avio@superherc Posted February 25, 2013 Share Posted February 25, 2013 Equipment I am talking about is AN/ARC 190 HF Antenna coupler P/N 622-7375-002 from Rockwell Collins. There is an NRV on the front of the equipment, looks like a nitrogen fill port. What for it is used? The Job Guide says nothing about it. Quote Link to comment Share on other sites More sharing options...
KF4DVG Posted February 25, 2013 Share Posted February 25, 2013 The fill port is used to pressurize the coupler. There is an internal pressure switch that will indicate a coupler fault if the pressure is too low. That family of couplers require somewhere around 8 or 9 PSIG. Having internal dry air is good in an unpressurized mounting location to help prevent coupler internal arcing. Quote Link to comment Share on other sites More sharing options...
avio@superherc Posted February 26, 2013 Author Share Posted February 26, 2013 thank you Quote Link to comment Share on other sites More sharing options...
Ray70 Posted March 8, 2013 Share Posted March 8, 2013 Yep, we have an new update and we have the same problem. Pressure checked and it's work as advertised. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.