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I noticed that the 64-bit version of the sBitx application added 60 m (5.3 MHz) band. However, is the LPF filter in a standard, preassembled sBitx v3 ready for transmitting in this band?

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73, Wojtek SP5DAA

Hello Wojtek,

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The answer to your question is yes; the 80-meter filter has a corner frequency of approximately 6.5MHz and is relatively flat from 3.5 to 5.9MHz.? The real issue is the "channelization" required for the band.? The sbitx does not have channels programmed.? You can set up memory values to act as channels.? I have not done this as I do not have an antenna that would work for 60 meters.

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The data for the above comes from an LTSpice XVII simulation, not actual measurements.? I have verified that the transmission is "clean" using a TinySA Ultra in harmonic measurement mode.

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73

Evan

AC9TU