Small Wonder Labs
PSK-20 Transceiver Kit 03/09/10
2000
22
Hooking Up:
The figure below shows the interconnect between
the PSK-20 board and the outside world (more on
alignment later)
Before the "Smoke Test":
Inspect your work to ensure there are no solder
bridges or unsoldered joints. Check to see that the ICs
are mounted in their proper orientations.
PSK-20 Mechanical Details
The board itself may be mounted in an enclosure at
the board's four corners, using #4 machine screw
hardware. #4 spacers should be used to separate the
PC board from the enclosure by 3/16" or more. ( #4
hex nuts are an acceptable substitute for spacers.)
Enclosures may be found in a variety of styles.
Radio Shack offers several types of metallic
enclosures. I'd especially recommend Hosfelt
Electronics, Inc., who carry enclosures offered by a
number of companies. There's no minimum order,
and they can be reached at [800] 524-6464 for a
catalog. Ten-Tec also offers a complete line of
enclosures, and they support small orders as well! Call
[800] 231-8842 for a free brochure.
The enclosure option for this transceiver is a
Lansing 'Micropak' CT1-series enclosure with a
companion custom-punched end panel. The board
size is tailored to fit the enclosure side-rail slots
and the custom panel bolts to the DB-9 (serial
port) connect for rigidity. Information on this
enclosure may be found at:
http://smallwonderlabs.com /psk31/
COMPUTER
MICR. IN
LINE or SPKR
OUT
J2
'AUX'
'LINE OUT'
J3
SERIAL PORT
J1
'AF OUT'
'SERIAL PORT'
J4
'PWR'
'ANT.'
COAX, 50 OHM
(TO TUNER/SWR BRIDGE
OR ANTENNA)
DC POWER
12-15V @1A min
J5 center pin positive
Soundcard
Interface
SPEAKERS
(part of computer)
PSK-20 BOARD
1
1
2
CABLE DESCRIPTION:
1
3.5mm stereo (3-cond) to 3.5mm stereo (3-cond)
2
DB-9 (Serial port) Female to DB-9 female Cable
Radio Shack # 26-152
or Jameco (800-831-4242) #132345
Radio Shack # 42-2387
(2 required)
J5
J6
