SB-200 tubes.

[john]

I'll second Chucks suggestion... Frank is a nice guy to do business with 
and has a lot of inventory.

73
John K5MO


At 03:46 PM 6/5/2007, you wrote:
>Hi Ken,
>
>I recently refurbished my SB-200................It's like new now and will 
>last for another 40+ years (longer than I will).
>
>Some suggestions:   For tubes, contact Frank, K5SVC.  E-mail address 
>is:  K5SVC at Natchez.net
>
>I've purchased tubes from him for my Collins and most recently a pair of 
>572B's for the SB-200.  He has been very reliable and I would try him 
>before anyone else.  BTW, replace your 572B's with, .............. 572B's.
>
>If your SB-200 is original and has no mods.............consider upgrading 
>the rig with a new power supply board and a soft-start relay module from 
>Harbach Electronics.  Contact Jeff, W8CQ, at:
>info at harbachelectronics.com    Again, a reliable source with excellent 
>parts.  Your SB-200 will emerge better than new.
>
>And one other thought.  If you subscribe to Electric Radio, check out the 
>article in the April 2007 issue (#215) on aligning the input coils.  Many 
>of us have already done this, but WD8DWR took the time to write it down 
>for all to benefit from and Ray published it for all to see.
>
>Those of us who own SB-200's already know it's a great amplifier and that 
>it can be improved with little effort.  The Harbach mods are excellent.
>
>I don't have financial interests in the above mentioned 
>parties.............but I've done business with them and they are tops in 
>my book.  I'm just an OT ham who loves boatanchors.
>
>Hope this helps.
>
>73 de W4MIL
>Chuck
>
>
>-----Original Message-----
>From: Kenneth G. Gordon <kgordon2006 at VERIZON.NET>
>To: HEATH at LISTSERV.TEMPE.GOV
>Sent: Mon, 4 Jun 2007 3:14 pm
>Subject: [HEATH-TEMPE] SB-200 tubes.
>
>
>
>
>
>
>
>
>
>
>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
>
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