‰  NOW 25 WPM  ‰  TEXT IS FROM DECEMBER 2018  QST  PAGE 30 ‰

USB MINI B FIVE PIN CONNECTOR.  RF ACTUATED SWITCH THE RF SWITCH DETECTS RF
ENERGY AT THE TRANSMITTER CONNECTOR AND TRIGGERS A 555 TIMER, ACTIVATING
THE ANTENNA RELAY K1 AND THE MUTING RELAY 2.  AN ADJUSTABLE TIME DELAY
ACCOMMODATES SEMI BREAK IN OPERATION.  BOTH RELAYS ENERGIZE INSTANTLY, BUT
THE TIMER PROVIDES A DELAYED RELEASE TIME DETERMINED BY THE SETTING OF THE
TRIM POTENTIOMETER TRIMPOT.  THE DELAY CAN BE UP TO SEVERAL SECONDS TO
PROVIDE VOX LIKE OPERATION ON VOICE OR SEMI REAK IN OPERATION IN CW.
ANTENNA RELAY THE ANTENNA RELAY HAS 8 A CONTACTS TO HANDLE ANTENNA
SWITCHING BUT SHOULD ONLY BE USED WITH NON REACTIVE 50 LOADS.  APPLIED
POWER SHOULD NOT EXCEED 100 W, AND A TUNER OR RESONANT ANTENNA SHOULD
ALWAYS BE USED TO ENSURE LOW SWR.  ONE SET OF CONTACTS TRANSFERS THE
ANTENNA FROM RECEIVER TO TRANSMITTER, AND A SECOND SET GROUNDS THE RECEIVER
INPUT TO PROTECT AGAINST EXCESSIVE SIGNAL LEVELS DURING TRANSMISSION.  YOU
‰  END OF 25 WPM TEXT  ‰  QST DE W1AW  ƒ