[VE3EBY] Cooling the Yaesu FT-817 for digital modes
Post : Cooling the Yaesu FT-817 for digital modes URL : https://ve3eby.wordpress.com/2016/11...digital-modes/ Posted : November 23, 2016 at 8:55 am Author : ve3eby Tags : amateur radio, FT817, Ham radio, heat sink, JT65, PSK31 Categories : Digital, QRP From Kevin, KB9RLW A simple trick to keeping the FT-817 cool while running 100% duty cycle modes like JT65, PSK31 etc. You can get away with 5 Watts safely. The finals should be ok with the duration. They are 2SK2975 MOSFETs. From the spec sheet, they are rated at 10W dissipation when mounted to a heat sink. Obviously you still need to be careful. Back to back digital QSO's in a contest could still heat it up over time. [...] |
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