Triax TD multi LNB bracket to Primesat Dish Adapter

Triax TD multi LNB bracket to Primesat Dish Adapter

thingiverse

Triax TD multi LNB bracket to Primesat 1m Sat Dish Adapter (23/11/20) I present this design as a result of a need for a three or more LNB’s reflecting into a Primesat 1 metre dish. I had a Triax TD multi LNB adapter bracket which formerly attached to a Triax dish which got destroyed in a storm. I replaced the dish with a Primesat dish but found I could not attach the Triax TD bracket due to the LNB arms having different cross sections. Whilst I believe there are commercial adapters available somewhere, I decided to make my own. Actual measurements of the Primesat arm cross section and securing bolt hole were taken, measurement of the arm to LNB elevation angle (approx. 120°) and the size of the Triax bracket and its securing bolts were taken. I used Openscad to build a suitable adapter using those dimensions. Some experimentation was needed to get a useable design. I present these results for anyone who is interested. Due to the outdoor nature of the dish adapter, it has to be strong enough to stand up to weather and daylight UV rays. I used my BQ Hephestos 3D printer with a 0.4mm nozzle with Form Futura ApolloX white ASA filament. I used 250° hot end temp. and 100° heated bed temperature for the first 3 layers then 245°/80° for the rest of the build. Support material was necessary. It is early days to determine the durability but it works with satellites at 13°E, 16°E and 19.2°E. The weight of the (Inverto narrow quad) LNBs is depressing the arm such that LNB’s are not quite pointing at the optimal dish focal point and some adjustment of the angles might be necessary.

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