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Classified: Hardrock-50 HF Power Amp 5w in 50 out Sold

Date Posted By Category User IP Address
2022-10-23Login requiredHF AmplifiersLogin required
SOLD!Silent key K2TML my dad, i was a ham
license expired.I have 30 years in
electronics. local pickup 07834 or buyer
pays ship, paypal or zelly. $250 in good working condition.
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 pre-drilled and tapped heat sink, an LCD display, pre-soldered SMT components, computer control options, software upgradeable, easier to use connectors, and MORE. All software is open source and the unit hackable. The HARDROCK-50 is FCC Type accepted under device ID RHAHR50

Kit includes 3 PCBs with all surface mount components professionally installed using a reflow process. Builder only needs to install through hole components; toroidal inductors, relays, transistors, connectors, etc. Also includes professionally machined case with integral heat-sink, all chassis mount components, interconnects and instruction/assembly manual. Supports auto band select (depending on transceiver) via accessory port.

Specifications
Bands: 160, 80, 40, 30, 20, 17, 15, 12, 10, 6 meter Ham Bands

Input power: 5 Watts

Output power: 40-50W on 160-10M, 30-35W on 6M

DC power: 13.8 VDC (nominal), 10 Amps (max)

Keying modes: COR, external PTT (positive or negative) and Standby

Metering: Forward and reflected power, Temperature, DC Voltage

Size: 4.25” W by 3.5” H by 7.5” D (not including switches and connectors)

Connections: RF In/Out – UHF (SO239); DC Power – Anderson Powerpoles; External PTT – RCA jack; USB serial control; DB9 Accessory Jack

Auto Band Select Support: Electraft KX3, Various SDRs via PowerSDR over USB, Kenwood CAT compatible devices over RS-232 TTL