Beta firmware supports CW and Digi (all functionality of both QCX-mini and QDX).

The "QMX+" (QRP Labs Mulitmode Xcvr): a feature-packed, high performance, 11-band (160-6m) 5W multi-mode transceiver kit, including embedded SDR receiver, 24-bit 48 ksps USB sound card, RTC, CAT control, synthesized VFO with TCXO reference. QMX+ transmits a SINGLE SIGNAL, it is not an SSB modulator with associated unwanted sideband and residual carrier, or intermodulation due to amplifier non-linearity. QMX+ outputs a pure single signal. QMX is currently only suitable for single tone FSK modes, which covers the majority of digital modes in use today (if it later supports SSB, multi-tone and phase shift digi modes will be possible). This includes everything in WSJT-X, JS8Call, some fldigi modes e.g. RTTY, Olivia and more. QMX+ is also suitable for on/off keyed modes such as CW because it has click-reducing RF envelope shaping; it is not suitable (until and if SSB is implemented) for phase shift keyed modes such as PSK31 or modes involving multiple concurrent tones such as WinLink.

Assembled kit: The kit will be by default, assembled for operation from a 12V supply. If you prefer it to be built for 9V supply operation, please write a note in the customer notes/comments field at the checkout. NOTE: Assembled kits are built to order, the waiting list is published here https://www.qrp-labs.com/qcxmini/assembled.html - we ship around 25 per week so, if you are ordering an Assembled radio, please accept some waiting time based on this; if you need it urgently then please contact us about it.

The Optional enclosure is black anodized extruded aluminium, very sturdy and elegant. The enclosure size is 105 x 55 x 146mm without protrusions. The front and rear panels are drilled and cut to match the QMX+ PCB with laser-etched lettering. The enclosure includes four self-adhesive feet.

Optional GPS module: the QLG3 GPS receiver module is installed inside the QMX+ enclosure and comes with included active patch antenna, 2m coax and SMA connectors to plug the antenna into the QMX+ rear panel. The GPS may be connected permanently as it does not use the paddle/mic port (unlike QMX and QCX-series).

Optional Dev kit: a matrix board that includes 4x 11mm spacers and 8x 6mm screws, and bolts above the main QMX+ board, facilitating your experiments and modifications.

NOTE: due to shipping restrictions we are not able to ship batteries, therefore the CR2032 coin cell battery is not included; however this is worldwide probably the most commonly available and cheapest coin cell.

  • Band coverage: 160, 80, 60, 40, 30, 20, 17, 15, 12, 11, 10 and 6m
  • CW and FSK Digi modes
  • All features of QCX-mini (VFO A/B/Split, RIT, Message and frequency memories, beacon, keyer)
  • 3-5W output at 12V supply (can be built for 3-5W at 9V supply)
  • SWR bridge built in
  • Single signal transmission (zero unwanted sideband, zero residual carrier, zero intermodulation distortion)
  • Solid-state band switching and transmit/receive switching under CAT control
  • High performance embedded SDR SSB receiver with 60-70dB of unwanted sideband cancellation
  • Built-in 24-bit 48ksps USB sound card
  • Built-in USB Virtual COM Serial port for CAT control
  • CR2032 battery backed Real Time Clock (battery not included)
  • Si5351A Synthesized VFO with 25MHz TCXO as standard
  • Easy to build single-board design, Professional quality 6-layer, through-hole plated, silk-screen printed PCBs
  • All SMD components factory assembled
  • Connectors: 2.1mm power barrel connector, USB-C (for audio and CAT control), BNC RF input/output
  • Built-in test signal generator and testing tools
  • Switched mode regulators
  • GPS interface for frequency calibration, real time clock and location (internal WSPR beacon)
  • IQ output mode for use with SDR software
  • Receive current 80mA, Transmit current 1.0-1.1A for 5W output with 9V supply (around 0.7A for 5W with 12V supply).
  • Optional internal GPS (QLG3)
  • Optional dev kit PCB
  • Optional aluminium extruded cut/drilled/laser-etched black anodized enclosure

Full details, see main QRP Labs QMX+ page

SMPS PCBs are also available separately, CLICK HERE.

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QMX+ 160-6m, 5W multi-mode transceiver

  • Product Code: QMX+
  • Availability: 116
  • $125.00


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