Multichannel television sound (BTSC) stereo at the RF output.
These devices have multiple audio and video inputs and one RF output.
When this RF output climbs above a given level a catastrophic change occurs which causes the RF power output to drop rapidly.
RF output: 'A' setting 2.5-9 watts.
Operators may change the RF output of the transmitter.
In direct modulation, it is very difficult to change the RF output.
Other countries had the RF output for video equipment on different groups of frequencies.
The Model 43 was still used in the same capacity of testing the RF output and matching the transmitter to the antenna.
RF output if required.
CCU-150 had the RF output and Genlock sync in.