124
ER07, ATU is bypassed: Hold [ATU] switch to enable the KAT4 for
auto-tuning, then retry.
ER08, TX ALC required for this operation: Set MENU:TX ALC to On,
then retry.
ER09, TUNE not allowed with current configuration: This error may
occur if a TUNE operation is attempted outside of any allowed band.
ER10, Auto-tuning not allowed in ATU test modes: Set MENU:KAT4
ATU Option to ENABLED to allow use of [ATU TUNE].
ER11, Transmit is locked out: The transmitter may be disabled due to
a persistent key-down condition at power-up, or because of a transmit
inhibit signal (ACC jack).
ER12, SET command incompatible with target VFO's mode: An
external host application or macro has sent the K4 a SET remote
control command that does not apply to the current operating mode.
ER13, GET or SET command not implemented: An external host
application or macro has sent the K4 a SET remote control command
that has not been implemented.
ER14, KPA4 module required for this operation: If a KPA4 amplifier
module is installed, set MENU:KPA4 PA Option to ENABLED. If not,
then power can not be set higher than 10 W.
ER15, KPA4 set to 'Bypassed' in menu: Set MENU:KPA4 PA Option to
ENABLED to allow power to be set higher than 10 W.
ER16, KPA4 module 12 VDC missing: Check the fuse on the KPA4
module. This is a standard 25 amp blade fuse available from Elecraft or
auto parts stores. The recommend replacement is Elecraft E980427
(Littlefuse part number 0287025.PXCN or Digikey F4195-ND).