I came across the K5BCQ HBR Receiver Web Site noting info on ?
"These are the tube type HBR-14, HBR-16, HBR-8, HBR-11, HBR-12, and HBR-13C receivers originally published in QST. Parts, and sometimes-entire receivers, can be found at swap fests, on e-Bay, and through the various Internet reflectors. There is an HBR Receiver reflector on Allan Waller's qsl.net server. The HBR Receiver Web Site has an abundance of information for those interested and details on how to join the HBR reflector. The "Hints & Kinks and Construction Notes" section includes useful data, applicable to ANY tube equipment."
The GoTo LINK is http://www.qsl.net/k5bcq/HBR/hbr.html
73 de WA2ONH Charlie