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Fig 13

Fig 13 Example Phantom PTT Keying Diagram

Fig 14

Fig 14 Example Phantom Squelch Indication Diagram

T6TR Transceiver

Audio lines with phantom PTT

signal superimposed

Solid state

relay

Reference can be configured as +14 V, 0 V

or -14 V from the Polarities screen.

With STD selected, PTT active when input

differs from reference by more than ±10 V.

PTT inactive when input differs from

reference by less than ±1 V.

With INV selected, PTT active when input

differs from reference by less than ±1 V. PTT

inactive when input differs from reference by

more than ±10 V.

For example, to use 0 volt as the keying

potential with STD polarity, set the reference

to +14 V or -14 V.

PTT

Maximum signal level ±60 V

with respect to transmitter

reference.

Internal Sensing Circuit

T6TR Transceiver

The pull-up voltage should be in the

range -60 to +60 V ac or dc.

R

Squelch Indicator

Audio lines with phantom

squelch signal superimposed

V

Solid state

relay

Relay = 100 mA maximum.

Can be configured as normally open, or

normally closed from the Polarities screen.