British Vintage Wireless - Gambrell Brothers Plug In Coil

The Gambrell coil was different to other makes at the time because the coils were wound in separate, spaced layers and not on top of each other as in a honeycomb coil. The ribbed pattern that you can see in the photo are from the ebonite strips that hold the layers in place. Gambrell patented this method of construction and a review of it was printed in Wireless World (dated September 1923). Click on the image shown top right to read it.

Both the front and back casing is made from ebonite. Different ranges were available and prices varied from 5 shillings and 9 pence up to 19 shillings depending on the wavelength required. The advert shown bottom right is taken from Modern Wireless magazine dated December 1923. A scan of the leaflet that came in the box advertising the Gambrell Centre Tapped Coil Holder is shown middle right.



© 2008 www.valve-radio.co.uk	Gambrell Brothers Plug In Coil The Gambrell coil was different to other makes at the time because the coils were wound in separate, spaced layers and not on top of each other as in a honeycomb coil. The ribbed pattern that you can see in the photo are from the ebonite strips that hold the layers in place. Gambrell patented this method of construction and a review of it was printed in Wireless World (dated September 1923). Click on the image shown top right to read it. Both the front and back casing is made from ebonite. Different ranges were available and prices varied from 5 shillings and 9 pence up to 19 shillings depending on the wavelength required. The advert shown bottom right is taken from Modern Wireless magazine dated December 1923. A scan of the leaflet that came in the box advertising the Gambrell Centre Tapped Coil Holder is shown middle right. .