The Hardrock 50 Amplifier Kit. Posted on December 20, 2021 by KC8JC.. Hardrock-50 with front and back attached to the heatsink and the ATU mounted in the case. To the right side is the Bluetooth interface. The assembly of the IC-705 Bluetooth interface was dead simple. I think the only soldering was an Arduino and a Bluetooth unit.. Review Summary For : Hardrock-50 HF+6M Solid State Amplifier Kit; Reviews: 75 MSRP: 260.00; Description: Based on Jim Veatch's winning ARRL Home Brew Challenge II amplifier design, it's been improved and functionality has been expanded to include a new aluminum enclosure with built in heat sink, an LCD display, pre-soldered SMT components, computer control options, software upgradeable, easier.
Welcome to the Hardrock-50 power amplifier site! Announcing the 10th Anniversary Hardrock-50. Same amp inside a new anodized case the case has 2 additional fins for more cooling. The Hardrock-50 is a complete 5W in, 50W out power amplifier kit. The HR50 is FCC Type Approved for commercial sale and can be purchased at HobbyPCB.com. The HR50 uses.. HardRock 50 amp with the ATU installed also includes the KX2/KX3 Hardrock50 Interface with cables. Amp works seamlessly with the KX3/KX2. Works with QRP rigs like the HW7&8, and Tentec Argonaut. Also works with FT 817/818, ELAD FDM Duo and SDRs like the Flex 1500, Genesis, Softrocks and anything that runs PowerSDR, HDSDR and the OmniRig interface.