QRP to 35W HF Packer Amp
Product Description
A Home Construction project for the Radio Amateur. All quality parts supplied with a comprehensive construction manual on-line. This project includes a deluxe case and fabricated internal cables. Support web site and Yahoo Group.
This home construction project includes all circuit boards and parts. It is supplied with a finished case. The finished case is fabricated black powder coated and silk screened. The heat sink is drilled and tapped. The internal cables are fabricated with the proper crimping tools. Assembly consists of a class AB1 linear amplifier circuit board with two IRF510 MOSFETs attached to a heat sink, a RF activated Power Supply module plugged in on top of the amplifier module boosting 12 to 24VDC at 5A maximum. The module is very low standby current of about 5mA and about 6A average on voice peaks. The amplifier will provide full output on as little as 8VDC input making it very tolerant to battery operation. The finished case and cables adds value to your project.
The amp is very popular with the FT-817 transceiver and is set up to deliver full output power with 2.5W RF input. The amp is RF switched but may be easily controlled by PTT from the transceiver. This amplifier is fully filtered by the third module, a manually selected low-pass filter covering 160 to 10M (including 60 meters). You are required to wind the 13 toroids and assemble the compact filter module. All low pass filter module caps are 5% 500V dip mica style capacitors.
The circuit boards are a 3rd generation all double sided professional quality circuit boards with silk screen and solder mask. The parts are all first rate quality. You must be a licensed radio amateur to purchase this home construction project. Over 800 of these amps have been supplied over the past 5 years. It takes about 10-12 hours to build this project. This project is available world wide. Read the reviews at eham.net for more information. This is a great back packing amp and works CW, SSB or PSK.
This home construction project includes all circuit boards and parts. It is supplied with a finished case. The finished case is fabricated black powder coated and silk screened. The heat sink is drilled and tapped. The internal cables are fabricated with the proper crimping tools. Assembly consists of a class AB1 linear amplifier circuit board with two IRF510 MOSFETs attached to a heat sink, a RF activated Power Supply module plugged in on top of the amplifier module boosting 12 to 24VDC at 5A maximum. The module is very low standby current of about 5mA and about 6A average on voice peaks. The amplifier will provide full output on as little as 8VDC input making it very tolerant to battery operation. The finished case and cables adds value to your project.
The amp is very popular with the FT-817 transceiver and is set up to deliver full output power with 2.5W RF input. The amp is RF switched but may be easily controlled by PTT from the transceiver. This amplifier is fully filtered by the third module, a manually selected low-pass filter covering 160 to 10M (including 60 meters). You are required to wind the 13 toroids and assemble the compact filter module. All low pass filter module caps are 5% 500V dip mica style capacitors.
The circuit boards are a 3rd generation all double sided professional quality circuit boards with silk screen and solder mask. The parts are all first rate quality. You must be a licensed radio amateur to purchase this home construction project. Over 800 of these amps have been supplied over the past 5 years. It takes about 10-12 hours to build this project. This project is available world wide. Read the reviews at eham.net for more information. This is a great back packing amp and works CW, SSB or PSK.
