Small Wonder Labs
SW+ Series
Transceivers
The 'SW+' series is Small Wonder Labs' current offering
in the CW monoband kit market. This CW transceiver board kit is an updated
version of the classic '40-40' transceiver first fielded by the New England QRP
club and published in the November '94
issue of QST. The current generation of this design- the SW+- is an improved
version of the original. A ‘tried-and-true’ design with several thousand units
fielded to date, it features good VFO stability and low receive current draw
(22 mA). Best of all, the price is right!
Here's the overview of this family's design features:
- Single-board
transceiver, 2.8 x 4.0" (7 x 10.1 cm)
- Commercial-quality
board, masked and silkscreened. Double-sided/plated-through holes.
- True VFO: 35-40
kHz coverage
- Superheterodyne
design, with crystal IF filtering
- Built-in
Sidetone
- Quiet
solid-state T-R switching (QSK)
- Output Power
Adjustable- 2.5W max.
Enclosure/Controls Kit
The enclosure kit for the SW+ series has now
been discontinued.
A controls/connectors
kit for the SW+ is still available (see ‘pricing/ordering’). This kit consists
of the following:
(2) 3.5 mm stereo
jacks
2.1/5.5 mm power plug
2.1/5.5 mm power jack
2’ power wire
BNC jack (bulkhead
mount)
100K tuning pot
w/knob
5K gain pot w/knob
hookup wire
instructions
Dave Benson, K1SWL
Last updated 6 May 2010