Elecraft XV Transverter Owner's Manual - Manual (Page 24)

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1/2” SCREW
BOTTOM COVER
HEAT SPREADER
PCB
FLAT WASHER
LOCK WASHER NUT
THERMAL
CONDUCTION
PADS
RF POWER
AMPLIFIER
MODULE
Figure 14. RF Module Mounting Hardware.
Configure the local oscillator power jumper, JP9, as desired (see page
16 for details). Normally you will want to place the jumper on JP9, pins
4-5. This will supply power to the oven whenever there is +12 volts at the
rear panel connector, even if the transverter power is off. This will keep
the oven and crystal warm and ready for operation at any time.
Replace the top cover and tighten the four corner screws to secure it.
Changing Between Split and Common Antennas
Your transverter may be configured to work with either a common
transmit and receive antenna or with separate transmit and receive
antennas. The procedure requires removing or installing a relay and two
jumpers. The relay and jumpers are located in the upper left corner of the
RF PCB, near ANT connector J1. Make the change as follows:
Remove the four screws and the top cover to gain access to the top of
the RF PCB.
i
In the following step, you will remove the 4-40 nuts holding
the long screws at each end of the RF power module. Do not allow
the screws to fall out of the bottom of the transverter.
Remove the 4-40 nut and lock washer on either end of the RF power
module.
Invert the transverter so the bottom side is up. Place it on a clean
surface to avoid scratching the paint.
Remove the four corner screws holding the bottom cover.
Carefully lift the bottom cover off of the transverter. The two long
screws that secure the RF power module should come out with the
bottom cover. Be careful not to disturb the flat washers between the RF
amplifier module and the PCB. If one does slip out of place, reposition it
(See Figure 14).
Remove the two long screws from the bottom cover and replace
them through the holes at each end of the RF power module. Replace the
nuts finger-tight to keep the washers and module in place while you work
on the RF PCB.
If you are switching from a common antenna to split transmit and
receive antennas, do the following. Otherwise skip this step.
Desolder and remove relay K1.
Install jumper W2. It is shown on the silkscreen on the top of the
RF PCB next to the outline for K2 directly behind J8 (AUX).
Install jumper W3 between the solder pads shown in the space
where relay K1 was sitting. Be sure to elevate W3 off of the PCB
enough to avoid shorting to the solder pad underneath it.
Trim the excess wire for both jumpers on the bottom of the PCB.
Store the relay in a safe place in case you want to reinstall it at
some future time.