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HP041-125ADG-A10 RF Driver product image


With an operating frequency of 40.68 MHz, a 125 W output into a 50-ohm load, and analog and digital modulation.

Full Product Description
RF output power:
Max: (adjustable): > 15 W/mm² *, Adjustment range: < 1 … >125 W
RF output frequency:
40.68 MHz
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Product description

Water cooling parts made from copper ensure the highest standards for corrosion protection.

Optimum EMC shielding and mechanical protection are achieved by an aluminium casing and conductive surface passivation.

Key features

  • RF output power up to 125 Watt
  • Copper water-cooling path
  • Constant output power design
  • High SWR and overheat safety shutdown
  • Compact casing, fully shielded (EMC)


DeviceAO Modulator
Supply voltage+24 VDC
Supply currentMax: 12.5 A @ 125 W RF output power
RF output powerMax: (adjustable): > 15 W/mm² *, Adjustment range: < 1 … >125 W
Output impedanceNom: 50 Ω
RF ON / OFF ratio> 50 dB
Analogue modulation impedance600 Ω
Analogue modulation voltage range@ 50 Ω: 0 … +10 V. The voltage range corresponds to 0 to 100% of the potentiometer pre-adjusted max RF output power.
Digital modulation4.7 kΩ (pull-up)
Digital modulation impedanceHigh = ≥ 3V … 5V (= RF on)
Digital modulation levelLow = 0 … < 2V (= RF off)
Maximum modulation frequency1 MHz (digital and analogue)
RF output frequency40.68 MHz
Harmonics distortion< -30 dBc *
Rise/fall timeAnalogue modulation: < 80 ns (10 … 90%) *, Digital modulation: < 80 ns (10 … 90%) *

* into 50 Ω load

Connectors, Cooling, Dimensions, Weight

RF output connectorBNC female
Control connectorD-Sub 25-pole, female for pin assignment refer to section Control Connector
Power supply cords2x 750±50 mm H07V-K 1.5 mm²
red (or yellow)+ Vs (24 VDC)
black (or violet)CGND (case ground)
CoolingWater cooling. Cooling block material: Copper, 2 x G 1/4’’ thread fitted with 6mm push in connectors.
Flow rateMore than 1 litre/minute at less than 25˚C
Dimensions [mm]200 x 100 x 52.5 (length x width x height)
Weight1470 grams
Environmental Conditions
Warm up time10 minutes for optimum stability
Operating case temperature< +50°C, safety shutdown at ≈55°C
Storage temperature-20°C … +65°C, non condensing
Absolute Maximum Ratings
Supply voltage max.+26 VDC
Analogue modulation-0.5 V … +11 V
Voltage range @ 0 … +10 V
Digital modulation
Level-0.5 V … +5.5 V
Maximum operating temperature+55°C heat sink / base plate temperature

Control Connector

D-Sub 25-pole, female

Any signals refer to chassis ground (CGND) unless denoted differently.

Pin assignment
Pin 1RF ON status (out)Pin 10Modulation Ground (MGND)
Pin 2SWR fault indication (out)Pin 11Analogue modulation 2 (ref. MGND)
Pin 3Driver temperature fault indication (out)Pin 12Analogue modulation 1 (ref. MGND)
Pin 4Reset SWR fault / Init (in)Pin 13Power Level Select (ref. MGND)
Pin 5Interlock 2 fault indication (out)LOW → select Analogue Mod. 1
Pin 6Interlock 2 (in)HIGH → select Analogue Mod. 2
Pin 7Interlock 1 (in)Pin 14…22Chassis ground (CGND)
Pin 8Interlock 1 fault indication (out)Pin 23…24Modulation Ground (MGND)
Pin 9Driver temperature monitor (out)Pin 25not connected