Variable Attenuator: 0-31dB. - Output Power (RU4PN/WF-100D Version): 100W (HF) and 50W+ (VHF) (RS-998). - Output Power (QRP++DB5AT Version): 20W (HF) and 7W (VHF) (RS-988). - 1 x Transceiver. - Built-in antenna tuner (Only for RS-998).
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