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CWTRX: add memory handling and additional settings

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Yargo Bonetti 2018-07-07 23:57:50 +02:00
parent de2cf9e7c1
commit 36e7fe6561
1 changed files with 20 additions and 14 deletions
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scratch.md
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@ -1,50 +1,51 @@
# scratchpad: ideas, notes etc
## CWTRX
## Pjt CWTRX
low-power portable (70cm) CW transceiver, for short range contacts
### general features
- supply 5..12 V, optimized for 5 V (USB)
- power save mode with variable squelch (trimmer? electronic?)
- 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
### 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
- TX: 0.01, 0.1 W, optional 0.5 or 2 W
- RX: direct conversion (electronic 100 Hz steps or less)
- TX: 0.05, 0.5, 5 W; 0.5 default
- RX: direct conversion (electronic 0.1 kHz steps or less)
### user interface
- mechanical off/volume knob
- 8 buttons: MENU, ESC, ENTER, +, -, A, Z, (RESET)
- output by side tone in Morse code, default speed 20 wpm
- output by side tone in Morse code, default speed 20 WpM
- LED optional (blinking with side tone)
- 2 headphone jacks, optionally one with deactivated loudspeaker (low sound quality ok)
- direct keying, elbug optional (perhaps selected by plug type)
- direct keying, elbug optional (selected by plug type?)
#### button functions outside of settings
#### button functions during normal operation (not settings menu)
button press generates side tone, higher pitch when long press detected
- MENU: settings (short) / default store (long)
- ESC: status report (short) / default recall (long)
- MENU: settings (short) / direct (DM) store (long)
- ESC: status report (short) / direct (DM) recall (long)
- ENTER: transmit (short or long)
- +, -: freq change (increasing step size when long press, indicated by increasing side tone pitch) with reporting of changed digits in case of increased step size
- A, Z: memory recall (short) / memory store (long)
- A, Z: working memory recall (short) / store (long)
- (RESET): hidden button for factory defaults (long)
status report: RX/TX freq (abbreviated inside range limits), battery level
#### settings
#### settings menu
- while idle in settings, short beep every 2 sec
##### buttons
##### button functions in settings menu
- MENU: tell current item (short) / save and exit (long)
- ESC: leave current menu (short) / abandon and exit (long)
@ -53,10 +54,15 @@ status report: RX/TX freq (abbreviated inside range limits), battery level
- A: yes/set/all/max.value
- Z: no/clear/zero/min.value
##### items
##### settings menu items
- power level
- squelch level
- receive offset (active after transmission, always zero during scanning)
- semiduplex: TX using A/Z memory, notified by chirping sidetone, reset with ESC from this item or long ESC (DM recall) during normal operation
- switch direct memory (DM) and memory A/Z/+/- (shadow memories + and - only accessible this way), new DM freq reported with side tone
- report all memory contents
- receive offset (active after transmission and memory recalls, zero during scanning): A/Z=1/0 kHz
- beacon text, enter as Morse code: A/Z=dash/dot, +/-=enter/delete character, MENU/ESC=save/abandon
- beacon and side tone speed/WpM
---