[Amps] Matching 3CX800A7's for Alpha 87

Carl km1h at jeremy.mv.com
Thu Dec 9 16:40:11 PST 2010

It sounds like the CFO figured a new scam to make money.

Pretty soon the other companies will jump on the gravy train.


----- Original Message ----- 
From: "Dennis Mowers" <k5ya at gvtc.com>
To: <amps at contesting.com>
Sent: Thursday, December 09, 2010 5:03 PM
Subject: [Amps] Matching 3CX800A7's for Alpha 87

> RF Concepts says:
>> *When you purchase a matched set of tubes from RF Concepts, they have 
>> actually been matched!  The tube(s) in a new Alpha amplifier have been 
>> installed, tested, burned in, and tested again.  Those tubes are 
>> warranted.  If you replace those tubes with others during the warranty 
>> period, RF Concepts is not responsible for any damage caused by those 
>> tubes and the damage will not be covered under warranty.*
> What are the consequences of using a pair of tubes that have not been 
> matched?  Alpha radio makes it sound like a disaster is likely.
> What are they matching?  Grid current vs. output  would be my guess.
> Anyone had a failure using a new pair of tubes that haven't been matched?
> Thanks
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