9x FlySky 2.4 module / Antenna soldering connection.

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bob195558
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9x FlySky 2.4 module / Antenna soldering connection.

Post by bob195558 » Tue Apr 26, 2016 12:01 am

Hi,
I am solder the 9x (tx) FlySky 2.4 module antenna connection (Model FS-TM002).
I want to confirm that I have the antenna soldered properly.
When there is no antenna soldered to the module how can I tell that these two connections are not soldered together.
I tried ohms readings and it reports a complete short between them.
9x FlySky Module Antenna Connections.jpg
Antenna pads, the two connections.
Is there a way or what should I be looking for to verify a proper solder connection using the multimeter ? :?:

Bob B.
Er9x on 9x radio, with Smartieparts Programmer and TelemetrEZ Board.
ErSky9x on Taranis, Sky9x, 9Xtreme radios.
3D-Printing: (https://openrcforums.com/forum/viewforum.php?f=129).


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Kilrah
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Re: 9x FlySky 2.4 module / Antenna soldering connection.

Post by Kilrah » Tue Apr 26, 2016 2:52 am

No. You should not use a multimeter there at all as it can damage the module.

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Re: 9x FlySky 2.4 module / Antenna soldering connection.

Post by bob195558 » Tue Apr 26, 2016 10:08 am

Can I or how should I check for this ?

I am soldering a IPX U.fl PCB Mount Socket connector to a FlySky 2.4 GHz module
and I want to check that I have proper continuity connection with my soldering.
Is there a way to check that the solder connections have not shorted together ? :?:

Bob B.
Er9x on 9x radio, with Smartieparts Programmer and TelemetrEZ Board.
ErSky9x on Taranis, Sky9x, 9Xtreme radios.
3D-Printing: (https://openrcforums.com/forum/viewforum.php?f=129).

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bob195558
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Re: 9x FlySky 2.4 module / Antenna soldering connection.

Post by bob195558 » Tue Apr 26, 2016 7:08 pm

Here are photos showing my soldering:
FlySky Module IPX U fl soldering_a.jpg
FlySky Module with IPX U.fl PCB Mount Socket connector soldered to it.
FlySky Module IPX U fl soldering_c.jpg
FlySky 2.4 GHz. Module
Model: FS-TM002.
My understanding is with transmitters, it is not proper to power them up without an antenna connected to them,
this is because it could damage the transmitter.
Is there a way to check that the solder connections have not shorted together before powering up the transmitter module ? :?:

Bob B.
Last edited by bob195558 on Wed Apr 27, 2016 3:03 am, edited 1 time in total.
Er9x on 9x radio, with Smartieparts Programmer and TelemetrEZ Board.
ErSky9x on Taranis, Sky9x, 9Xtreme radios.
3D-Printing: (https://openrcforums.com/forum/viewforum.php?f=129).

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jhsa
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Re: 9x FlySky 2.4 module / Antenna soldering connection.

Post by jhsa » Tue Apr 26, 2016 7:22 pm

No, on the flysky modules, the antenna looks like a short to the multimeter..
The best is to use a magnifying glass and check your soldering. You can also take a good resolution picture of your soldering and check it on the computer..

João
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Kilrah
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Re: 9x FlySky 2.4 module / Antenna soldering connection.

Post by Kilrah » Wed Apr 27, 2016 12:00 am

When done that way you basically can't. Hope for the best and do a good range test... which is a pain on the lousy FS modules that don't have a range test feature.

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Re: 9x FlySky 2.4 module / Antenna soldering connection.

Post by bob195558 » Wed Apr 27, 2016 2:59 am

Because I have several 9x modules to play with and I have the RF Explorer 6G Combo Spectrum Analyzer, I am going to
try the 9x module with no antenna and power it up to take base line readings with the Spectrum Analyzer.
Then I will re-solder the IPX U.FL connector to this 9x module and then with the Spectrum Analyzer take new
reading with its 2.4 antenna installed.
Also I will take Spectrum Analyzer readings with a different 9x module so to compare readings
between both 9x modules with there antennas installed.
9x Module NO antenna_1.jpg
Spectrum Analyzer readings of 9x Module with NO Antenna.
Resolder the IPX U FL Connector .jpg
Re-soldered IPX U.FL Connector to 9x module.
Add Antenna to 9x module .jpg
Add Antenna to 9x module.
9x module with new antenna.jpg
9x module with new Antenna installed.
9x Module yes antenna_4d.jpg
Spectrum Analyzer readings of 9x Module with 2.4 Antenna.
Different 9x Module with Antenna_a.jpg
Spectrum Analyzer readings of a different 9x Module with 2.4 GHz Antenna.
The results show it is working properly! :D

Bob B.
Er9x on 9x radio, with Smartieparts Programmer and TelemetrEZ Board.
ErSky9x on Taranis, Sky9x, 9Xtreme radios.
3D-Printing: (https://openrcforums.com/forum/viewforum.php?f=129).


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