Model Boat Mayhem

The Shipyard ( Dry Dock ): Builds & Questions => Navy - Military - Battleships: => Topic started by: bertie on May 09, 2017, 07:23:12 pm

Title: WW ll patrol boat antenna
Post by: bertie on May 09, 2017, 07:23:12 pm

Can some one please tell me the name of the aerial antenna seen on British in shore vessels, it looks like a series of wires going to the top of the mast with the wires kept apart with rings
Thank you

Title: Re: WW ll patrol boat antenna
Post by: C-3PO on May 09, 2017, 07:49:36 pm

Cage antenna?

Title: Re: WW ll patrol boat antenna
Post by: John W E on May 09, 2017, 08:03:15 pm

hi there

Are you referring to the long range aerials which are seen on some of the 2nd World War Air Sea Rescue Launches?   These have either a wooden or ceramic insulating ring to keep the 4 wires separated - as in this photograph hopefully.   Or, are you referring to the bird type cage - as in this link

http://www.modelboatmayhem.co.uk/forum/index.php/topic,20758.msg343555.html#msg343555

john

Title: Re: WW ll patrol boat antenna
Post by: g6swj on May 09, 2017, 08:57:02 pm

Cage Dipole Aerial?

RAF Example below with explanation as to the Multi wires

The Eight-wire Cage Full-wave Dipole Aerial.

The eight-wire cage full-wave dipole aerial was widely used by the RAF for both transmitting and receiving. The cage form of the aerial gave it a greater bandwidth than a single wire aerial and also gave it a greater power handling capability. Its feed impedance of about 600 ohms enabled it to be connected to the standard RAF open wire feeder systems. The aerial elements were constructed using 100lb per mile copper wire.

(http://www.hariggers.co.uk/Images/8wae3.jpg)

Title: Re: WW ll patrol boat antenna
Post by: bertie on May 10, 2017, 08:49:12 am

Thanks guys, it's the cage dipole aerial I was after, now I know.
Thanks once again