---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Fri 12/23/11: 5 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 12:11 AM - Re: Headphone squeal (Michael Phillips) 2. 05:35 AM - Aerobatics vs Gyros (tomcostanza) 3. 05:47 AM - Honeywell Switch Ratings (tomcostanza) 4. 08:12 AM - Re: Aerobatics vs Gyros (Robert L. Nuckolls, III) 5. 06:01 PM - Re: Gooseneck map light assy available . . . (nuckollsr) ________________________________ Message 1 _____________________________________ Time: 12:11:46 AM PST US Subject: Re: AeroElectric-List: Headphone squeal From: Michael Phillips Check for insulation washer on mic jack Sent from my iPad On Dec 22, 2011, at 2:07 AM, "Jay Hyde" wrote: > I=99m busy trying to solve a problem of a load squeal in the headpho nes. The installation was done by somebody else and I=99m picking up t he pieces J > > The system uses a Flightcom 403 intercom and has pilot, copilot and 2 pax p laces. I see that both the headphone and microphone wires are run in the sa me shielded cable (a 3 core cable). Whenever you plug a headset into any of the pax places you get an almost immediate squeal in all the =98phone s. Sometimes it does not start immediately, but as soon as you tap or try t o speak into the microphone the squeal starts. Best practice suggests that t he microphone and headphones wire should be separate and shielded so I suspe ct that this may be where the problem lies. > > Anybody else had similar problems? > > Jay > > ========================== ========= ========================== ========= ========================== ========= ========================== ========= ========================== ========= > ________________________________ Message 2 _____________________________________ Time: 05:35:18 AM PST US Subject: AeroElectric-List: Aerobatics vs Gyros From: "tomcostanza" I read a Mid-Continent manual that advised turning off the gyro 5 minutes before doing aerobatics. I assume the 5 minutes is to let the gyro spin down. I have 3 gyros. I don't want to use 3 switches, but I'm willing to use one 3 pole switch. Any suggestions? Has anyone done this? I realize a single switch is a single point of failure, but this is one mother of a switch. And what are the odds of all 3 poles failing at the same time? P.S. Posted this on VAF too. -------- Clear Skies, Tom Costanza Read this topic online here: http://forums.matronics.com/viewtopic.php?p=361536#361536 ________________________________ Message 3 _____________________________________ Time: 05:47:21 AM PST US Subject: AeroElectric-List: Honeywell Switch Ratings From: "tomcostanza" This catalog http://www.f16pit.com/docs/honywell_tl.pdf shows electrical ratings on the 1st page. Am I correct that this is the capacity per pole? Or is it the total capacity of the switch? -------- Clear Skies, Tom Costanza Read this topic online here: http://forums.matronics.com/viewtopic.php?p=361537#361537 ________________________________ Message 4 _____________________________________ Time: 08:12:16 AM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: Aerobatics vs Gyros At 07:31 AM 12/23/2011, you wrote: > > >I read a Mid-Continent manual that advised turning off the gyro 5 >minutes before doing aerobatics. I assume the 5 minutes is to let >the gyro spin down. I have 3 gyros. I don't want to use 3 switches, >but I'm willing to use one 3 pole switch. Any suggestions? Has >anyone done this? > >I realize a single switch is a single point of failure, but this is >one mother of a switch. And what are the odds of all 3 poles >failing at the same time? Very small . . . . . . and the "ratings" are per pole . . . ANY of the Microswitch products is suited to your task. Bob . . . ________________________________ Message 5 _____________________________________ Time: 06:01:21 PM PST US Subject: AeroElectric-List: Re: Gooseneck map light assy available . . . From: "nuckollsr" The parts have been sold. Thanks for looking. Bob . . . 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