Content provided by Tom, W4TMW
The information provided below can be used to Interface an Elecraft XV144 transverter to a FLEX-6300
The FLEX-6300 can only be connected in a simplex or common IF configuration, where the FLEX-6300 XVTR connector is used for both RX and TX and is connected to the XV144 TXin (IF1).
Connect the TX Relay (TX) to the XV144 Key In connector with a standard RCA mono audio cable.
SmartSDR Transverter Form Configuration
Here are the SmartSDR Transverter form setting to create the 144 band to interface a FLEX-6300 (common IF) with a Elecraft XV144 transverter.
RF Freq. : 144.000
IF Freq. : 28.000
LO Freq. : 116.000
LO Error : -3000 ( yours might vary)
RX Only: Disabled
Max Power (dBm): 0.1
RX Gain dB: 0.0
Elecraft XV144 Settings
Inside the XV144 you need to be sure your settings are as follows:
Step #1 - Jumper settings
On the front panel of the xvtr - JP-1... Short
Step#2 - Dip Switches
sw-3 ...set all positions to OFF
Step #3 - Adjust for XV144 output power
Adjust R22 ......as described below
With your XV144 interfaced to the FLEX-6300 and connected to a dummy load, key the Flex with power set to some mid level (mine is set to 70), then while watching the LEDs on the XV144. adjust R22 until the yellow LED just comes on.