My Go Box
Rig Control Logging PC
I don’t usually use the XPA20 Amplifier, only if I have to in critical situations. Otherwise, I stick with QRP operations. To tune the antenna, I set the rig to CW and press the tune button on the Z100 antenna tuner. If the amplifier is on, the tuner won’t activate the amp but merely bypasses it and the X1M only uses 5 watts.
The X1M has its own constant voltage regulator module in the go box which prevents the fluctuating load of the XPA20 from modulating the 12v input of the X1M.
The battery control box atop the battery is a heavily filtered buck up-converter to regulate the output voltage to 12.6V regardless of the battery pack’s voltage level. The system will shut down if the battery voltage falls below the battery’s minimum specified load voltage.
The battery box shown is from an old Panasonic telephone PBX and has three bridged 7 Ah led acid batteries with protection diodes and fuses. The original built-in charging circuit is used to charge the three batteries.
SteveS September 17, 2017