[Heathkit] Tubes for SB-200

[Peter Markavage]

The Svetlana versions were designed mostly for audio applications. RF
Parts is a good source or put out a want on the various reflectors.
572B's were used in a lot of amplifiers over the last 30 years. I bet
there's a bunch gathering dust on someone's shelf.

Pete, wa2cwa
 
On Mon, 04 Jun 2007 12:14:40 -0700 "Kenneth G. Gordon"
<kgordon2006 at verizon.net> writes:
> Which tubes would you recommend to replace the two  572Bs in 
> my SB-200?
> 
> AES has them at $169.00 each, but a pair of those would cost 
> more than the amp.
> 
> I haven't been able to find out whether or not Cetron is still in 
> business.
> 
> The Svetlana versions appear to have rather small plates and 
> higher mu, so may not work correctly in the SB-200
> 
> The Chinese tubes are certainly inexpensive, but I have not been 
> able to find out anything about their reliability, etc.
> 
> Suggestions?
> 
> Ken Gordon W7EKB