Elecraft XV Transverter Owner's Manual - Manual (Page 37)

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the K2 or K3 to display a frequency of either 50000.00 kHz or 432000.0
kHz and ensure that the Menu OFS (Frequency Offset) command is set to
0.00. (Refer to your Rev. 2 and up Firmware instructions for the
procedure). Be sure that SPLIT and RIT are turned off.
Key the rig to produce a steady carrier and adjust the local oscillator
frequency as follows:
XV50: Adjust trimmer capacitor Z6 for a reading of 22.00000
MHz on the frequency counter. Make sure the voltage at TP1
remains between 0.8 and 1.2 VDC.
XV432: Adjust L4 for a reading as close as possible to 404.000
MHz n the frequency counter. Make sure the voltage at TP1
remains between 2 and 3.5 VDC.
Monitor the voltage at TP1 while switching the transverter power on
and off several times to be sure the local oscillator starts reliably.
Using a Received Signal
Turn on power to the transverter and allow the transverter to stabilize
for at least 5 minutes at room temperature (approx. 20 – 25º C).
Set up your external signal source to produce an audible signal as
follows:
XV432: 432.000 MHz.
XV50: 50.000 MHz. If you use an HF rig transmitting into a
dummy load for the signal source, set it at 25.000 MHz to
produce a second harmonic at 50.000 MHz. If it won’t transmit
outside the 12 meter Amateur band, set it for 24.990 MHz to
produce a second harmonic at 49.980 MHz.
Adjust the local oscillator frequency to bring the received signal into
the center of the I.F. receiver band pass. If you are comfortable zero
beating CW signals, you can listen in CW mode and zero beat the signal
against the sidetone.
XV50: Adjust trimmer capacitor Z6. Make sure the voltage at
TP1 remains between 0.8 and 1.2 VDC.
XV432: Adjust L4. Make sure the voltage at TP1 remains
between 2 and 3.5 VDC.
Monitor the voltage at TP1 while switching the transverter power on
and off several times to be sure the local oscillator starts reliably.
XV144 Local Oscillator Adjustment
If you cannot compensate for frequency error using the K2 or K3 Offset
menu command, do the following:
Adjust the slug in L19 so it is flush with the top of the inductor
frame.
Use the K2 or K3 offset (OFS) menu command to correct any
frequency error. If the correction required is more than the 9.99 kHz range
turn the slug into L19 and retry the offset command. Turning the slug
into L19 too far may cause the local oscillator to stop. It may take
several iterations to move the local oscillator frequency within range of
the offset command.
Measure the voltage between TP1 LO LEVEL and ground while
switching the XV144 on and off repeatedly. This voltage is normally
between 1.2 and 1.8 VDC. Verify that the voltage returns to the same level
each time power is switched on, indicating that the local oscillator is
starting reliably
This completes the alignment and testing of your transverter.