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Radio ignition noise.
Just put my panel back in after transponder repair. Now I hear a
significant ignition noise on the radio when pressing the mic-tx button. Same thing from both radios and both Pilot/Copilot sides. with separate headset inputs. Have a RST-564 Audio Panel. Have dual LightSpeed Plasma II ignition - the grounding checks out OK. --------------------------------------- SQ2000 http://www.abri.com/sq2000 |
#2
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Radio ignition noise.
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#3
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Radio ignition noise.
"Ron Wanttaja" wrote Sounds like some element of either the radio, intercom, or transponder shielding got messed up when you had your panel apart. Try some temporary tinfoil shields to see if you can narrow it down. And if that does not help, as a last resort, go to the tinfoil hat! g Sorry, but I can't get tinfoil hats out of my head, when it is talked about using it for anything other than wrapping food! ;-) -- Jim in NC |
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Radio ignition noise.
On Fri, 17 Aug 2007 02:24:15 -0400, "Morgans" wrote:
"Ron Wanttaja" wrote Sounds like some element of either the radio, intercom, or transponder shielding got messed up when you had your panel apart. Try some temporary tinfoil shields to see if you can narrow it down. And if that does not help, as a last resort, go to the tinfoil hat! g Heck, tinfoil hats make the problem WORSE! http://people.csail.mit.edu/rahimi/helmet/ "...For all helmets, we noticed a 30 db amplification at 2.6 Ghz and a 20 db amplification at 1.2 Ghz, regardless of the position of the antenna on the cranium... According to the FCC, These bands are supposedly reserved for ''radio location'' (ie, GPS), and other communications with satellites (see, for example, [3]). ...It requires no stretch of the imagination to conclude that the current helmet craze is likely to have been propagated by the Government, possibly with the involvement of the FCC." Ron Wanttaja |
#5
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Radio ignition noise.
"Ron Wanttaja" wrote Heck, tinfoil hats make the problem WORSE! http://people.csail.mit.edu/rahimi/helmet/ "...For all helmets, we noticed a 30 db amplification at 2.6 Ghz and a 20 db amplification at 1.2 Ghz, regardless of the position of the antenna on the cranium... You made a common mistake, by putting the shinny side of the tin foil on the wrong side. It should be a 30 db signal blocking ability! -- Jim in NC |
#7
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Radio ignition noise.
I have two comm antennas - one inside each composite vertical winglet
(my bird is a canard see http://www.abri.com/sq2000/postbuild01.jpg) - and the same problem is on either side - tried switching antennas and turning off the transponder - same problem. I am getting to suspect something is off in the audio panel. Took the instrument panel off again and checked all the wires and grounds carefully and could not find a problem. On Aug 17, 7:10 am, Stealth Pilot wrote: jim weir identified my similar problem as being corrosion under the antenna wire. a liberal polishing with brasso fixed mine. Stealth Pilot |
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