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Technical Support / Best cable for aerial extension
« on: January 22, 2018, 10:37:55 am »
Hi all, I am researching into permanently installing a PilotAware in an EV97 and intend to put both aerials in one side as we have a transponder aerial in the other. I would like to customise the aerial extensions to length and I need advice what extension cable to use.
I found the following web page: http://www.arrg.us/pages/Loss-Calc.htm
and Input my requirement (2M long extension, 870MHz and 0.5W) and tried RG-174,RG-58, RG-8x, RG-8 and LMR-400.
It was a bit scary to see that you lost nearly half the signal if you use RG-174 but I found that RG-8 and LMR-400 were the best.
No 1 - Am I going over the top and worrying too much about line loss??
No 2 - Would it be practical to use either RG-8 or LMR-400 for an aerial extension in an aircraft?
I also intend to fit the aerials as far apart as practicable on the metal plate between the wing and body, is this good practice?
Dave.
I found the following web page: http://www.arrg.us/pages/Loss-Calc.htm
and Input my requirement (2M long extension, 870MHz and 0.5W) and tried RG-174,RG-58, RG-8x, RG-8 and LMR-400.
It was a bit scary to see that you lost nearly half the signal if you use RG-174 but I found that RG-8 and LMR-400 were the best.
No 1 - Am I going over the top and worrying too much about line loss??
No 2 - Would it be practical to use either RG-8 or LMR-400 for an aerial extension in an aircraft?
I also intend to fit the aerials as far apart as practicable on the metal plate between the wing and body, is this good practice?
Dave.