Product support is very poor. Parts are difficult ,as they want you to send it to them and them alone.
I have a full panel of the 120 series and it all works fine. I needed a new antenna for the ADF, it is a combined loop and sense type. All I needed was the 8inch wire part. Narco could not supply and would only say send it to us and we will see what we can do.
The 'phone operator that deals with parts and service should try another job as she is no good at this one and has an attitude.
Buy an airplane with King or Garmin and save yourself problems later down the road.