[Elecraft] K3 sub-RX problem with 4.51 beta

[Brian Machesney]

While downloading the 4.51 beta "suite" to K3 s/n 2435 (original DSP
board), I heard very loud audio "artifacts" in headphones. The first time I
turned on the KRX3 after the download was complete, there was only a single
high-frequency audio tone in the right headphone carrying KRX3 audio. Now,
turning on the KRX3 produces only a very strong wideband audio noise, again
only from the right headphone carrying the KRX3 audio.

The problem disappears after dropping back to the 4.48 firmware "suite,"
though the audio level from the KRX3 is now noticeably lower than from the
main RX.

Brian K1LI