Today's Message Index:
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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
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| Subject: | Re: A200/Flightcom 403 radio not transmitting- plane |
grounded!!
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
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| Subject: | 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
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| Subject: | Stereo to mono headphone jacks |
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
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| Subject: | Re: 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.
Bob . . .
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