FlexRadio Systems FLEX-5000 Series, Owner'S Manual

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H A R D W A R E I N S T A L L A T I O N C H A P T E R 1
(1) Primary Antenna Ports (ANT1, ANT2 & ANT3)
Three SO239 antenna ports that can be software selected on a per band basis and assigned as either
receive, transmit or both.
(2)-(3) Receive Only Antenna Ports (RX1 IN & RX2 IN)
Up to two additional receive only antennas can be connected, each of which is separately selectable on
a per band basis.

RX1 IN is the receive only antenna port for the first receiver.

RX2 IN can be used to connect a receive only antenna to the optional second receiver
1
.
(2) External RX1 OUT to RX1 IN Receive Loop
With PowerSDR a dedicated receive path can be selected by band so that all of the receive signals input
to either ANT1, ANT2 or ANT3 are output to the RX1 OUT port and input back into the RX1 IN port.
This enables the insertion of external signal enhancing devices such as preamps, filters and
preselectors, without requiring complicated switching mechanisms to avoid transmitting through them.
(4)-(5) Dedicated Transverter Connections
The FLEX-5000 has been designed to support transverters through both a 28MHz and/or 144MHz IF
interface.

XVTX/COM outputs a 28MHz IF signal, adjustable up to +5dBm to drive external transverters

XVRX accepts a 28MHz IF signal from external transverters. If your transverter does not have
a separate IF output, then only use XVTX/COM

144MHz is the output of the optional, internal transverter.
(6) 13.8 VDC Power Socket
The FLEX-5000 requires a stable 13.8 VDC power source rated for at least 25 Amps and 30 Amps peak
for proper operation. Supplied with your radio was an unterminated 4-pin keyed Molex type power
connector and cable set. Terminate this cable in the appropriate connector (if needed) for your DC
power source such as Anderson PowerPoles®, banana plugs, spade or ring lugs, or tinned ends for
screw terminals. Connect the 2 red wires to the positive terminal and the 2 black wires to the negative
terminal of your power supply
2
. The Molex type connector is inserted into the white Molex receptacle
labeled -13.8 VDC+.
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1
Second receiver is standard with the FLEX-5000D
2
Older radios may have only 1 red and 1 black wire, which are connected to the + and – terminals respectively.
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2003-2008 FlexRadio Systems