Model Boat Mayhem

Technical, Techniques, Hints, and Tips => Other Technical Questions... => Topic started by: seralph on February 28, 2010, 08:36:16 pm

Title: Antenna Length
Post by: seralph on February 28, 2010, 08:36:16 pm

Hi
Bought a Futaba 4Yf with a R136F receiver for my boat

I assume the antenna wire on receiver is a preset length to optimise reception well My old set up had the antenna wiring running around the boat then going to a whip type aerial 
Now my question is do i cut the length of the whip off the wire thus keeping optimum length ot just connect it straight to it thus lengthing the antenna wire by about 12 inches

Regards Steve

Title: Re: Antenna Length
Post by: Shipmate60 on February 28, 2010, 08:42:05 pm

Keep the overall length the same.
If this includes a whip aeriel cut thid length off the wire.

Bon

Title: Re: Antenna Length
Post by: DickyD on February 28, 2010, 08:47:53 pm

You are going to wish you'd never asked.

Unless you want extreme range ie out of sight, you can get away with running the Rx antenna around the inside of the hull.

I'll leave the others to argue whether you need to alter the length when using a whip aerial, Robbe say you should cut of the same length off your Rx antenna as the length of the whip aerial

Title: Re: Antenna Length
Post by: FullLeatherJacket on February 28, 2010, 08:50:33 pm

Quote from: DickyD on February 28, 2010, 08:47:53 pm

Robbe say you should cut off the same length off your Rx antenna as the length of the whip aerial

So do Davee and Bobbe!
FLJ

Title: Re: Antenna Length
Post by: DickyD on February 28, 2010, 08:54:38 pm

Cant believe it three people in agreement, it must be a record on here. O0

Title: Re: Antenna Length
Post by: malcolmfrary on March 01, 2010, 05:13:36 pm

Four.
The RX maker decided the best length for the aerial.  If adding a new bit, remove that length from the wire to keep the same overall length.

Title: Re: Antenna Length
Post by: seralph on March 01, 2010, 05:58:42 pm

Thats what I thought but best to check before I go chopping things up
Cheers Guys

Regards Steve

Title: Re: Antenna Length
Post by: modelboatbits on May 02, 2010, 05:16:43 pm

Yep,

I reckon they are correct, That is what I work to.


Steve <*<

Title: Re: Antenna Length
Post by: Tugwilson on May 14, 2010, 01:16:23 pm

you may find this helpfull it's what i use'

http://www.csgnetwork.com/antennagenericfreqlencalc.html

regards tugwilson