[Heathkit] Tubes for SB-200

[jeremy-ca]

Cetron USA has been gone since the early 90's. GE and Raytheon had a line 
for awhile and all 3 made private label for amp manufacturers. All are high 
quality if you can find them.

Chinese tubes have come a long way in the past 5 or so years. I buy 
unbranded ones off a guy that sells on Ebay, I think they are $75 a pair. 
Never had a problem and they work great even on my 6M conversions. Taylor, 
RF Parts, new Cetron, Jolida, unbranded, etc are all from the same Chinese 
factory; just like Cetron used to do. Buy enough and you can get your own 
name on them.

Carl
KM1H



----- Original Message ----- 
From: "Peter Markavage" <manualman at juno.com>
To: <Heathkit at mailman.qth.net>
Sent: Monday, June 04, 2007 3:29 PM
Subject: Re: [Heathkit] Tubes for SB-200


> And they don't have to be "matched". Same brand is good but matching is
> not necessary if you're buying them new. I've never ever bought a pair of
> matched tubes for anything and all the equipment worked fine.
>
> Pete, wa2cwa
>
> On Mon, 4 Jun 2007 15:21:17 -0400 "George Allgood"
> <Myp4k69 at bellsouth.net> writes:
>> Kenneth,
>>
>> Try this website
>>
>> http://www.rfparts.com/tubetran.html
>>
>> Matched pair of Taylor tubes is $89. and change.
>>
>> Geo.
>> ----- Original Message ----- 
>> From: "Kenneth G. Gordon" <kgordon2006 at verizon.net>
>> To: <Heathkit at mailman.qth.net>
>> Sent: Monday, June 04, 2007 3:14 PM
>> Subject: [Heathkit] Tubes for SB-200
>>
>>
>> > 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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