The is the second of a 2 part series detailing assembly and installation of the Harbach PM-200 replacement board for the Heathkit SB-200. Part 1 can be found here.

Amateur Radio and Anything Technical
The is the second article in a 2 part series detailing assembly and installation of the Harbach PM-200 HV power supply board for the Heathkit SB-200.
The is the second of a 2 part series detailing assembly and installation of the Harbach PM-200 replacement board for the Heathkit SB-200. Part 1 can be found here.
This is Part 1 of a 2 part series showing the construction and installation of the Harbach PM-200 Replacement Power Supply in the Heathkit SB-200.
Recently I purchased a used Heathkit SB-200 amplifier from the DELARA radio club and after letting is sit on a shelf for a few months, I fired it up and immediately noticed problems. With a fair amount of troubleshooting, I discovered the HV power supply board was definitely not up to snuff.
Continue reading “A New High Voltage Power Board For the Heathkit SB-200”A powerful 5W digital only transmitter from QRPLabs
My build notes for a “Digital only” QRP transceiver kit for sale by QRPLabs. It operates on 80M, 40M, 30M and 20M, and comes with a built in USB Soundcard.