XPA125B FCC Certification

| julio 28, 2018

100 W Solid-State Linear Power Amplifier

XPA125B FCC Certification

This device complies with Part 15 of the FCC Rules.Operation is subject to the following two conditions:

(1)    This device may not cause harmful interference, and

(2)    This device must accept any interference received, including interference that may cause undesired operation.

–    RF power amplifier with inbuilt antenna tuner (ATU).

Test procedures according to the technical standards:

EMC Emission

Standard Test Item Limit Judgment
FCC Part15B Conducted Emission Class B PASS
ANSI C63.4: 2014 Radiated Emission Class B PASS


  • Maximum RF output power of 125 Watts.
  • Auto tuning function.
  • Wide frequency range of0.5-50 MFIz.
  • Flarmonic suppression of 39 dB
  • Maximum output power can be automatically regulated via the ALC control when used with an X108G or X5105 transceiver

XPA125B Specifications


Frequency range: 1.0 – 55 MHz

Maximum output power:

  • 1.8 – 30MHz >110W
  • 50 – 54MHz >90W

Maximum operating ambient temperature: 55°C Gain: 13dB (±2dB)

Supply voltage: 12 – 14.5 V DC

Current draw @ maximum output:

Standby: 260 mA @Max Transmit: 30A @Max


Tuning frequency range: 1.8 – 30 MHz/50 – 54 MHz Maximum tuning range: 14 – 500 Ohm.

Product specifications:

Dimensions: 260 x 150 x 100 mm (not including control knobs, feet, handles, etc.) Weight: 2.66 Kg(host only)

Rear panel layout:

XPA125B FCC Certification

6    DC IN Power supply socket:

The XPA125B requires a 12 – 14.5 V DC supply

7    ANT Connector:

The ANT socket is connected to the antenna, the connector model is SL16-K.

8    FUSE Holder:

Internal fuse holder. Fuse rating is DC 30A.

9    Ground

10    ACC socket:

The data interface connections are as follows:

XPA125B FCC Certification

PIN1: NC PIN4: ALC input
PIN2: PTT Signal input PIN5: NC
PIN3: Band voltage input PIN6: GND

11 TRX Socket:

The TRX interface is connected to the transceiver output, the connector model is SL16-K.

12 Comm interface:

This interface is for XPA125B firmware updates and connection to a PC.

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