General Overview:
Overview: Pin-Out of external connections
button shortcuts:
- When external Speaker / Headphone is connected, on-board speaker will be disconnected / disabled.
- When external Microphone / Paddle / Key is connected, on-board Microphone will be disconnected / disabled.
- USB and Power Supply can be connected at the same time. Main Power Supply has always priority and will be prefered over USB 5V by the rig, when connected.
CAT usage
Here is a guideline how (tr)uSDX CAT can be used on other operating systems:
- Linux: https://forum.dl2man.de/viewtopic.php?p=4108#p4108
- Mac: https://gist.github.com/relistan/bd9c4b8bab55b81c0374f30bf565bbe0
Firmware 2.00t and above, requires a baudrate setting of 115200 (instead of 38400), the supported CAT protocol is Kenwood TS-480.
Digital modes without Audio Cables
It is also possible to use digital modes over USB cable ONLY (no audio cables and sound cards are needed!), the audio stream is transported over the CAT serial interface.
There are various applications that supports the (tr)uSDX CAT streaming protocol:
- Digimode usage (WSJT-X, JS8CALL, WinLink) on your Windows/Linux PC or Raspberry PI is facilitated with a special (tr)uSDX CAT streaming Driver. Below a video demonstration:
- FT8CN is a famous FT8 app for Android and supports (tr)uSDX CAT streaming since version 0.91, all is needed is a USB-OTG cable from the phone to the (tr)uSDX. (here an old beta: FT8CN_0.91_Beta10_20230910)
- PocketRXTX and jAReC, from Dan YO3GGX, is an extensive transceiver dashboard on your PC or mobile phone that implements (tr)uSDX CAT streaming support.
More details about the supported CAT commands and extensions (such as CAT streaming) can be found here: 5 (tr)uSDX Details.
Frequency Calibration
Spectrum Display
Firmware 2.00t and above do have a spectrum display, when holding the left button and tuning the frequency dial. Here a video about the feature:
Menu Functions
The following Information is NOT 100% accurate and needs to be updated:
Ⓛeft Ⓔncoder Ⓡight button, ⥀=turn, –=hold button (longer), ◯◯=fast double click, ◯-◯-=slow double click, ◯-⥀=hold button and turn
| Action | (Menu) Function | Values |
|---|---|---|
| onⒺ- | Factory Reset | |
| ⥀ | VFO | 20kHz..99MHz |
| Ⓛ | Enter menu | |
| Ⓛ-⥀ | Quick Enter menu | |
| Ⓡ | Menu Exit | |
| Ⓔ-⥀ | 1.1 Volume | 1-15 in 6dB steps, 0 is Power-Off |
| offⓁ | Power-On | |
| Ⓡ | 1.2 Mode | LSB, USB, CW, AM, FM |
| ⓇⓇ | 1.3 Filter BW | Full, 3000, 2400, 1800, 500, 200, 100, 50 Hz |
| ⒺⒺ | 1.4 Band | 80,60,40,30,20,17,15,12,10m |
| Ⓔ | 1.5 Tuning Steps ↧ | 10M, 1M, 0.5M, 100k, 10k, 1k, 0.5k, 100, 10, 1 |
| Ⓔ- | 1.5 Tuning Steps ↥ | |
| Ⓡ-Ⓡ- | 1.6 VFO Mode | VFO-A, B, Split |
| Ⓡ- | 1.7 RIT | ON, OFF |
| ritⓇ | RIT Exit | |
| 1.8 AGC | ON, OFF | |
| 1.9 NR | 0-8 exponential averaging step | |
| 1.10 ATT | 0, -13, -20, -33, -40, -53, -60, -73 dB | |
| 1.11 ATT2 | 0-16 in 6dB steps | |
| 1.12 S-meter | OFF, dBm, S, S-bar | |
| 2.1 CW Decoder | ON, OFF | |
| 2.4 Semi QSK | ON, OFF | |
| 2.5 Keyer speed | 10-40 Paris-WPM | |
| 2.6 Keyer mode | Iambic-A, B, Straight | |
| 2.7 Keyer swap | ON, OFF | |
| 2.8 Practice | ON, OFF | |
| 3.1 VOX | ON, OFF | |
| 3.2 Noise Gate | 0-255 in 6dB steps | |
| 3.3 TX Drive | 0-8 in 6dB steps, 8=constant amplitude | |
| 3.4 TX Delay | 0-255 ms | |
| 4.1 CQ Interval | 0-60 s | |
| Ⓛ | 4.2 CQ Message | Transmit CQ text |
| 8.1 PA Bias min | (0-255) representing 0% RF output | |
| 8.2 PA Bias max | (0-255) representing 100% RF output | |
| 8.3 Ref freq | si5351 crystal frequency in Hz | |
| 8.4 IQ Phase | 0..180 degrees | |
| 10.1 Backlight | ON, OFF |
| onⒺ- | Factory Reset | ⓇⓇ | Audio Filter |
| ⥀ | VFO | ⒺⒺ | Band |
| Ⓛ | Enter menu | Ⓔ | Tuning Steps ↧ |
| Ⓛ-⥀ | Quick Enter menu | Ⓔ- | Tuning Steps ↥ |
| Ⓡ | Menu Exit | Ⓡ-Ⓡ- | VFO-A, B, Split |
| Ⓔ-⥀ | Volume/Power-Off | Ⓡ- | RIT |
| offⓁ | Power-On | ritⓇ | RIT Exit |
| Ⓡ | LSB, USB, CW, AM, FM | 4.2Ⓛ | Transmit CQ message |
| onⒺ- | Factory Reset | ⓇⓇ | Audio Filter | ⥀ | VFO | Ⓡ-Ⓡ- | VFO-A, B, Split |
| Ⓛ | Enter menu | ⒺⒺ | Band | Ⓔ-⥀ | Volume/Power-Off | Ⓡ- | RIT |
| Ⓛ-⥀ | Quick Enter menu | Ⓔ | Tuning Steps ↧ | offⓁ | Power-On | ritⓇ | RIT Exit |
| Ⓡ | Menu Exit | Ⓔ- | Tuning Steps ↥ | Ⓡ | LSB, USB, CW, AM, FM | 4.2Ⓛ | Transmit CQ message |
| 1.1 | Volume | 1.9 | NR | 2.7 | Keyer swap | 8.1 | PA Bias min ( 0% RF) |
| 1.2 | Mode | 1.10 | ATT | 2.8 | Practice | 8.2 | PA Bias max (100% RF) |
| 1.3 | Filter BW | 1.11 | ATT2 | 3.1 | VOX | 8.3 | Ref freq |
| 1.4 | Band | 1.12 | S-meter | 3.2 | Noise Gate | 8.4 | IQ Phase |
| 1.5 | Tuning Steps | 2.1 | CW Decoder | 3.3 | TX Drive | 10.1 | Backlight |
| 1.6 | VFO Mode | 2.4 | Semi QSK | 3.4 | TX Delay | ||
| 1.7 | RIT | 2.5 | Keyer speed | 4.1 | CQ Interval | ||
| 1.8 | AGC | 2.6 | Keyer mode | 4.2 | CQ Message |