17 Feb
2010
17 Feb
'10
1:19 a.m.
David Griffith wrote:
Slightly related is the subject of tubes in radios. I
get a kick out of
using tube radios. One big problem though is that there is no source of
brand-new tubes anymore. It's all new-old-stock. Tube-amp enthusiasts
have a ready supply of newly-manufactured tubes from a small variety of
eastern European makers, but those are almost entirely unsuitable for
making radios. I really wish some of these makers could be convinced to
make new signal tubes. I like my new-old Philco, but the fact that it
uses loktal tubes gives me an icky feeling when using it. Nobody is
selling AA5 loktal lineups on ebay.
Well the REAL AA5 radios used what ever was CHEAP at the time.
Tubes I have seen around, quality AM RF & IF transformers are
the problem -- none around! Soon now no music - just stupid talk
shows.
Ben.
PS. I read just recently they reduced the bandwith on BCB (am)
so you could jam in more radio stations. 15KHZ (1930's)
now down to 10 KHZ (1990's).