I control HARDROCK-50 in KX3.

HARDROCK-50 ATU Prototype demo from Dayton HamventionПодробнее

KX3/HARDROCK-50 Auto Band SwitchingПодробнее

Hardrock 50 AmplifierПодробнее

HobbyPCB Hardrock-50 to Elecraft K2 InterfaceПодробнее

QRP Hack - Using an Amp to get more UMPHH in my QRP - The Hardrock-50 AmplifierПодробнее

HobbyPCB - Hardrock-50 HF AmpПодробнее

Testing KX3 on RM50 powerПодробнее

kx3 with mx-p50a ampПодробнее

KX3 Amplifier interface testПодробнее

Using the FT-857 as an amplifier for the KX3Подробнее

HARDROCK-50 HF POWER AMP REVIEW & ON AIR TESTПодробнее

Weak signal boosting on Elecraft KX3Подробнее

Step By Step Guide To Building The Hardrock 50 HF AmplifierПодробнее

Hardrock 50 and Elecraft KX2Подробнее

HARDROCK-50 First OutingПодробнее