Harlie Wave-Selector

Harlie Wave-Selector
Your need is selectivity- You want to cut out completely interfering stations, either Local or Distant and to receive any station desired. You can do this in a minute by fitting the Harlie Wave-Selector between your Aerial and Set. It increases volume too! Whatever Set or Aerial you may have, the Harlie Wave-Selector will increase its selectivity, range and volume. You must at least try out this wonderful Wave-Selector.
No alteration to set just plug aerial into socket provided.
Black crystalline finish throughout.
Two Models Supplied;

• Normal Waveband, 200-700 metres.
• High Waveband. 700-2000 metres.

Price 12s 6d in 1928

Modern Wireless, Dec 1928, page 700.

In questo link sono elencati 8 modelli, di cui 6 con immagini e 0 con schemi.
Elenco delle radio e altri apparecchi della Harlie Bros.Ltd., London