[AMPS] Re: ?? on 3-500Zs

[Rich Measures]

>
>>Hi All,
>>    I have a question on using a Eimac 3-500Z  with a 3-500
>>from China. I am going to put them into a Kenwood TL-922.
>>Would I run into any problems doing this?
>
>
>Hi Boyd,
>I just made a visit to RF Parts in San Marcos this past wednesday. I will be
>procuring a new 3-500Z but I am still not sure which brand. The chinese
>tubes labeled "RF Parts Co." have an unconditional warantee for the first
>year and pro-rated the next year. New price is $120 each.
>
>They also have Amperex which are made in France. They sell for $190 per
>bottle and have a 90 day unconditional warantee.
>
>They also carry NOS Eimac 3-500s for $220 each. I do not remember what the
>warantee was.
>
€  A friend of mine tried one Tritons and the anode-cooler spotwelds 
reportedly weakened and broke --  just like later production Varian/Eimac 
3-500Zs.  The Chinese tubes I inspected had good spotwelds.  

>I asked the salesman which brand had the lowest return rate and he said by a
>wide margin the Amperex. He strongly recommended if I was to buy new then do
>NOT buy their own brand or the Eimac--go with the Amperex. 

€  One of the Amperex tubes in my SB-220 was made in 1976.  It still puts 
out full suds.  However, the bias requirement is 0v.   

-  later, Lane


Rich...

R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures  


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