Mixer Module – HF

Mixer module is meant for operation in reception and transmission modes. In reception mode, the module selects, amplifies and converts the received radio signals in the operating frequency range from 2 to 24 MHz into signal of second intermediate frequency of 0.5 MHz. In transmission mode, the module amplifies and converts the arriving signals of IF 0.5 MHz into excitation voltage in operating frequency range from 2 to 24MHz.

Mixer Module – HF

Features

  • QT qualified and trial Flight tested
  • Used in HF Transceiver (B1KTsIIIM) of HF Communication System (R805-K3M)
  • It is based on double conversion receiver
  • Module Health check
  • Mixer Module is a mission critical system
  • Cooling shall be through natural convection/conduction cooling
  • Meets MIL STD 810G
  • No periodic maintenance required
  • MTBF of 2500Hrs at 25°C

Application

  • Airborne HF Radio

Specifications

Receiver
Input frequency range 2 – 24 MHz
Input level 1.2 μV – 500 mV
Output frequency 500 ± 1 kHz
Output level 6 μV – 0.1 V
Impedance 50 ± 5 Ω
Transmission Coefficient 17 ± 2 dB
4 dB Bandwidth 16 kHz (min)
70 dB Bandwidth 300 kHz (max)
SNR [(S+N)/N] ≥ 10 dB
Types of modulations J3E, R3E, H3E, A3E
Attenuation at Image & IF >80 dB
No damage RF input level +10 dBm
VSWR Better than 1.5:1
Transmitter
Input Frequency 500 kHz
Input level 100 to 200 mV (P-P)
Output frequency 2 to 24 MHz
Output level 0.15 V – 7 V
4dB Bandwidth 16 kHz ± 0.2 kHz (min)
VSWR Better than 1.5:1