Flew a practice ILS approach today intending to use the ILS in my Nav1 GNS530W. But it wouldn't identify the ILS on the screen, and I couldn't hear the ILS identifier on the Nav1 audio. Radio was tuned to the proper frequency and the CDI was set to VLOC and the audio panel was set to listen to both Nav1 and Nav2 (and the volumes were up).
I switched to my Nav2 (KX155) and could identify the Morse code and fly the approach using it. Interestingly, the Nav1 CDI indication agreed with the Nav2 CDI all the way down the glideslope.
On my way back to my home airport I tuned a couple of VORs and the GNS530W Nav1 identified them just fine. And I could tune and hear the VOR's morse code on the Nav1 audio. But I passed within about 8 miles of another airport with an ILS where I usually can identify the ILS on the opposite end of the runway (am I tuning the backcourse??). This time the GNS530W did not identify the ILS.
What could be wrong? How can the radio automatically identify 2 VORs, but not 2 iLSs...including one where I was flying the glideslope with another radio?
I switched to my Nav2 (KX155) and could identify the Morse code and fly the approach using it. Interestingly, the Nav1 CDI indication agreed with the Nav2 CDI all the way down the glideslope.
On my way back to my home airport I tuned a couple of VORs and the GNS530W Nav1 identified them just fine. And I could tune and hear the VOR's morse code on the Nav1 audio. But I passed within about 8 miles of another airport with an ILS where I usually can identify the ILS on the opposite end of the runway (am I tuning the backcourse??). This time the GNS530W did not identify the ILS.
What could be wrong? How can the radio automatically identify 2 VORs, but not 2 iLSs...including one where I was flying the glideslope with another radio?