Frequency Range:

Range 1: 250 to 750 metres
Range 2:  600 to 1000 metres.

Valves: Onevalve  is used as a detector while the other is a spare.

Close up of the British Fleming valve receiver. The two valves are missing.  (Courtesy Pacific TV web site)

This example shows the fitting of the two Fleming valves. The reference numbers are not model numbers,. They are catalogue numbers.  (Image courtesy Marconi UK.)

Functional parts of the Fleming receiver. Click on thumbnail to enlarge.

The 1910 Marconi (UK) catalogue index describes four variations of the Fleming Valve Receiver.

Valve Receiver No. 1 (Short Wave) - 250 to 759 metres
Valve Receiver No. 2 (Short Wave with intermediate circuit) - 600 to 1200 metres.
Valve Receiver No. 1 (Long Waves) -  1600 to 4200 metres
Valve Receiver No. 2 (Long Wave)  -  Custom order

When ordering from the catalog, reference number 1051R  covered 250 to 750 metres while reference  1052R covers 600 to 1600 metres.

Dimensions: 19.25" x 13.25" x 10.375"
Weight: 27.5 pounds
Power input: 6 VDC
 

Bottom view of the Fleming valve receiver. Click on image to enlarge. (Photo source unknown)

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Contributors and Credits:

1)   Lewis Bodkin  <05bodkin555(at)gmail.com>
2 ) Pacific TV     http://pacifictv.ca/
3) The Cabinet  http://www.cabinet.com/
4) History of Science Museum (UK)  blogs.mhs.ox.ac.uk

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May 13/21