Help! FT Stem 2Ch EZ Receiver Lost its Antenna… Pinout Available?

[SumnerCorePlus]

Hi there, I work with a program that purchased the FT Stem EZ Flyer kits for our HS.

One of our 2Ch Stem V2 receivers lost its antenna and we are trying to give it a new one, but I am not sure which pad to attach a new antenna to. If there’s a technical drawing or pinout for this receiver or if someone is able to guide me to which pad I should be connecting to, that would be awesome.

Thanks,

Nick

 

[AIRFORGE]

 

[SumnerCorePlus]

View attachment 243999

Hey there, thanks. What part is the red line indicating? I couldn’t miss the big red circle though 😂

 

[SumnerCorePlus]

Hey there, thanks. What part is the red line indicating? I couldn’t miss the big red circle though 😂

I’m doing some research as I go and I hear soldering antennas on isn’t best practice

 

[AIRFORGE]

Hey there, thanks. What part is the red line indicating? I couldn’t miss the big red circle though 😂

That's called an "accident". Oops! LOL!

 

[AIRFORGE]

I’m doing some research as I go and I hear soldering antennas on isn’t best practice

I would agree if this were a receiver for a larger more important plane.
What is your soldering experience?

 

[SumnerCorePlus]

I would agree if this were a receiver for a larger more important plane.
What is your soldering experience?

First time soldering. I soldered a new wire on in the picture I posted, but the new cable doesn’t seem adequate, so I’m gonna spring for some actual 2.4GHz antennas and try again.

I heated the pad, tinned the cable, then joined them together, hopefully real antenna should solve the issue.

 

[ZetaPirate]

Along these same lines, is there a layout for this board? I'm curious about the plugs not used for the EZ kits.

 

[LitterBug]

There are two motor sockets, and the other two sockets are for LEDs.

 

[ZetaPirate]

There are two motor sockets, and the other two sockets are for LEDs.

Thank you. The official response I got was that they don't have any kind of layout, so I'm glad someone knew. Lol

 

[PeterG]

Not sure if I should reply here or start a new thread, but I have students who are losing the antennas on thier EZ boards.

Sometimes they recover the antenna and report success soldering it back on, but recently the antennas have gone AWOL.

What kind of wire would I need to get to replace these?

Is it really as easy as soldering a wire?

 

[Piotrsko]

Full length, full wave resonant 2.5 ghz antenna is like .3" long. ( don't make me do the antenna resonance math for the exact answer) Anything about 3" long that solders to the pad will work, but you want like 30 gauge with a heavy insulation for structural pull proof. Won't be full resonant, but you're staying line of sight and yes it is as easy as just soldering a new piece back on. just range test it before you install the radio in a plane. Sometimes the wire you choose has a hidden break in the middle. If it broke off, assume it is broken somewhere else you cant see.