Elecraft XV Transverter Owner's Manual - Manual (Page 19)

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Using an External Receive Preamplifier
An external receiver preamplifier is sometimes mounted at the antenna to
offset transmission line losses and provide the best possible system noise
figure.
When using an external receive preamplifier, you may want to reduce the
transverter receive gain to maintain the best possible system dynamic
range. A procedure for reducing the transverter receive gain without
adversely affecting the noise figure is described in Reducing Receive Gain
to Preserve System Dynamic Range on page 21.
If the external preamplifier does not provide a bypass switch when
transmitting, separate transmit and receive antennas and transmission
lines are required as shown in Figure 12. In this case, the transverter
needs to be wired for separate transmit and receive antenna connections.
See Changing Between Split and Common Antennas on page 20.
PREAMP
TX RX
TRANSVERTER
ANT AUX
Figure 12. Using an External Receive Preamplifier Without Transmit
Bypass Capability.
Using an External Power Amplifier
The transverter may be used to drive an external power amplifier as
shown in Figure 13.
 The external power amplifier must present an SWR of less than
2:1 to the transverter output.
 The external power amplifier must key with a closure to ground
and present less than +200 volts to the transverter KEY OUT
connector during receive.
See Changing Between Split and Common Antennas on page 20 for
instructions on rewiring the transverter RF outputs as needed.
TX KEY
TX & RX RF
TRANSVERTER
ANT
EXTERNAL
POWER
AMPLIFIER
w/TR switching
TRANSVERTER
TX KEY
TX RF
RX RF
ANT AUX
EXTERNAL
POWER
AMPLIFIER
SINGLE RF PATH TRANSMIT AND RECEIVE:
SPLIT RF PATH TRANSMIT AND RECEIVE:
Figure 13. Using an External Power Amplifier.