Unbuilt Discontinued QRPGuys Digital Transceiver Kit II w Optional Si5351A VFO

Description

Unbuilt Discontinued QRPGuys Digital Transceiver Kit II. The kit comes with the matching Si5351A VFO. Because of the shortage of the Si5351 chips, these VFO's (and any kit that requires the chip) are very hard to find. Condition is "New". Instructions and resources can be found on the QRPGuys website. This kit has been replaced by the Digital Transceiver III.
Shipping is via USPS First class mail for a flat price of .50 within the United States.
Description of kit from QRP Guys
The new QRPGuys DSB Digital Transceiver
II
is a low cost, multiband, DSB transceiver kit, with three easy plug-in modules for 40/30/20m, (additional module pcb’s available). Changes that Steve Weber (KD1JV) have included are, a
high pass filter
to help with BCB interference in troubled environments, replaced the relay with
solid state switching
, and designed a
multi-band 160m-17m VFO
as an easy plug-in option. The transceiver output remains the same at an approximate 2.5 watts on 40m, over 1.5 watts on 30m, and over 1 watt on 20m. The receiver sensitivity was measured at .4uV (-115dBm). The board is the same size, and all the components are included for the transceiver (3.0″ x 3.12″) and three band modules, for 40/30/20m.
You can see the optional new Si5351A VFO here
,
designed for our original transceiver and the new
“
II
“
transceiver
to allow
different modes and bands
from 160m – 17m.
No more sourcing crystals!
The transceiver runs the popular free WSJT-X software (Windows, Linux, or macOS) that requires an accurate time synchronization program, such as Dimension 4, or many of the other free ones available. Users will need two generic 3.5mm stereo jumpers to your computer or tablet microphone/speaker jacks on the sound card.
The T/R relay is replaced by a transistor switch with the
VOX circuit sensing the signal from the software on the pc or tablet speaker jack. The optional VFO plugs into and mounts directly on the pcb. The connections to the transceiver are BNC for the antenna, 3.5mm stereo jumpers to the computer audio jacks, and 12-14 VDC for the pcb mounted 2.1mm pin coaxial power jack. Power consumption is about RX-15mA / TX-350mA. The total weight w/three band modules is 3oz. (85gm). The normal tools required are a soldering iron with a small tip, rosin core solder, and small side cutters. The transceiver can be built in an evening. On a difficulty scale of 1 to 5, 5 being the most difficult, this is rated at 3 depending on your experience.