Like Tree1Likes
  • 1 Post By Roelof

Coax antenna length?

Reply

Old 05-02-2018, 03:28 PM
  #1  
Tech Elite
Thread Starter
 
sosidge's Avatar
 
Join Date: Dec 2001
Location: Bristol, UK
Posts: 3,899
Default Coax antenna length?

I bought a generic 2.4ghz antenna to replace the damaged one on my Futaba receiver.

I've noticed it is only about 2/3rds of the length of the original Futaba antenna? Do any of the radio experts know if this will cause a problem? Seems OK in my house.

I also replaced the transmitter antenna at the same time as that was actually completely broken where the antenna folds for storage (not a great bit of design, I don't know why Futaba insist on fitting these external transmitter antennas). I've re-routed the replacement inside the case, away from the other components - again, any thoughts if this will cause a problem?

Thanks
sosidge is offline  
Reply With Quote
Old 05-02-2018, 03:55 PM
  #2  
Tech Champion
 
Roelof's Avatar
 
Join Date: Aug 2007
Location: Holland
Posts: 7,249
Default

It is all about the blank end piece, that is the actual antenna an needs to be arround 3.25cm long (1/4 wavelength), the rest is just a coax cable to the antenna like the coax cable at home from the tv to the aireal antenna or satelite dish outside.
sosidge likes this.
Roelof is offline  
Reply With Quote
Old 05-03-2018, 01:05 PM
  #3  
Tech Champion
iTrader: (152)
 
Krio's Avatar
 
Join Date: Mar 2008
Location: At dirt tracks in Michigan!
Posts: 5,448
Trader Rating: 152 (99%+)
Default

Krio is online now  
Reply With Quote

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off


Thread Tools
Search this Thread

Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service