Frequency range:

Band 1:      5,000 to 11,000  m
Band 2:      9',000 to 20,'000 m

Valve: Uses type DEV valve
Manufactured by: Marconi's Wireless Telegraph Co. Ltd

Type 86  No. 211988  (Courtesy Radiomuseum.org)

---

Contributors and Credits:

1)  Lewis Bodkin  <05bodkin555(at)gmail.com>
2) https://www.radiomuseum.org/r/marconi_wi_heterodyne_86.html

Apr 10/20