I'm looking for a tech manual and/or schematic for this rack-mount military-style communications receiver. It was built for the US Coast Guard-Dept. of Treasury and appears in 'Radios by Hallicrafters' by C.Dachis on p.185.(Good book)! I'm having power supply issues. It is a 110 v ac/dc with the legs of the power input going through twin 35Z5GT half-wave rectifiers,one for each leg with lots of capacitive/inductive filtering. My B+ and B- are staying ac and not getting dioded as they should.Loud 60~ hum from speaker. Tubes test good. Caps and coils test good. Thanks.

Walt: you might want to e-mail greg@oldradios.co.nz
They have one pictured on their website: http://www.oldradios.co.nz/index.html
Maybe someone downunder has the schematic for this model.
Steve