Brand New, complete with DSP installed, lower current draw for cooler operation, external reset switch and an overload LED on the front panel!

Call your dealer to order now ! (We do not sell products on our master price list directly - Support your dealer!)

Timewave's Powerful DSP Technology
Improves the PK-232!

Timewave's customers swear by their DSP filters and PK-232 owners love the flexibility and reliability of the most popular data controller ever built. The PK-232/DSP rolls it all into one! The PK-232/DSP daughter board brings a new level of performance to the legendary PK-232 with sharp, accurate filters for all the data modes. Noise and QRM bounce off the new filters for cleaner copy with fewer errors than the old analog filters. Weak signals magically appear from the noise.

More Filters, Better Filters, Automatic selection
The PK-232 was designed in 1985 before the advent of affordable DSP technology. The filters in today's analog TNC's were state-of-the art in 1985, but they pale beside the performance of DSP filters. (We know a bit about RTTY/Data filters - old and new. Timewave built a DSP Terminal Unit for the U.S. Navy in 1988, before most amateur radio companies could even spell DSP! Unfortunately, $3000 for a TU was a little high for the average ham, so we put DSP on hold for the ham market until 1993).

The PK-232/DSP brickwall filters have tighter bandwidth and steeper skirts for improved noise and QRM rejection. A new version of the PK-232 firmware (Ver. 7.2) allows a wider selection of filters than the original PK-232, so the filter can match the mode. The correct DSP filter is automatically selected when you choose a new mode. In RTTY, Timewave's proven Twin Peak filters pluck the mark and space tones from the noise and QRM for great copy. In PACTOR, the filter bandwidth automaticallly changes when the baud rate shifts in response to the error rate of the link. In Morse (CW), the operator can preset either 100 Hz or 200 Hz bandwidth.

The PK-232/DSP is completely compatible with all existing software terminal programs for the PK-232.

Easy Upgrade Installation

On-the-air performance of an upgraded PK-232/PK-232/MBX is identical to the new PK-232/ DSP! Upgrade installation in the PK-232 and PK-232MBX is easy. If you have installed a PK-232MBX daughterboard, you already know how to install the PK-232/DSP daughterboard. It's as simple as plugging in the daughterboard and 2 new PK-232 EPROMS, soldering three connections, and clipping a couple of component leads. If you have a early PK-232 without the MBX (mailbox) daughterboard, you get both the MBX and DSP daughterboards with the new ver. 7.2 EPROMs to bring your PK-232 up to date. There are some variations of the procedure, depending upon which version of the PK-232 you have. The upgrade comes with complete instructions, in addition to Timewave's on-line and telephone support. Dealer and factory installation is also available.

All Proven Modes
The PK-232/DSP supports all the PK-232 modes - PACTOR, VHF/HF Packet, AMTOR/SITOR, Baudot, ASCII, Morse, HF Weather FAX, TDM, and NAVTEX. The PK232/DSP upgrade includes the MBX upgrade for maildrop operation for Packet, AMTOR, and PACTOR.

Specifications - DSP
A/D - D/A 16 bit
 Digital Signal Processor Analog Devices ADSP2104
 Size (DSP daughterboard)  2.5" x 4.5"


  • Digital Signal Processor
  • 16 Bit A/D-D/A
  • 18 DSP Filters
  • Twin Peak RTTY Filters
  • Adaptive PACTOR filters
  • 100 Hz CW Filter
  • Automatic Operation
  • All standard modes
  • Low tone set for Europe


Packet 300 bps HF
Packet 1200 bps VHF


US Dealers
Canadian Dealers
International Distributors

Timewave carries a complete line of accessories for the Data controller product lines. The accessories include power supplies, cables, connectors, manuals and upgrades. Please call or email us with your requirements.





USB Drivers for PK-232/USB


PK-232/DSP/BAL Datasheet

PK-232/USB USB Information


To Contact Timewave
US Dealers 651-489-5080
Timewave Technology Inc.
Canadian Dealers
360 Larpenteur Ave. W. STE 100
International Distributors
St. Paul, MN 55113 USA
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