The PSK-20 Transceiver
Click below to download a sample copy of the PSK-20 manual. File size is 374 kB and is in .pdf (Acrobat) format. Caution: this version is not current
Click here for troubleshooting support:
design is a derivative of the SSB transceiver appearing in the
April 1997 issue of QST. It's been streamlined for ease of
construction and alignment, and many of the higher
installation-skill components have been designed out. Intended as
an entry-level platform for PSK31 use, it covers the
14.0695-14.073 segment of 20M where most of the PSK31 activity is
The rig is crystal-controlled and was designed to work with the popular (and free!) DigiPan software. Output power is 3W PEP. The crystal control provides excellent stability and its simplicity keeps the cost low. Performance characteristics for all versions are similar.
Click here for free DigiPan software :
Kit assembly is straightforward- there are only four toroids to wind! The number of adjustments is kept to the minimum consistent with good performance, and no special test equipment is needed to perform the alignment. Theres no harness wiring- all interface connectors mount on the rear of the circuit board. The board kit includes a 26-page manual with color figures. Step-by-step assembly instructions are included.
The interface cables to your computer are off-the-shelf items, available from Radio Shack and other suppliers - theres no soldering of adapter cables required and no extra interface units! Once the transceiver kit is assembled, it's 'plug-and-play'- any operating adjustments are made via your computer.
* if running Windows. Linux and Mac applications also exist.
Click below for a high-resolution (305 kB) image of the board:
The board kit price is $100 and is
The board assembly slides into a Lansing Instruments Micropak series extrusion enclosure and affixes to the rear panel via the serial-port connector jackscrew hardware.
This enclosure features a handsome
black-anodized finish. End panels are included- the image below
shows the custom-punched and silkscreened rear panel. Pricing for
the enclosure, panels and related hardware is $30.
Dave Benson, K1SWL
Small Wonder Labs