Page 39 of 39 FirstFirst ... 29373839
Results 381 to 384 of 384

Thread: CPATCH12: The most compact long range 1.2GHz antenna

  1. #381
    As I like to make stuff and save some cash along the way, I thought I'd build a CPATCH12 clone.

    I do believe it's built well??? as the video at times is fantastic!???
    And I've seen some that are hacked up and still work well?
    I'll post the video soon. :-(

  2. #382
    Here's the video...

    If anyone has any ideas????
    Please help????

  3. #383
    Navigator ABL's Avatar
    Join Date
    Feb 2012
    Lithuania, Vilnius
    Hm, you probably messed up distance between ground plane and patch with 3D printed stuff and reversed backplate. Hard to tell without measurements, but this antenna isn't very wideband - so need to build precisely.
    Try to reverse ground plate (foil should look inside); also, which antenna on plane?

  4. #384
    Hi ABL,
    Thanks for the reply...

    The distance is a perfect 15mm as detailed in the website I got the drawings from...
    The original patch from CW has the copper foil facing rearward and I stuck to the dimensions exactly.

    The ground plane is connected to the ground element of the coax cable...

    I actually think I have found the problem. Look at the video and it's fine until I move the plane....
    On the bench, I removed the 5.8 relay and plugged a monitor into the VRX.
    Great picture but when I picked up the plane... the image went bad again...
    I then played with my leads in the model and I got the picture to go from good to bad to all gone and back again...
    I am convinced that the issue is actually the leads...???
    I could of course be wrong but I am making a new lead set up and I'll report back...

    Thanks again.


Similar Threads

  1. Long range fpv antenna installation
    By nghfpvlab in forum NGHobbies
    Replies: 8
    Last Post: 12th April 2014, 11:27 AM
  2. Show your Long Range Antenna mounting/placement on Quad
    By Stiefel in forum FPV Long Range
    Replies: 2
    Last Post: 7th May 2013, 11:02 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