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2.1. TX LF / MF DL3ARM "Linear"
The signal generation is performed by the TS570. This offers a variety of modulation standards as well as a variable output power.
Following the ideas of G3XBM, the signal is down-converted to the LF or MF bands respectively and amplified to about 5 W by a linear PA.
The push-pull class-B power amplifier with 2x IRFP260N ( max. 200V / max. 50A). Operated at a drain supply voltage of 70 V.
