Geeeeez! Sorry for your confusion. The "It" in the sentance referred to the preceeding noun, that being "receivers", meaning that the "Sensicon A" series receivers all had miniature tubes. The receiver I think you have, a 13V(A), has all "Loctal" tubes (do yo know what they are?). As I asked earlier, What is the model number stamped on the front panel? George
--- In [email protected], "Rod Shaner" <[EMAIL PROTECTED]> wrote: > > That's really weird, because it's all enclosed in a metal box, and the > only visible connector is a RCA connector on each end! There doesn't SEEM > to be any plethora of tube supply wires, etc..I'll have to look again. > R. > > On Sun, 18 Feb 2007 22:53:30 -0500, George Sintchak <[EMAIL PROTECTED]> > wrote: > > > The K-8436-A Permakay filter (first generation)was the large sized > > 455 kHz unit that was used in the "Sensicon A" series receivers. It > > had all miniature tubes. That filter was superceeded with the TU455 > > series (smaller size - 2nd generation) 455 kHz filters used in > > the "Unichannel G" (and other) series receivers. > > George > > > > --- In [email protected], "Rod Shaner" <kb8fly@> > > wrote: > >> > >> How about this: > >> Filter number on I.F. is K-8436-A. Possibly K-6436-A (hard to > > resolve > >> whether it's an eight or a six.) > >> > >> Another idea: > >> How about using enough preamps that the selectivity is increased > > and > >> sensitivity (spread) is decreased? > >> As I understand it, the receiver is too broadbanded at present by a > > factor > >> of 3. <<<SNIP<<<

