SteppIR BigIR - PTT LOCKOUT TUNING RELAY (INCLUDED)

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To prevent application of unintended, excessive RF power while the SteppIR antenna is tuning, the OptimizIR
controller provides an isolated pair of contacts from a 3.5 mm stereo jack to interrupt the PTT relay signal to a
linear amplifier. The cable is provided, but any standard 3.5 mm stereo plug to two RCA plug cable sold for
audio applications works well in most cases. Some more modern amplifier relay control schemes are different
and may not accommodate an RCA plug. Older amplifiers may use high voltage in their PTT circuit which
may be a problem for some transceivers. Please read your amplifier and transceiver manuals carefully. The
3.5 mm plug tip and ring connect to isolated relay contacts inside the controller that interrupt the PTT circuit.
The sleeve connection serves as a ground/shield.
PTT LOCKOUT TUNING RELAY (INCLUDED)
Figure 7.1