9921 Binary to 9931 Trinary Transmitters or Receivers

Step 1.) Make up a code for the 9921 transmitter ( anycode ).

Step 2.) If any switches numbered 1 thru 4 on your 9921 transmitter are set to the ON position...Set the corosponding switch number on the 9931 transmitter/receiver to the positive or + position.

Step 3.) If any switches numbered 5 thru 8 on your 9921 transmitter are set to the ON position...Set the corosponding switch number on the 9931 transmitter/receiver to the negative or - position.

Step 4.) If any switches numbered 1 thru 9 on your 9921 transmitter are set to the OFF position...Set the corosponding switch number on the 9931 transmitter/receiver to the neutral or 0 position.