ELT - under glass portion of turtle deck
  TRANSPONDER - external antenna on belly (with ground plane)
  GS1 - external strip antenna at left wing root
  GS2 - external strip antenna at right wing root
  COM1 - belly whip (with ground plane)
  COM2 - belly whip (with ground plane)
  NAV1 - vertical stab
  NAV2 - ?
  GPS & satellite radio antennas - under the glass portion of the turtle deck.

Barry,

 

Here is what has worked well in my aircraft.

 

Xpdr-- AEA non ground plane antenna in vertical tail

Com 1-- COMANT whip on belly

Com 2 AEA non ground plane mounted vertical in vertical tail

Nav 1/ GS (work on splitter) -- Bob Archer in Left fiberglass wingtip-- (will not work in carbon wingtip)

GPS 1 & 2 -- on top of radio stack under glareshield

Mrkr Bcn  copper strip antenna in fiberglass wing root fairing

 

NAV antennas will not work well mounted vertically

 

As you can see-- I have only one visible antenna.

 

Regards,

 

Jeff Edwards

LIVP N619SJ