[Amps] 2 x 8877

Mike McCarthy, W1NR w1nr at eecorp.com
Sat Feb 28 09:26:14 EST 2004

The Alpha SX had issues on 10M because of the capacitance of the two
tubes.  Also, 2x8877 is more expensive than 3x3cx800.  With the 3cx800,
the plate voltage is lower, required capacitance is lower, voltage
ratings of tank components is lower translating into a more cost
effective design.

Still, nothing impresses me more, at least visually, than a pair of
4-1000's built into a cabinet with windows...

Mike, W1NR

-----Original Message-----
From: amps-bounces at contesting.com [mailto:amps-bounces at contesting.com]On
Behalf Of P. Coppin
Sent: Friday, February 27, 2004 8:29 AM
To: Amps at contesting.com
Subject: [Amps] 2 x 8877

First of all, sorry for my poor english.

I would like to know the reason why the amps manifacturers build linear
using three 3cx800a7, 2 3cx1200a7, one 3cx3000a7 and ruskies but no one
build a linear amplifire with 2 3cx1500a7 (8877) such as the Alpha sx.
What problems they could have ?

Paul i8ixo

Amps mailing list
Amps at contesting.com

More information about the Amps mailing list