You also might find some assistance from members of a vintage radio club in your area...many members may also do TVs, have parts and test equipment. Most have fine "swap meets".
Virginia Tidewater Antique Radio Association (TARA)
Phil Stroud,
2328 Springfield Ave.
Norfolk, VA 23523
Radio History Society, Inc. (RHS)
Steve Snyderman
4147 Lenox Dr.
Fairfax, VA 22032.
Dues: $15.00 and up (various membership levels).
From:
http://www.grillecloth.com/other/clubusa.php#va
jr