Friday, December 21, 2018

Avionics

RG400 Coax antenna cables ( 3 hrs )

Routed RG400 coax from RH side Fuse at Comm whip antenna through to center tunnel.  Very difficult to pass cable through SB at transition to center tunnel...but eventually worked.  Crimped BNC connector on each end.  (Good videos from Stein Air and HomebuiltHelp , and EAA show how to do this successfully .   Then routed RG400 Coax cable from aft of baggage area through center tunnel up to IP for GPS WAAS antenna.  Crimped on TNC (threaded style  - and expensive at $23 vs $3.25 for BNC)  at antenna end.   Why Garmin uses this expensive connector at this antenna stumps me.   Also re-routed Static, Pitot and AOA air lines at IP.   As I routed coax cable nearby, I discovered perfect spot for a SB750-10 (not referenced in Vans instructions).  So I revised to route coax and these 3 lines together as shown below vs original pass over the vertical support.
coax cable prepped, then center pin crimped on
BNC connector crimped next,
added shrink wrap too


for Comm Antenna on RH bottom of Fuse
TNC (thread on stype) crimped for GPS antenna


routing/securing with static line next step
added snap bushing to vertical support, & re-routed air lines