pentalab escribi:
Reid Brandon at Eimac phoned me today. Reid passed this important info along. The correct phone number for Arnold Howell [KB8JCY] of Howell Tube Sales is 330-744-7582. Make sure to *82 1st... to shut OFF your call block [if u have auto block]. Arnold returns calls fairly promptly. Also, Arnold Howell's CORRECT e-mail address is ... KB8JCY @ AOL.com His snail mail address is PO Box 5842, Youngstown, OHIO, Zip- 44504 He has NO website.
Also had Arnold Howell himself, phone me this afternoon. Howell had Eimac build a... "hot rod" version of a 3CX-1200.... called a YU-
120. This is the 1500w anode dissipation version... with a 6.3 V @ 26 A filament. There is also another version... called a 3CX-
1500D7. The 1500D7 version is the same 1500 w anode dissipation.... EXCEPT the fil is 5.0 V @ 30 A. BOTH versions of these tubes are thoriated tungsten fils, instant on, and both use a SK-410 [or any version of a 3-500Z socket, like the Johnston] socket. He also has the custom Teflon chimney's for them.
How will perform the socket contacts at such filament current??. With only 15A (3-500z) I've seen many contact failures, so I figure with that tube it will be a must to blow air directly to the pins.
Bewt regards
Guillermo - LU8EYW.
