B07ZMCHGJ2 HYS Ham HF Amplify Power 3-30MHz HF Transceiver with Fan for Handheld 3-30Mhz Two Way Radio

The most effective working frequency is 20-30 MHz, and with the situations of working under 20 MHz, the v.s.w.r will be higher and also the heat dissipation will be higher.
About the working general output for AM & FM mode is around 100W and the most effective output is around 200 W with input 5 W and around 200-250 when the input is 10W.

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