123
Implementation in Progress: This feature is planned but not yet
complete.
ER01, VFO B band would be too high for RX/TX low-pass filter: If the
sub receiver is on and both receivers are sharing the transmit antenna,
then both are subject to the transmit low-pass filter. Suppose VFO A is
the transmit VFO (i.e., you're not in SPLIT). If you then selected a new
band for VFO B that's too high in frequency, the low-pass filter would
greatly attenuate sub receiver signals. The K4 prevents this from
occurring. To get around this limitation, you can do any of the
following: (1) turn the sub receiver off; (2) go into SPLIT mode first (to
make VFO B the TX VFO), then change the VFO B band; (3) use a
receive-only antenna for either or both receivers.
ER02, KAT4 ATU module required for this operation: If a KAT4
module is installed, set MENU:KAT4 ATU Option to ENABLED to allow
use of [ATU TUNE].
ER03, KRX4 Sub RX module required for this operation: If a KRX4
module is installed, set MENU:KRX4 2ND RX Option to ENABLED. This
will allow the sub receiver to use a different antenna than the main
receiver.
ER04, VFO B freq. would be too high for RX/TX low-pass filter: This is
a more general case of ER01 (see above).
ER05, Transmit gain calibration attempt failed: This error will occur if
a TUNE is performed at 5.0 or 50 W and the transmitter drive required
is out of range. Connect a 50 ohm dummy load, turn the ATU off, and
retry. If it fails at 5.0 W, there could be a problem with the LPA
module (10 W amp). If it works at 5.0 W but fails at 50 W, there could
be a problem with the KPA4 module (100 W amp).
ER06, Not applicable in milliwatt power range: The present
operation only applies during normal operation, not when using
external transverters.
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