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contd ideas cwtrx

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Yargo Bonetti 2018-07-08 08:43:57 +02:00
parent 36e7fe6561
commit c212a0029e
1 changed files with 6 additions and 5 deletions
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@ -9,15 +9,16 @@ low-power portable (70cm) CW transceiver, for short range contacts
- supply 5..12 V, optimized for 5 V (USB)
- power save mode with electronic squelch
- beacon mode: call sign transmission unless squelch open, pause
- 1 direct memory DM, 2 working memories A and Z, 2 shadow memories + and -; each memory contains freq, power and squelch levels
- 1 direct memory DM, 2 working memories A and Z, 2 shadow memories + and - (each containing freq, power and squelch levels)
- callsign memory for beacon operation
- system status and memories retained during power off: 6 times (1 byte power level + 1 byte squelch level + 3 byte freq offset in Hz + 1 byte status) = 36 bytes, plus 25 bytes for call sign
### RF section
- at least 432000..432400 kHz, up to 438000 if possible
- range limits selectable, valid for manual and automatic scans
- antenna: socket / headphone cable / key cable
- TRX freq range at least 432000..432400 kHz, up to 438000 if possible; may be reduced for manual and automatic scans
- antenna: dedicated socket / headphone cable / key cable
- TX: 0.05, 0.5, 5 W; 0.5 default
- RX: direct conversion (electronic 0.1 kHz steps or less)
- RX: direct conversion with electronic 0.1 kHz steps or less
### user interface