[ARC5] A British Version of ZB?

[Robert Eleazer]

The US ZB system modulated the 230MHZ signal at frequencies at around 1 MHZ and downconverted the signal via a VHF front end to a BCB receiver.  This makes perfect sense to me.

The British carrier homing system modulated the 200MHZ signal at 23KHZ ("supersonic") and then used a BFO to translate it into something useful.  This makes less sense to me.

Are these two approaches the same thing?

Wayne
WB5WSV    

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