ASW27 Trasponder Antenna Installation Inside Fuselage.

Originally Posted by Paul Birkett

Hello, my intention is to fit a Transponder Antenna within my ASW27. I was

wondering does anyone know where on the ASW27 Fuselage is not Carbon
or Aramid(conductive) construction, which would allow internal fitting of
an
antenna such as a Dolba BD1, Dolba BD2, FUNKE DP1090-5 or similar?
Schleicher TM/TN 13 “installation of a PCB-transponder antenna in the
vertical tail� doesn’t give a drawing/photo/diagram and I have
requested
additional information from Zulu-Glasstek. If I were to install antenna
within
the vertical stabilizer (Dolba BD1), the coax cable length would be
considerable (6 to 7 metre) and routing-security could be an issue, using
Carlisle ECS P/N 311501 coax cable. However, if the nose (tip area) of the

fuselage was manufactured from GRP as maybe used on other carbon fibre
Schleicher fuselages, then I would endeavour to install antenna within this

area? I have 95% dismissed TM/TN 12, installation of external antenna
alongside undercarriage due to it being ugly and prone to damage. Any
information gladly received. Best regards Paul.

Hi

I have a friend who installed his transponder aerial in the rear of the stbd gear door on his 27. It was recessed and attached to the inner skin of the door so it didn't protrude much and was well clear of the ground in the event of a wheel up and lifted up out of the way when the gear was down.

Quite an elegant solution I thought. I can get pictures to post here next time I'm at the field if anyone is interested

:-) Colin