Yesterday I completed replacing my power hungry (11 amp total draw) dual
beacon with dual strobes (3.8 amp total draw). Now Ive got some
intermittent noise in the COM, which is not continuous but happens AFTER
the radio finishes receiving, for several seconds, and then dissapears. I
tought that the automatic squelch was staying open and picking strobe
noise, but that is not so, because I can turn the squelch totally off and
most of the time the strobe noise is not there at all. Something is
causing it to happen just after receiving every incoming transmission. I
am not in a hurry to resolve this, since it is bearable and I really like
having those strobes on all the time while transiting under the busy DFW
Class B airspace. On my list of things to try are:
1. grounding the strobe power supplies directly to the battery, instead
of to the plane chassis (recommended by Whelen)
2. Installing Lone Star Eliminator power line filters (which will not help
if the noise is being picked through the antenna, instead of through the
DC power line)
Any other recommendations?
Eliacim
