Filmsklave (Klatschschalter)

The alignment squeaker`s main use is for the adjustment and alignment of trans- mitters and antennas. To ensure a true indication of the field strength, the measurement should be carried out at some distance from the transmitting antenna. Since meters are somewhat difficult to read at any distance over a few feet some alternate solution had to be found. An audio indicator, which could be heard over a distance of say 100 feet, seemed to be a logical solution to the problem and since the human ear is much more sensitive to changes in frequency than to amplitude changes, this unit was designed to change pitch as the field strength varies.