[Premium-Rx] Rockwell HF-2050

[Terry]

  Good day to all. I just acquired a beautiful Rockwell Collins  HF-2050
(serial #E4-is this right?) and I have several questions. First -what do I
have to do to get my headphones to work and cut out the speaker? Have
speaker hooked up to posts 3 and 1. Do I need to jump or hook up any more? I
am sure it is so simple-I just do not see the light. Any help would be
greatly appreciated. Also not sure if I have ISB. Any way to check? Tnx in
advance. Having fun and learning as I go.   
  73-tnx-Terry N4SuB
 
 
Life is Good