www.immersionrc.com

Page 1 of 2 12 LastLast
Results 1 to 10 of 15

Thread: 600mW Busted antenna

  1. #1
    Navigator
    Join Date
    Jun 2012
    Posts
    132

    600mW Busted antenna

    Hi Guys,
    I had a little crash with my mini quad in tall grass.
    No idea how it broke off, but it did.
    Just want to know if it can be fixed.
    In the pics, you'll see that at least one of the tracks was pulled off.
    It was powered up for about 15mins without the antenna until i found it.
    Send it in? Or just buy a new one?
    I live in Spain.
    Cheers guys.





    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	VTX1.jpg 
Views:	360 
Size:	99.2 KB 
ID:	55450   Click image for larger version. 

Name:	VTX2.JPG 
Views:	347 
Size:	76.0 KB 
ID:	55449   Click image for larger version. 

Name:	100_3493.JPG 
Views:	468 
Size:	371.9 KB 
ID:	55451  

  2. #2
    Navigator CAMOMAN's Avatar
    Join Date
    Aug 2014
    Posts
    173
    Exact same thing happened to me! Doesnt look to fixable! Pulled the traces straight off the board. I just went ahead and ordered another so I could still fly hoping someone would come up with a quick fix!!

  3. #3
    Navigator
    Join Date
    Aug 2012
    Location
    Rancho Cucamonga, Ca. USA
    Posts
    877
    Scratch the green solder mask off the gnd plane and then solder it back on. Make sure the center conductor has good solder contact to it's trace. Once that is done, if you have an IRC RF meter, go ahead and hook it up to make sure you have power levels close to 600mW or more. Then go have fun with it.

  4. #4
    Just dog tired. Wearyman's Avatar
    Join Date
    Mar 2011
    Location
    Buffalo, NY, USA
    Posts
    2,101
    I disagree. The traces are clearly still attached. (Note the gold/brass color in the contact areas.) All you need is a fine-tipped soldering iron, a steady hand and a quick solder job. No problem.

    Now, it does look like one of the traces is detached on one END. (Second photo, far right contact) Again, this is easily fixable with a bit of solder to re-attach it to the rest of the contact. Gentle and quick work with a fine soldering iron should fix that.

    Of course, I am assuming that you own a soldering iron and know how to use one. If not, now is the time to learn. FPV REQUIRES knowing how to solder. You will have to repair and create many of your own solder joints in this hobby. So, go get yourself a good quality soldering iron, a selection of tips and a helping hands ASAP, then spend some time learning how to solder.

    Once you have the basics down, and have made a couple practice soldering joints you are ready to repair that PCB. Go for it!
    FPV - The World is My Airfield

  5. #5
    His Royal Sassiness ssassen's Avatar
    Join Date
    Feb 2011
    Location
    Netherlands
    Posts
    9,693
    Quote Originally Posted by Wearyman View Post
    Once you have the basics down, and have made a couple practice soldering joints you are ready to repair that PCB. Go for it!
    With that motivational post I really feel like soldering something
    Velvety smooth drone pilot for hire

  6. #6
    Instructor Pilot Channel 1's Avatar
    Join Date
    Nov 2013
    Location
    Out in the middle of nowhere.
    Posts
    4,885
    Quote Originally Posted by Wearyman View Post
    I disagree. The traces are clearly still attached. (Note the gold/brass color in the contact areas.) All you need is a fine-tipped soldering iron, a steady hand and a quick solder job. No problem.

    I agree, that looks like an easy repair if one knows how to solder. You are going to need to obtain a new SMA connector though as you busted off one of the ground lugs from the old one.

    Now, it does look like one of the traces is detached on one END.


    The trace is probably undamaged because what you are seeing is the broken off ground lug of the SMA connector which remained soldered to the board.


    Also you will need to file the center pin of the new SMA to give a flat spot to solder to the PC board land.


    Wayne
    Everybody loves a bunny.

  7. #7
    ImmersionRC Support Guru swillhide's Avatar
    Join Date
    Aug 2012
    Location
    Mountain House, Ca
    Posts
    8,443
    The traces are toast but they are fixable cause I do it all the time. Scratch the green off and go, as for the grounds its been my best results to also scratch the inside green that is very close to the old element trace.
    AMA # 1015480 HAM Callsign # Procrastinating..
    Futaba 9c w/Ezuhf /Skywalker 1880 or anything else that I can Lawn Dart.
    Retired: Disco(Sold), Skywalker 1900(Dirt Nap), Qav540g/Nazav2/Iosd mk2

  8. #8
    Navigator CAMOMAN's Avatar
    Join Date
    Aug 2014
    Posts
    173

    600mW Busted antenna

    anyone got a part # for the sma bulkhead and are all 4 outside post common to ground of board or are they isolated as just anchors to the board? I realize the center post is the rf signal.. Im at work and not close to the vtx
    Last edited by CAMOMAN; 3rd December 2014 at 03:18 PM.

  9. #9
    FPV Freak
    Join Date
    Jun 2013
    Location
    Trinidad & Tobago, WI
    Posts
    588
    Make sure to put some epoxy after the soldering job. i have done it on all my EZUHF receivers and IRC transmitters after i busted the 600 mw Trx and couple of Receivers the same way.
    It doesn't really effect the signal but add a lot of strength to it..
    ZII (1.3 GHZ) (40.1 km), Hercules Pusher (1.3 GHZ) (23.8 km), Sky Hunter (1.3 GHZ) (19.9 km), Deep Reaper (1.2 GHZ) (13.4 km), Penguin (1.2 GHZ) (10.5 km), ZIII (1.3 GHZ), Titan (1.3 GHZ) (LOS low altitude), BobCat pusher (5.8 GHZ) (LOS), Assassin 5.8 Ghz)
    DJI Flamewheel 450 (1.3 GHZ), DART 400 1.3 GHZ, DART 250 5.8 GHZ

  10. #10
    Navigator
    Join Date
    Jun 2012
    Posts
    132
    Thanks for all the comments.
    I do have "some" soldering skills but for bigger stuff than this.
    The centre trace in the second photo is completely gone, so I guess the scratching off the green paint trick needs to be done.
    Yes the SMA connector is broken, so i'd need a new one.
    So Better soldering iron + new SMA + a bit of luck = might work, if I didn't fry anything else.
    Or send it to someone with better skills than me, or buy a new one LOL

Similar Threads

  1. Replies: 11
    Last Post: 21st June 2014, 07:53 AM
  2. Broken Antenna SMA on 5.8GHz 600mW Tx
    By Hotspur in forum ImmersionRC
    Replies: 0
    Last Post: 11th June 2013, 12:32 AM
  3. 5.8Ghz 600Mw Antenna Broken
    By pabbas in forum ImmersionRC
    Replies: 7
    Last Post: 26th September 2012, 10:41 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •