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All Dry Portable 483

All Dry Portable 483; McMichael Ltd., (ID = 533836) Radio
 
All Dry Portable 483; McMichael Ltd., (ID = 533837) Radio
All Dry Portable 483; McMichael Ltd., (ID = 802401) Radio All Dry Portable 483; McMichael Ltd., (ID = 802402) Radio
All Dry Portable 483; McMichael Ltd., (ID = 802403) Radio All Dry Portable 483; McMichael Ltd., (ID = 802404) Radio
All Dry Portable 483; McMichael Ltd., (ID = 802405) Radio All Dry Portable 483; McMichael Ltd., (ID = 1489991) Radio
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All Dry Portable 483; McMichael Ltd., (ID = 802401) Radio
McMichael Ltd.,: All Dry Portable 483 [Radio] ID = 802401 640x480
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For model All Dry Portable 483, McMichael Ltd., Slough
 
Country:  Great Britain (UK)
Manufacturer / Brand:  McMichael Ltd., Slough
alternative name
 
McMichael, Leslie
Year: 1947 Category: Broadcast Receiver - or past WW2 Tuner
Valves / Tubes 4: DK91 DF91 DAF91 DL92
Main principle Superheterodyne (common); ZF/IF 465 kHz; 2 AF stage(s)
Tuned circuits 6 AM circuit(s)
Wave bands Broadcast (MW) and Long Wave.
Details
Power type and voltage Dry Batteries / 1.5 & 90 Volt
Loudspeaker Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 15 cm = 5.9 inch
Power out
from Radiomuseum.org Model: All Dry Portable 483 - McMichael Ltd., Slough
Material Leather / canvas / plastic - over other material
Shape Portable set > 8 inch (also usable without mains)
Dimensions (WHD) 300 x 305 x 150 mm / 11.8 x 12 x 5.9 inch
Notes

Appears to be Minature tube (B7G valve) version of 463 (octal bases), identical batteries, tuning mechanism, almost identical chassis layout and circuit (V3 Pentode + diode rather than triode + diode), a similar case but differenc speaker grill and finish (same chassis removal instructions and appearance).

Batteries: Batrymax B117 90V HT and All-Dry 32 1.5V LT, about 150 hours.

Dual loop/frame aerials with adjustable loading coils to tune LF end of band.

Early production may have RCA/Sylvania/Brimar designation equivalent tubes. 

Price excluded Purchase tax but included batteries.

Price in first year of sale 15.75 GBP
Mentioned in -- Original-techn. papers.
Literature/Schematics (1) Trader Service Sheet 860

Model page created by Peter Hoddow. See "Data change" for further contributors.



All listed radios etc. from McMichael Ltd., Slough
Here you find 180 models, 111 with images and 119 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.




  
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