Tubes
	Tubes used in the various Equasonne models are no longer manufactured.  You must either obtain ‘used’ tubes that have been pulled out of some other less fortunate radio, or New Old Stock (NOS) tubes (tubes which have never been used, but rather have been sitting around, probably in their original boxes, for 70+ years waiting to be used). Although you might get lucky and come across some old vacuum tubes at a flea market, auction, thrift store or something of that nature, it might take some time to come across appropriate tubes for the Equasonne this way, as they are pretty ancient. Tubes can be obtained from several on-line stores, which often test and guarantee the tubes they sell for some period of time at least. Some on-line Sources for tubes: Antique Electronic Supply, Tempe, Arizona Tubes Tubes Tubes, Orono Maine Play things of The Past, Cleveland, Ohio I will add more as I find them.  Since most of the tubes used in Sparton Equasonne radios are quite rare and in short supply, store inventories change rapidly, so you might have to hunt around a bit.  Tubes are often available on ebay.