[Elecraft] K4 LF & MF, K4 EXREF?

[eric norris]

Will the K4 transmit at 136 or 472 kHz, and if so at what power level and through which antenna port?  If so, at first ship or in the future?
The K4 brochure shows an empty hole for XREF, will this be available at first ship or in the future, and will it require an option board?  
My apologies if these questions have already been answered and I missed them.
73 Eric WD6DBM

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