I would get these myself, but I believe I will be making my own, as a friend of mine gave me about 25 dud octal tubes with nice bases... 73 Bill KE9XQ http://www.ebay.com/itm/15-Bud-Senior-Plug-in-Coils-Regenerative-Radio-Tube-Radio-Ham-Receiver-Antique-/291044591896?pt=LH_DefaultDomain_0&hash=item43c39c0918 291044591896