The Bendix KR 87 ADF has two knobs and five buttons. It displays active and stand by frequencies and integrates two timers.

Clicking areas

1. ADF / ANT modes. This version displays ADF station ident.

2. BFO mode (just the letters)

3. In frequency mode transfer stand by frequency to active. Returns to frequency mode from timers modes.

4. Go into timers mode.

5 and 6. Controls timers modes (described below).

7. On Off

8, 13, 14. Decrements frequency

9. Increments fractal frequency

10, 11, 12. Increments frequency

Display modes

Frequency mode

Use knob and swap button to manage this screen.

FLT timer Mode

From frequency mode push FLT/SET button once to go into this mode. This timer begins to count when you turn on the gauge and stops when you turn it off.

ET timer Mode

rom frequency mode push FLT/SET button twice to go into this mode. This timer starts to count when you turn on the gauge, but you can control it. Clicking on SET/RST button once stops the timer. When it is stopped clicking again reset the timer and starts to count from zero. Clicking to the right of the button (area 7 above) will reset it to zero and ET begin to blink, you can use the knob to set a countdown (up to 59 minutes and 59 seconds), push SET/RST to start the countdown. After the countdown timer reaches zero, the counter will come up, whatever the mode you are in, and will begin to count upwards indefinitely while flashing for a few seconds, returning then to the mode you were before, if it was different. The Audio Alert is then sounded