---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Tue 11/06/12: 4 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 08:12 AM - Re: A200/Flightcom 403 radio not transmitting- plane grounded!! (SIDESLIP) 2. 09:40 AM - Few more comments on Metcal (D L Josephson) 3. 12:02 PM - Stereo to mono headphone jacks (Eric Marenyi) 4. 02:55 PM - Re: Stereo to mono headphone jacks (Robert L. Nuckolls, III) ________________________________ Message 1 _____________________________________ Time: 08:12:13 AM PST US Subject: AeroElectric-List: Re: A200/Flightcom 403 radio not transmitting- plane grounded!! From: "SIDESLIP" UPDATE: AME looked over the install of the comm, and all looks proper. Squealed for him as well with plane not running. We even unplugged the handheld and it still did it. So, the A200 has been pulled and sent to Avionics shop for bench testing. Stay tuned..... (Pun intended) Hopefully the A200 is broken! Then it'll be an easy fix. Chad -------- C-GYXQ. 912ULS. 601XL-B Read this topic online here: http://forums.matronics.com/viewtopic.php?p=387086#387086 ________________________________ Message 2 _____________________________________ Time: 09:40:59 AM PST US From: D L Josephson Subject: AeroElectric-List: Few more comments on Metcal We have been using the Metcal stations for about 20 years and even the one or two stations we bought at full retail have paid for themselves within a short time. I first used these when doing consulting for Apple and there was no turning back. There are two simple differences between these and other irons: (1) the work heats up much faster for a given temperature because the tip (and only the tip) is maintained at the right temperature, and (2) the tool is so much smaller and lighter that it's just a lot easier to use. There are three series of these systems. The original MX500 is the most common. It uses a modified coaxial F connector for the handpiece, and single-pin tips from the STTC series. This is what we use (my company makes microphones for recording studios.) The newest MX5000 have more power, a lot of programmable features and options for handpiece grips etc. but they use the same STTC tips. There was a low cost SP200 series for a while using a different handpiece connector and different tips, I would recommend that you avoid them -- while they work fine, the tips and handpiece connectors (that have two small pins inside rather than the single coaxial pin of the STTC) don't last as long in our experience. Two cautions with the older MX500 units: they don't have auto idle/shutoff and the tip will erode if you leave it on for weeks without using it, and some of the power units can be damaged if you turn them on without having a tip and handpiece connected. Be sure the handpiece cable is securely threaded or pushed on before you turn on the power. The standard STTC-137 tip for normal use and STTC-117 for heavy work do most of what we need. I have an old standby Weller WTCP station in the travel kit because it's smaller than the Metcal. The standard PTA7 and bigger PTD7 tips are all you need. ________________________________ Message 3 _____________________________________ Time: 12:02:23 PM PST US Subject: AeroElectric-List: Stereo to mono headphone jacks From: Eric Marenyi I bought some of the Stereo headphone plugs from B and C and tried calling to ask a question but was unable to get an answer. I have a Flightline FL-760 radio and this only has a mono headphone output so should I just run a jumper wire from the sleeve post to the ring post and ground them both, and the tip wire would be the wire fed from the radio? I am struggling through making a harness for the radio and this was ONE of the looming questions. I have another regarding grounds from other components, but I will wait until I get home to attach a photo of the wiring schematic. Thanks -- Eric M. ________________________________ Message 4 _____________________________________ Time: 02:55:50 PM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: Stereo to mono headphone jacks At 02:00 PM 11/6/2012, you wrote: > >I bought some of the Stereo headphone plugs from B and C and tried >calling to ask a question but was unable to get an answer. I have a >Flightline FL-760 radio and this only has a mono headphone output so >should I just run a jumper wire from the sleeve post to the ring post >and ground them both, and the tip wire would be the wire fed from the >radio? I'm presuming that your headphones are fitted with 1/4", stereo plugs. To convert to monophonic operation put headphone audio to both tip and ring connections. The tip-ring connection becomes the HI or signal connector to your FL-760 The headset ground still goes to the sleeve. >I am struggling through making a harness for the radio and this was >ONE of the looming questions. > >I have another regarding grounds from other components, but I will >wait until I get home to attach a photo of the wiring schematic. I hope you're planning on some form of common ground local to the radios. You can build from scratch or purchase http://tinyurl.com/7hvmat6 as your needs/motivations dictate. 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