ASW-24 - Transponder Cable Routing in Fuselage

On Monday, February 2, 2015 at 5:01:45 PM UTC-8, wrote:
The Schleicher web site indicates a transponder antenna should be installed in the landing gear bay. Of course it is in German, but even with Google translate it does not seem to indicate how to snake the antenna cable form the transponder behind the instrument panel to the landing gear bay. Does anyone have a suggestion how to route the cable? I see the various electric and pneumatic lines running forward to the nose and down through the bottom of the fuselage, but it looks very difficult (impossible?) to snake a line though the same location. Any help would be appreciated.

Thanks,

Lauren
5YA

Per the trig manual the cable max cable length for RG 400 coax is 8'4". I believe the manual is fairly conservative on the lengths of cable. The RG400 is a dual shield coax about .200" in diameter. It is stiff and should be fairly easy to string the cable without the Coax connector, but you would need a crimp tool to install the connector. The transponder end uses a TNC and the antenna end a BNC.

The cable for connecting the components is two .120 dia shielded cables, with a DB9 on the Head and a DB15 on the transponder with a power & Ground. Stringing these in my opinion would be just as hard and then you would have to solder or insert 6 wires in the DB9 and the hood. I sell these cables generally with a 2' length.

Most install the transponder in front of the panel and the antenna behind the gear at an angle so when you slide the glider in the trailer you don't damage it.


Richard
www.craggyaero.com