Radio Shack TRS-80 model III Owner's Manual page 23

OPERATION
Specifications
Diskettes
Diskette Organization
(Formatted
Diskette)
Operating Temperature
Power Requirements
(External Drives)
5
[
A"
mini-diskettes
Radio Shack Catalog
Number
26-305,
26-405 (package
of
three),
or
26-406 (package
of
10)
Single-sided
Double-density
40 Tracks
18
Sectors/Track
256
Bytes/Sector
55
to
80 Degrees
Fahrenheit
13
to
27 Degrees Celsius
120
VAC,
60 Hz, 28
VA
(240
VAC,
50
Hz, Australian;
220
VAC,
50 Hz,
European)
15