Blogs

Low cost ($60) 2.4 G Computer Transmitter with Dual Receiver antenna question...

Posted by Tom in NOVA on June 6, 2009 at 12:00am

6ch24gradiomanualen.pdfI just purchased this low cost 2.4 G Computer Trasmitter/Dual Receiver that is cheap because it does not have the LCD, etc. adjustments built in, but uses your computer to set up and change the settings. It's seems similar to the FASST or Spektrum. (Here is another place to get it from)Of course I promptly broke off the small (about 2 inches) antenna wire on the receiver. My question, before I solder it back: can I add a longer length antenna to replace the broken one (since I will need to take it apart anyway) so I can potentially increase range? If yes, it would increase range, how long of an antenna should I make (between 5-12 inches)?Thank you,Tom
E-mail me when people leave their comments –
Follow

You need to be a member of diydrones to add comments!

Join diydrones

Comments

  • Developer
    Mark Colwell June 6, 2009 at 7:02am
    Add a small piece of heat shrink tube after solder repair as a strain relief, to help prevent future breakage, i had same problem with spectrum rx
  • Peter Seddon June 6, 2009 at 6:35am
    I would replace the broken antenna with the same length as at these frequencies it starts to become critical. The length affects the reception pattern as well.

    Peter
  • Tom in NOVA June 6, 2009 at 3:00am
    Gary & James.... thanks both. Is there an advantage of having a full-wave instead of half-wave antenna?
  • Moderator
    Gary Mortimer June 6, 2009 at 2:01am
    Heres a good calculator for antenna length http://www.qsl.net/w4sat/halfvert.htm

    Heres a very famous 2.4ghz antenna http://www.saunalahti.fi/elepal/antenna2.html not suitable for this purpose.
  • James Cohen June 6, 2009 at 1:16am
    Hi Tom,

    $60 sounds like a steal, it'd be good to hear how it performs.

    Antennas work best when their length is matched to the frequency they're working on (transmitters tend to be more sensitive . Doing some quick calculations for 2.4GHz shows that a half-wave is about 2.5 inches.

    Full wave:
    30000 / 2400 = 12.5cm = 4.92in

    So a half wave is: 6.25cm = 2.46in

    Either of those should work.
This reply was deleted.