[Elecraft] New KDSP2 Advanced DSP Filter for the K2

[Eric Swartz WA6HHQ - Elecraft]

We've just released the KDSP2 advanced DSP for the K2. Below is the KDSP2 
product description.

(We have also just released three transverters (6M, 2M and 220 MHz) that work 
with most HF rigs and an external band decoder box for controlling antenna 
switches and band pass filter boxes. Instead of putting everything in one huge 
email I'll be posting them separately to the list.)

73, Eric  WA6HHQ
http://www.elecraft.com
============

The Elecraft KDSP2 brings versatile, high-performance digital signal 
processing (DSP) technology to the K2 and K2/100 transceivers. The KDSP2 unit, 
which is fully integrated with the K2, plugs directly into the Control board. 
It's also very easy to assemble, with no surface mount components to install. 
The DSP IC and related parts are pre-installed on a small plug-in module.

The KDSP2 provides up to four user-configurable filters in each mode 
(CW/SSB/data), complementing the K2's variable-bandwidth crystal filter. CW 
filter settings include center frequency and bandwidth, with "hard" and "soft" 
filter algorithms and bandwidths as narrow as 50 Hz. SSB filters provide 
programmable low and high cutoff frequencies. Four levels of noise reduction 
are available in CW and SSB modes, while SSB mode includes an automatic notch 
filter. The KDSP2 is unique in that noise reduction and auto notch parameters 
can be modified to suit the operator.

Filter modes and features can be quickly accessed via the K2's DISPLAY button, 
while parameters adjustment is accomplished using the DSP module's own menu 
system. In addition, the unit's firmware is flash-based and field upgradeable. 
The DSP code is open-source to encourage community involvement and education.

Like our KAF2 analog audio filter module, the KDSP2 includes a real time 
clock/calendar with its own backup battery. This feature is especially useful 
during field operation, eliminating the need for a separate clock for logging 
or contest use. Current drain of the KDSP2 can be reduced to approximately 10 
mA by placing the audio filter subsystem in bypass mode.

The DSP code for the KDSP2 is open source, allowing advanced users to create 
their own DSP features for the K2.  User supplied alternate DSP code will be 
posted in a special KDSP2 download page on the Elecraft web page. (DSP source 
code and K2 interface link module will be placed on this web site by 6/30/03.)

The KDSP2 is priced at $219. Additional information, pictures and orders can 
be placed via our web page at http://www.elecraft.com .  KDSP2 units will be 
introduced and limited quantities will be available at the Dayton Hamvention, 
May 16 � 18th (Booth 196-7). Orders placed via our web page will begin 
shipping within two weeks following Dayton.