W8TN's Ramblings Repairing the Alpha 87a Amplifier

Alpha 87a. Alpha 87a Linear Amplifier eBay Whenever bandchange is required, in less than one second the control system automatically by-passes exciter power to the antenna, changes bands and retunes, and. Also visible on the left side of the photo is the massive collection of blue high voltage capacitors, the low voltage power supply (vertical PC board to the right of the capacitor bank), and some of the control circuitry (located just behind the front.

The Alpha 87A is capable of 1.5kW continuous RF output on all commonly used modes and on any authorized amateur frequency from 1.8 to 29.7 MHz Safety: Installation and Operation The Alpha 87A is designed to meet international safety standards and FCC regulations.

Alpha 87A HF Amplifier Test YouTube

Whenever bandchange is required, in less than one second the control system automatically by-passes exciter power to the antenna, changes bands and retunes, and. The Alpha 87A is capable of 1.5kW continuous RF output on all commonly used modes and on any authorized amateur frequency from 1.8 to 29.7 MHz Whenever bandchange is required, in less than one second the control system automatically by-passes exciter power to the antenna, changes bands and retunes, and.

Testing Amplifier ALPHA 87A at ARRL DX CW 2010 LU3CT, 73 Team LS1D. The Alpha 87A is much more complex than a typical manual tune amplifier Capable of full CW break-in (QSK) and all digital modes when used with any appropriate transceiver..

Alpha 87A Amplifier for sale de W5ENG Power Output Demonstration. Also visible on the left side of the photo is the massive collection of blue high voltage capacitors, the low voltage power supply (vertical PC board to the right of the capacitor bank), and some of the control circuitry (located just behind the front. Still, there is a common problem with the 87A that most folks can address.