Elecraft K60XV Manual - Manual (Page 18)

18
Transverter Operation
Basic transverter use: The K2 acts as a high-performance I.F. transceiver for nearly any type of
transverter, and is especially flexible with the K60XV installed. The K2's T R N x menu entries allow you
to specify the RF band to be displayed, your choice of five I.F. bands, and per-band settings for frequency
correction, transverter selection, and power output level. If you have never used transverters with the K2
before, you should familiarize yourself with the transverter band setup information in the K2 Owner's
Manual (in the Secondary Menu Functions section). If you're using Elecraft XV-series transverters, please
also review their manuals for instructions regarding K2-related connections and configuration. (Some
information in this manual may supercede that in the XV-series manual.)
Transverter bands and frequencies: You can define up to 6 transverter band displays. Once enabled, they
will appear above 10 meters in the band rotation. To set them up, use the T R N 1 -T R N 3 secondary menu
entries. (T R N 4 -T R N 6 use the same three entries, but are accessed by tapping
AN T 1 / 2 .) Each T R N x
menu entry has a number of fields, accessed by tapping D I S P L AY . The R F field can be set from
0 through 9 9 9 . For bands over 999 MHz, enter only the low-order MHz digits (e.g., for 1296 MHz, use
2 9 6 ). The IF field can be set to 7 , 1 0 , 1 4 , 2 1 , or 2 8 MHz. The O F S field can be used to specify an
oscillator/multiplier chain correction of up to +/- 9.99 kHz. (See below for details on other fields.)
Transverter selection and control: Using the A D R (address) field of the T R N x menu entries, you can
specify which specific Elecraft XV-series transverter should be enabled when you switch to each
transverter band display. This is especially useful with the XV144, which is often used as an I.F. for
multiple microwave bands. XV series transverters include an address selection switch that must be set up to
match the value in the A D R field. (Refer to the XV series manual for details.) The K60XV also outputs
the binary value of the A D R field on three pins of J2 for use with transverters from other manufacturers.
These signals must be externally bypassed and buffered if they are to be used for transverter control. Note:
The Elecraft KRC2 universal band decoder also decodes the A D R value, and provides numerous relay
drive outputs for use with transverters or other gear.
Transverter keying: Elecraft XV-series transverters are keyed via the 8R line, available via the AUX I/O
connector on either the KIO2 or KPA100 module. Third-party transverters can be keyed via an external
hardware interface derived from the 8R line. An alternative, if relay drive requirements are low, is to use
the K60XV's built-in transverter keying device (a 2N7000 MOSFET). The keying signal is available on J2.
Using low-power and high-power transverter I/O: The T R N x menu entries' O U T parameter has a dual
range: L 0 . 0 1 - L 1 . 2 7 (milliwatts) and H 0 . 1 - H 1 2 . 7 (watts). In both cases these are upper limits, and
the POWER knob can be used to go down from there. Low-power (0.01-1.27 mW) settings require the
K60XV option. (The low-power detector works best if you avoid POWER settings under 0.10 mW.) The
low-power
T U N E display shows, for example, P 1 . 0 0 L P , where 1 . 0 0 is the power in mW and L P
indicates that the low-power output on the K60XV is selected (high-power path disabled). Full-scale on the
bargraph is 1.0 mW in L P mode. The H settings specify that the K2's normal high-power path should be
used, along with an upper limit from 0.1 to 12.7 watts.
100's of MHz digit: If you select 10 Hz VFO steps on a transverter band whose RF parameter is set for 100
MHz or higher, the 10-Hz digit is only shown for 1 second, then the display shifts to the right. This allows
the hundreds of MHz digit to always be displayed.