begin ideas 70cm qrp cw trx
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# scratchpad: ideas, notes etc
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## portable 70cm cw
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low-power cw transceiver
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- 432000..432400 kHz
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- headphone jack, loudspeaker optional (low sound quality ok)
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- direct keying, elbug circuit optional (mechanical switch)
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- working on 5..12 V, optimized for 5 V (USB)
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- output pwr: min 0.1 W, optional 0.5 and 2 W
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- LCD display with mechanical backlight switch
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- mechanical off/volume knob
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- mechanical or electronic (eg 100 Hz steps) BFO
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- power save mode 100/30/10/3% with variable squelch (trimmer?)
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