- Original Message - From: Paul Christensen w...@arrl.net
To: topband@contesting.com
Sent: Wednesday, November 14, 2012 7:23 PM
Subject: Re: Topband: 8877 Tube
Bob,
A non-issue. Many of us have been running 8877s with Ep of 4KV. For
example, the typical no-load Ep of an Alpha 77Dx/Sx
Wonder if someone can help with a technical question with the amp I use on 160
meters.
The Spec Sheet for the 8877 tube lists the Absolute Maximum Plate Voltage of
4000 Volts for the tube, and also says in typical operation the plate
voltage is between 2700 and 3500 volts. In my amp (Ameritron
To: topband@contesting.com
Sent: Wednesday, November 14, 2012 6:56 PM
Subject: Topband: 8877 Tube
Wonder if someone can help with a technical question with the amp I use on
160
meters.
The Spec Sheet for the 8877 tube lists the Absolute Maximum Plate Voltage of
4000 Volts for the tube, and also says
The Spec Sheet for the 8877 tube lists the Absolute Maximum Plate Voltage
of 4000 Volts for the tube, and also says in typical operation the
plate voltage is between 2700 and 3500 volts. In my amp (Ameritron
AL-1500), the plate voltage is 3750. My question is - should I be
concerned (it's
Sent: Wednesday, November 14, 2012 6:56 PM
Subject: Topband: 8877 Tube
Wonder if someone can help with a technical question with the amp I use
on 160 meters.
The Spec Sheet for the 8877 tube lists the Absolute Maximum Plate
Voltage of 4000 Volts for the tube, and also says in typical
w...@arrl.net; topband@contesting.com
Sent: Wednesday, November 14, 2012 8:10 PM
Subject: Re: Topband: 8877 Tube
Bob and Paul, The 8877 has a 5 volt filament. The 3CPX1500A7 has a 5.5 volt
filament. Many have been running the 8877 and 3CPX1500A7 with
a Peter Dahl transformer at over 4kV
