2022-PA-063 | Assembled RX Galvanic Isolator + Protector + Limiter (1 MHz - 400 MHz)

Included

• our enclosure
• assembled and rigorously tested !
  

Also available as a kit ! (the soldering & assembly & testing is left to you !)

Also available as a pcb !

Function

Optimized for HF Band (2 Mhz -> 60 Mhz) Limits input RF ! You can keep your TX antennas in close proximity! Common mode noise rejection when used directly at the receiver input. Protects receiver input from ESD or input power damage !

Science

We designed this especially to protect a sensitive receiver front-end against high levels of RF and ESD discharges. This multi-stage design includes a gas discharge tube for maximum ESD protection, high pass filter and rectifier diode as a first stage RF clipper and ESD protection. A MMIC limiter is used limit the RF input (max 32 dBm) to a maximum of 8 dBm at the output. The 1:1 transformer is used to reject common mode and RF strays and provides a galvanic isolation between the receiver and the antenna input.

Placement advice

As close as possible (direct on the connector) on the receiver input.

Datasheets

• Frequency Range: 1 MHz through 400 MHz
• Insertion Loss: < 1dB above 3MHz, 1.23dB on 1.9 MHz (160M band)
• VSWR: < 1.6 above 3 MHz (2.28 on 160M band) (see measurements)
• Common mode rejection: +-10dB rejection on HF ! High rejection > 25dB on the 40M, 80M and 160M band
• Less than 8 dBm on the output. (most modern receivers (FlexRadio, Airspy, Icom) can handle these and even more!!!)

Measurements

• Reterun Loss VSWR HF 
• Insertion Loss HF 
• Common mode Rejection HF 
• Return Loss VSWR VHF 
• Insertion Loss VHF