and many data mode
instructions) in how to set up the KX3 for data modes.
Do you have sufficient audio into the KX3 on 15 meters? You should
drive the audio enough to produce 4 bars with the 5th bar flickering on
the ALC meter. Since the RF Gain can vary from band to band, you really
should check the level on each band.
Check out the document on my website www.w3fpr.com. Scroll down to the
bottom of the left column for the link to the page.
Ignore the internet advice and set your KX3 properly for audio, and then
control the power with the power knob.
73,
Don W3FPR
Refer to the document on my wesite
On 9/30/2017 7:48 PM, R Edward wrote:
I have an odd issue that is only happening on 15 meters, and I notice it most
in digital modes because they are 100% duty cycle. My first transmissions on
the band are at reduced power from my power setting (usually 5 W), but the
indicated output slowly builds over 2 or 3 transmission cycles to reach my
selected power. The antenna is tuned beforehand with a 1:1 SWR, and my mic
gain/ALC settings are all normal.
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