5W CW Transceiver kit assembly instructions

Easy to build, single-board design, 10 x 8cm, all are controls board-mounted
Professional quality double-sided, through-hole plated, silk-screen printed PCB
Choice of single band, 80, 40, 30, 20 or 17m
Approximately 3-5W CW output (depending on supply voltage)
7-15V supply voltage
Class E power amplifier, transistors run cool… even with no heatsinks
7-element Low Pass Filter to ensure regulatory compliance
CW envelope shaping to remove key clicks
High performance receiver with at least 50dB of unwanted sideband cancellation
200Hz CW filter with no ringing
Si5351A Synthesized VFO with rotary encoder tuning
16 x 2 blue backlight LCD screen
Iambic keyer or straight key option included in the firmware
Simple Digital Signal Processing for a CW decoder, displayed real-time on-screen
On-screen S-meter
Full or semi QSK operation using fast solid-state transmit/receive switching
Frequency presets, VFO A/B Split operation, RIT, configurable CW Offset
Configurable sidetone frequency and volume
Connectors: Power, 3.5mm keyer jack, 3.5mm stereo earphone jack, BNC RF output
Onboard microswitch can be used as a simple straight Morse key
Built-in test signal generator and alignment tools to complete simple set-up adjustments
Built-in test equipment: voltmeter, RF power meter, frequency counter, signal generator
Beacon mode, supporting automatic CW or WSPR operation
GPS interface for reference frequency calibration and time-keeping (for WSPR beacon)

DRAFT assembly and operating instructions

DRAFT assembly instructions CLICK HERE (7.5 MBytes PDF file). This document is NOT final! It is targeted initially only for the 17m YOTA buildathon constructors. The final document will include specification of components for other bands (where the component value is band-dependent in the kit). There are a few changes to the firmware that affect the operating instructions, including addition of CW keyer “weight” configuration. There will also be measurements of Rx and Tx current, and a chart of power output against supply voltage (by band).

Price:USD 50

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