cdeerinck
Well Known Member
I'm having a rough time locating my antennae. I have my 2 Comm antennae in the typical location, wide as can be, just aft of the wing spar. I am using the Delta-Pop Bent Red Tails (http://www.deltapopaviation.com/VHF_Com_Antennas.html) for these.
I need to locate the two Delta-Pop Transponder/UAT antennae for my Transponder and ADSB. (http://www.deltapopaviation.com/Transponder_Antenna.html)
All of the avionics are Dynon Skyview, and the Dynon manual gives me the following guidelines: Transponder and ADSB at least 3' from Comm, and at least 2' from each other. In this case, I presume that means from the tip of the Red Tail, and not the base.
This is a picture of my rear fuselage:
Only two solutions seem possible:
1) On the centerline, one just aft of the bulkhead that is behind the battery tray, and the other 2' further back on the centerline.
2) Side by side, just in front of, and off to the sides of battery tray, but only 18" apart.
If I do option #1, I could put the transponder on the lower shelf (red arrow location), and the ADSB next to it (orange arrow), to keep the coax runs short. But my concern is their proximity to the ADAHRS unit(s), the ADAHRS (blue arrow), and a spot for an ADAHRS Backup location (green arrow) for future possible IFR. They would be just about 12" away from the ADAHRS, but separated by an aluminum shelf.
If I do option #2, I could put the transponder and ADSB on the side walls near the battery, keeping them just over 3' from the ADAHRS locations, but the antennae will be 6" closer than spec. Is there any fluff in the spec?
So, my question is, which of these options are better, or is their another option I haven't though of here?
Also, I know I am not supposed to kink RG-400, but can anyone tell me approximately how safe a radius is allowed?
I need to locate the two Delta-Pop Transponder/UAT antennae for my Transponder and ADSB. (http://www.deltapopaviation.com/Transponder_Antenna.html)
All of the avionics are Dynon Skyview, and the Dynon manual gives me the following guidelines: Transponder and ADSB at least 3' from Comm, and at least 2' from each other. In this case, I presume that means from the tip of the Red Tail, and not the base.
This is a picture of my rear fuselage:
Only two solutions seem possible:
1) On the centerline, one just aft of the bulkhead that is behind the battery tray, and the other 2' further back on the centerline.
2) Side by side, just in front of, and off to the sides of battery tray, but only 18" apart.
If I do option #1, I could put the transponder on the lower shelf (red arrow location), and the ADSB next to it (orange arrow), to keep the coax runs short. But my concern is their proximity to the ADAHRS unit(s), the ADAHRS (blue arrow), and a spot for an ADAHRS Backup location (green arrow) for future possible IFR. They would be just about 12" away from the ADAHRS, but separated by an aluminum shelf.
If I do option #2, I could put the transponder and ADSB on the side walls near the battery, keeping them just over 3' from the ADAHRS locations, but the antennae will be 6" closer than spec. Is there any fluff in the spec?
So, my question is, which of these options are better, or is their another option I haven't though of here?
Also, I know I am not supposed to kink RG-400, but can anyone tell me approximately how safe a radius is allowed?