The RA3702 Dual HF Receiver

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This post is part of the series 'The Racal 3700 Series':
  1. The RA3700 Series
  2. The RA3701 HF Receiver
  3. The RA3712 Dual HF Receiver
  4. The MA3752 Dual HF Drive Unit
  5. The RA3702 Dual HF Receiver
  6. The TA3762 250W Linear Amplifier
  7. The MA3772 1KW HF Combiner
  8. The MA3752 driving a TA3762 PA

September 2019

The RA3702 is issentially two RA3701s in the same rack-space. However, like the RA3712, the basic configuration takes up nine of the available ten slots. Whereas my RA3701 has a Sub-Octave-Filter before the RF Front-End and an additional 100KHz IF Output Module, my RA3702 has neither. Like the RA3712, the RA3702 employes the higher spec. Racal-Dana 9420 5MHz reference Oscillator. For a description of the plug-in modules see the page on the RA3701.
Above, rear view of my RA3702. Note the epoxy-resin between the Main-Voltage Selector and the IEC Mains connector. Although I have on one occasion replaced the entire Schaffner unit with a brand new one, I have since learned that it is possible to simply hack-saw the exploded filter/connector part off and replace it with a 'plain-vanilla' IEC plug ... allowing me to retain the mains-voltage selector.

Next post in the series:
The TA3762 250W Linear Amplifier