Davac5: Difference between revisions
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==Circuit diagram== | ==Circuit diagram== | ||
[[Image:Davac5.0-schema.png|none|frame|Circuit diagram of Davac 5.0]] | [[Image:Davac5.0-schema.png|none|frame|Circuit diagram of Davac 5.0]] | ||
==Connecting to the radio== | |||
* '''MOD''' - modulation output to the microphone input of radio | |||
* '''PTT''' - Push to talk output to switch Radio to the transmit (active low) | |||
* '''GND''' - One ground (ground plane on the bottom layer) | |||
Revision as of 21:19, 14 October 2023
Davac 5 is new design of voice/SSB keyer for Tucnak. Although version 5 may appear to be a successor to version 4, is not true. It brings some advantages but also lacks some features.
To choose the version that best suits your requirements, please look at the table:
| Davac 5 | Davac 4 | |
|---|---|---|
| Size | small | bigger |
| Drivers required | No | Yes |
| Isolated | No, use the USB isolator | Yes |
| Band output | No | Yes |
| USB | Micro-B | A |
| Soundcard | Is the soundcard itself | Uses PC soundcard |
| Audio cables | Shorter | Longer |
| Modulation relay | Solid SPST | Mechanical SPDT |
Photos
Features
- Simple assembly
- All parts are SMD
- Designed for SMD reflow
- 3.5 jacks
- 3D printed box
- SMD LEDs + light guides on the top side
- power supply from USB
Circuit diagram
Connecting to the radio
- MOD - modulation output to the microphone input of radio
- PTT - Push to talk output to switch Radio to the transmit (active low)
- GND - One ground (ground plane on the bottom layer)