Model Boat Mayhem

Please login or register.

Login with username, password and session length.
Pages: [1]   Go Down

Author Topic: Extending receiver antenna  (Read 2057 times)

terry1956

  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 184
  • Model Boat Mayhem is Great!
  • Location: yeovil
Extending receiver antenna
« on: April 21, 2023, 02:43:59 pm »

Hi chaps. I need to extend by receiver antenna, is there away to do this. If so how. Thanks
Logged

Tug Fanatic

  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 2,490
  • Location: England
Re: Extending receiver antenna
« Reply #1 on: April 21, 2023, 10:41:33 pm »

I will start the ball rolling.


I have never heard of anyone succesfully extending 2.4ghz receiver antenna.
Logged

Circlip

  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 4,559
  • Location: North of Watford, South of Hadrians wall
Re: Extending receiver antenna
« Reply #2 on: April 22, 2023, 11:11:10 am »

Hi chaps. I need to extend by receiver antenna, is there away to do this.


Why?


  Regards  Ian.
Logged
You might not like what I say, but that doesn't mean I'm wrong.
 
What I said is not what you  think you heard.

mrlownotes

  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 414
  • Location: A bit NorthWest Cambridgeshire
Re: Extending receiver antenna
« Reply #3 on: April 22, 2023, 11:32:29 am »

The science behind antenna length is explained in the link below. 
Although on an RC helicopter website, the science is the same for boat systems.

https://www.rchelicopterfun.com/rc-antenna.html

It's a good read but you could skip a bit by scrolling down to 'RC Antenna Length - Mine Is Longer Than Yours'.
It's all about using a tuned length for best reception of the specific wavelength.
Logged
Bintur Ellenbach

JimG

  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 1,310
  • Model Boat Mayhem is Great!
  • Location: Dundee
Re: Extending receiver antenna
« Reply #4 on: April 22, 2023, 11:33:34 am »

A longer aerial can be fitted to a 2.4 GHz receiver, how easy it can be done will depend on the way the aerial is fitted to the receivers circuit board. Some receivers have the aerial mounted using a plug onto the board, in this case it is just simply removing the original and replacing with a longer version. many have it soldered to the board, this can be replaced by carefully unsoldering the old one and soldering the replacement on.A 2.4 GHz aerial is basically a length of coax cable with the screen removed from the end to uncover the inner, the length of the sheilded section is unimportant, only the exposed end need to be the correct length. These cables can be bought from specialist suppliers such as RadioSpares , unfortunately I do not have a link but have seen posts on older forums where modellers have done this. Some radio manufacturers may offer replacement aerials as spare parts and you might find longer ones available.As to why would a longer aerial be needed? Some receivers come with very short aerials which could be under the waterline if the receiver is mounted inside the hull, this will have a large effect on reception as 2.4GHz doesn't pass through water. An extended aerial can be led so that the active section is above the water, in an extreme case a submarine could be able to operate submerged if a longer aerial is mounted to the periscope such that it the end is always above the water at normal operating depths. (The failsafe could be set to surface if the radio loses signal.)
Jim
Logged
Dundee Model Boat club
Pages: [1]   Go Up
 

Page created in 0.091 seconds with 21 queries.