Don, Paul -
Agreed! IF you have 'new' tubes, there is nothing wrong with replacing
an existing tube, readjusting the appropriate alignment, and seeing if
the 'new' tube is better! If it IS better, decide if it's enough better
to warrant the change, and put the 'other' tube in the spares stash. If
no change, leave the original in place and know that you have a tested
spare available.
The most troublesome tubes in the 2-B are the 6U8, (replace with 6EA8,)
and the 12BA6s, which get 'gassy', sometimes even NOS. A 6U8 may result
in a 'dead' 40M crystal, and gassy 12BA6s result in 'wandering' AVC.
Also, don't let them sell you a 6BN8, it MUST be an 8BN8. If you want
the reason why, see my article on WB4HFN!
Certainly an 'iconic' receiver, one of the best ever made by anybody!!
73, Garey - K4OAH
Glen Allen, VA
Drake 2-B, 4-B, C-Line& TR-4/C Service Supplement CDs
<www.k4oah.com>
[email protected] wrote:
Just received Drake 2B s/n 2052. It's in quite nice condition for
a radio of that vintage and seems to work just fine, plenty of signals
audible and it is stable, no odd smells of overheating, etc. FP &
cabinet are clean with only a few minor paint dings along the front
edge of the cabinet. The chassis is clean, no obvious serious rust or
corrosion, just that greenish patina that copper develops over the years.
The previous owner had the receiver for many years (although not
the original owner) but used it only rarely and never had it serviced
or aligned. For all I know it may still have all the original tubes
(the ones I can see without removing the cabinet say "RCA").
Plan is to do some light cleaning of the cabinet & FP (very little
required), install a re-cap kit, Deoxit the switches & pots, install a
new tube set (keeping the old ones as spares), and touch up the alignment.
This radio is actually probably older than my first 2B, which I
bought (IIRC) in '63. I've owned a couple of others since but
stupidly let them get away, so this one is a "keeper". :-)
Paul, K4MSG
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