Transponderz

On Friday, October 26, 2012 1:08:06 PM UTC-7, jfitch wrote:
On Friday, October 26, 2012 9:33:49 AM UTC-7, 3Y wrote:





I put a Trig TT21 in last summer and have been happy with it. It's also compact and simple to install, I put an AAE L2 antenna in the nose which is also easy and seems to work fine. The customer service is also top notch.















jim







Jim or others,







Does anyone know about any health risks by putting the antenna in close proximity to the pilot?







Thanks, John



This is covered in some depth by some papers published recently in Britain. The subject has to do with portable transponders for use in sport aviation there, these are handheld units which are expected in some cases to be carried in a pocket or worn on a harness. The conclusion of the tests was that as long as the antenna is farther than 8 or 10 inches, the hazard was acceptable by current occupational exposure rules, i.e., you would be allowed to experience that 8 hours a day.

I should add, I have an AEE dipole in the nose about 8 inches from my feet, but despite 200 watts tested radiated power from the Trig 21, it does not keep my feet warm...