Type:  A complete receiver system consists of the model 352 Receiver (2 valves ) , a model 357 Heterodyne (local) Oscillator ( 1 valve)  and a type 358 Note Filter (3 valves).
Frequency range:
Short wave - 15 to 2000 meters.  Using a separate heterodyne unit,  the  wave range can be changed  to  200 to 22,000 meters.
Valve lineup: 2 x  LP2
Power: Powered by batteries. Needs 2 VDC for the filaments and 72 VDC for the B+
Differences The 352A is the follow on system with some improvement such as adding bandspread to the receiver itself,  .
Comment: For addition information see the 352 PDF file courtesy Jerry Proc.

352 receiver. (From "The Handbook of Technical Instruction For Wireless Telegraphists", fourth edition.  1929.  The third edition was first printed in 1923)

352A receiver rear view. (Image courtesy Radiomusem.org.

This is a complete receiver. The 352 itself is in the centre. The note filter is believed to be on the left with the local oscillator on the right. The so-called "Note Magnifier" is a part of receiver Type 352, and not to be confused with the "Note Filter" Type 358 which is a separate unit. (Image from Marconi Review)

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Contributors and Credits:

1)  http://www.radiomuseum.org/r/marconiint_type_352_receiver.html

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April 10/20