skyBeacon Transponder Monitor Threshold Video Tutorial
Prior to changing any values we strongly recommend a short flight with the Transponder Threshold set at 35%. A 15-minute flight within good radar and ADS-B coverage should be adequate. The skyBeacon, transponder, and altitude encoder should all be powered on for at least 3-5 minutes prior to takeoff.
On some installations, the transponder monitor threshold may need to be adjusted for your aircraft to achieve reliable reporting of the Mode 3A (squawk) code.
Before starting this process:
- The transponder needs to be in ALT mode and receiving interrogation from actual radar or a transponder test set.
- Most transponders have a reply indicator that illuminates when the transponder is replying to interrogation.
- In order to complete this process, the indicator should be illuminated at regular intervals. At a minimum, the reply light should be flashing every 18-40 seconds.
- If there is no indication of replies the aircraft should be relocated to a better radar service area.