QMX 5-band 5W Digi transceiver

Description
Reviews (21)

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, five-band (80, 60, 40, 30, 20m) 5W multi-mode transceiver kit. , including embedded SDR receiver, 24-bit 48 ksps USB sound card, 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 92 x 63 x 25mm 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.

Band versions: 80, 60, 40, 30 and 20m, OR 60, 40, 30, 20, 17 and 15m, OR 20, 17, 15, 12, 11 and 10m
CW and FSK Digi modes
All features of QCX-mini (VFO A/B/Split, RIT, Message and frequency memories, beacon, keyer)
4-5W output at 12V supply (can be built for 4-5W 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
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 aluminium extruded cut/drilled/laser-etched black anodized enclosure