Elecraft K60XV Manual - Manual (Page 19)

19
Important Operating Notes
1. Using the KPA100 on 60 meters: Recent KPA100 kit modifications (revision C) allow high-power
operation on 60 meters. However, these changes do not include a revised 80-meter low-pass filter. For 60
meters, you’ll still use the KPA100’s 30/40-meter low-pass filter. For this reason, you must leave the K2’s
D 1 9 menu parameter set for P A 6 0 = 4 0 (see K60XV manual).
2. Using TUNE mode with the K60XV and an ATU: If the ATU is in either of its autotune modes
(A U T O or A L T ), and you’re on a transverter band configured for LP mode (Low Power, 0 dBm), holding
TUNE drops power to 0.2 milliwatts maximum. You can override this behavior by holding
D I S P L AY
along with TUNE, or by selecting any ATU mode other than A U T O or A L T in the menu.
3. KAT2 modification for use with K60XV LP mode: In some cases the LM358 op-amp on the KAT2
can load down the K60XV's low-power RF detector (at the emitter of Q2), preventing the K60XV from
developing a full 0 dBm (1 milliwatt) signal at the transverter OUT jack. To correct this, change R6 on the
KAT2 from 47 ohms to 470 ohms. This resistor is supplied with the K60XV kit. R6 is on the bottom of the
KAT2 control board, and can be changed without removing the KAT2 module.