ID:
2576
Maker's Name:
Advance Components Ltd, London
Where made:
England
c. 1950
Dimensions:
38.5 × 17 × 23.5 cm
Used to measure the 'Q' or sharpness of response of a resonant circuit or filter.
Q = (centre frequency)/bandwidth where the bandwidth is the frequency range between half power points (where amplitude is 0.707 of maximum )
It has six frequency ranges:
100 - 300 kc/s
300 - 1000 kc/s
1-3 Mc/s
10-30 Mc/s
30 - 100 Mc/s
and two Q ranges: 10 - 100 and 40 - 400.
