Espritmodel.com Telemetry Radio
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Old Dec 30, 2012, 05:16 PM
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This could mean no flying in the wintertime! O THE HUMANITY!
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Old Dec 30, 2012, 05:40 PM
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This could mean no flying in the wintertime! O THE HUMANITY!
Never! I'll use those handwarmers of yours if I have too. Maybe Frsky can offer an "all weather model" tested to -20C. That would be a lot lower than I am good for.

These are probably a lot better off inside a fuselage than hanging out in the breeze. I think I will make a little foam insulated box even for my "good" ones. Since they produce some heat (100mW?) even a 1/4" thick foam box should raise the temperature 20 degrees or so if I am figuring correctly.
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Old Dec 30, 2012, 07:05 PM
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Wayne at Aloft got back to me immediately. He will provide replacement RX's for me and send mine to Frsky for testing and evaluation. Great service.

Here is an enclosure made out of 1/4" EPP that encloses the RX and the attached DAC RSSI circuit board that should provide some insulation as well as some protection for the exposed DAC board. The enclosure can easily be slid off the RX. There are little holes covered with clear tape to view the RSSI leds and the RX led.
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Old Dec 30, 2012, 07:35 PM
Flying a Chipmunk in Portugal
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Ok, My D8R-II Plus just spent over 15 minutes in the freezer. not a single glitch. was monitoring the RSSI on my radio's screen and actually was getting better and better as it got colder
Always with a beautiful solid red light
So, it might be a bad batch, or not even that but surely should be investigated by frsky..
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Old Dec 30, 2012, 07:45 PM
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My bet would be on a bad solder joint.
They are probably using lead free solder to comply with ROHS- and it is just a lot harder to get reliable joints with it.
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Old Dec 30, 2012, 08:21 PM
Flying a Chipmunk in Portugal
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Yes, it could be, but it should be checked.. if it is a bad solder joint, sooner or later it will fail, whether is cold or not..
Maybe frsky should make the freezer test before sending them out..
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Old Dec 31, 2012, 02:53 AM
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Originally Posted by jhsa View Post
Yes, it could be, but it should be checked.. if it is a bad solder joint, sooner or later it will fail, whether is cold or not..
Maybe frsky should make the freezer test before sending them out..
It was routine to temperature cycle fibre optic components before shipping them . the test was -40 to +85C ramp time 60 seconds. So its not a test that is unfamiliar to the electronics industry.

Terry
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Old Dec 31, 2012, 04:59 AM
throw new IOPilotException();
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Is this one of the new FrSky "radios"?

http://www.youtube.com/watch?feature...zSEmT-E#t=122s
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Old Dec 31, 2012, 08:36 AM
Fly now crash later
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Quote:
Originally Posted by u2builder View Post
Wayne at Aloft got back to me immediately. He will provide replacement RX's for me and send mine to Frsky for testing and evaluation. Great service.

Here is an enclosure made out of 1/4" EPP that encloses the RX and the attached DAC RSSI circuit board that should provide some insulation as well as some protection for the exposed DAC board. The enclosure can easily be slid off the RX. There are little holes covered with clear tape to view the RSSI leds and the RX led.
I got my frsky stuff about the same time. Guess I should test it in the freezer. i hope they report back their findings on the Rx's.
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Old Dec 31, 2012, 08:43 AM
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Is this one of the new FrSky "radios"?

http://www.youtube.com/watch?feature...zSEmT-E#t=122s
I wish they sold this! I would buy 2-3 of em!
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Old Dec 31, 2012, 09:02 AM
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It's a variation of fmkit nunchuk based controller, check his posts.
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Old Dec 31, 2012, 01:06 PM
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Quote:
Originally Posted by Terry Rigden View Post
It was routine to temperature cycle fibre optic components before shipping them . the test was -40 to +85C ramp time 60 seconds. So its not a test that is unfamiliar to the electronics industry.

Terry
Hi Terry

A Burn-in of consumer electronics is usually not carried out. The costs are too high. Some hardware
failures are detected by the SMD mounting machines. Usually is also an In-Circuit Test (ICT), but also expensive.

An ICT test and a Burn-in is normally carried out on aerospace electronics, somtimes even with random vibrations,
e.g. to simulate the vibrations of gunfire. Sure other high priced electronic products may also tested
by an ICT and/or a Burn-in.

Best regards and a happy new year!
Micha
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Old Dec 31, 2012, 01:48 PM
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FWIW, they do lots of burn-in and in-circuit testing where I work, but I guess you could say our products are "high priced"
(Paradigm/Anthem/Martin Logan products)
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Old Dec 31, 2012, 02:39 PM
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Hi pmackenzie

I have two loudspeaker's from Klein + Hummel (SL 40), of course not a consumer electronic.

Best regards and a happy new year!
Micha
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Old Dec 31, 2012, 02:42 PM
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Originally Posted by pmackenzie View Post
FWIW, they do lots of burn-in and in-circuit testing where I work, but I guess you could say our products are "high priced"
(Paradigm/Anthem/Martin Logan products)
Wow, I love Paradigm speakers...I have an old pair of original Studio Monitors that shake the house!
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