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[AMPS] SB-220: Operate/Standby Switch

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Subject: [AMPS] SB-220: Operate/Standby Switch
From: philk5pc@tyler.net (Phil Clements)
Date: Sat, 3 Feb 2001 19:47:45 -0600
> Anyway, this tube has 8043.8 hours on it.  I put them all on it myself.
> Still cranks out the same power today as it did 8 years ago.  In
> actuality, I doubt that it's ever been hit with RF drive within 10 or so
> min of turn-on.  The fan/fil timer does time-out, allowing HV to be
> turned on, in 62 sec however.

The limitation is no RF for 3 minutes on a 8877.
All of Alpha's 8877 amps apply H.V. @ turn-on.
The 3 minute timer is in the key-line.
Cathode damage will take place if the above limitation is not heeded.

(((73)))
Phil, K5PC




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