AeroElectric-List Digest Archive

Sat 02/22/14


Total Messages Posted: 3



Today's Message Index:
----------------------
 
     1. 11:10 AM - Re: PCB Mfg board house - in UK or Europe? (Sacha)
     2. 01:47 PM - Re: noise problem on radio (Sacha)
     3. 05:42 PM - Insulating 3.5mm Jacks (Jared Yates)
 
 
 


Message 1


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    Time: 11:10:51 AM PST US
    From: "Sacha" <uuccio@gmail.com>
    Subject: PCB Mfg board house - in UK or Europe?
    >OSH Park ships international for free. See here: http://bit.ly/1cwmLTt > Yep... www.pcb-pool.com I've used the South African incantation a number of times with great success. Etienne & Eric, thank you!


    Message 2


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    Time: 01:47:20 PM PST US
    From: "Sacha" <uuccio@gmail.com>
    Subject: noise problem on radio
    Thank you Bob, I went back and inspired by your comment about Mr. Clue, I carefully observed the phenomenon without jumping to conclusions. It turns out the interference only happens when the (Trio Avionics Pro Pilot) Autopilot is ON, even if the engine is OFF. Attached is a link to a video with sound. There is a lot of background noise (mostly the sound of the GNS430 fan) but you can still here the interference and see that it completely disappears when the AP is turned off. The interference happens in the form of a RX signal on the radio. In other words, whatever is happening is causing the COM radio to think it's receiving a transmission, as is evidenced by the RX signal that's visible on the GNS430 screen. Anyone have any idea why this might be happening? I guess my next step is to see if this also happens on, say, a handheld COM. Sacha https://dl.dropboxusercontent.com/u/56559644/Autopilot%20COM%20interference% 20email.mp4


    Message 3


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    Time: 05:42:19 PM PST US
    Subject: Insulating 3.5mm Jacks
    From: Jared Yates <email@jaredyates.com>
    Has anyone found an elegant way to electrically isolate 3.5mm audio jacks? I don't know if it is as necessary to isolate these as we do the full-size headset jacks, but does anyone make isolating washers for the smaller guys?




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