Specifications

YES. RT Systems now offers a programmer for the FT-817. It is available directly from RT
Systems at www.cloningsoftware.com or 1-678-354-3500 (Tues, Wed, and Thurs, 5:30-
9:00 PM), www.w4rt.com, and several other vendors. Also see TOPIC - CAT CONTROL
SOFTWARE
03/06/01-R
PROGRAMMING
Is the information in the FT-817 Operating Manual regarding "CAT System
Programming" correct?
NO. There are several misprints. (1) In the Opcode Command Chart, under Operating
Mode, "P1 = PKT" should read "P1 = 0C: PKT". (2) In the Opcode Command Chart, under
Read RX Status, "(Note 3)" should read "(Note 4)". (3) In the Opcode Command Chart,
under Read TX Status, "(Note 4)" should read "(Note 3)". (4) Under Note 3: "RX" should
read "TX". (5) Under Note 4: "TX" should read "RX".
29/03/01
PSK31
The manual states on page 39 that the FT-817 can operate in the PSK31 mode. What
is PSK31?
PSK31 is a new digital mode designed by Peter G3PLX. PSK31 is based on the RTTY
mode of operation and useful for live keyboard to keyboard QSO that works at 31.25 baud.
It uses varicode character coding that performs well at 50 wpm. PSK31 is easy to use and
monitor, and gives very good copy under poor or weak signal conditions and is thus
suitable for QRP. Software is available for free for many platforms, including Windows (c)
with SoundBlaster-type soundcard. PSK31 utilizes advanced DSP techniques to generate
a narrow-band filter with a bandwidth of just 31 Hz! Although the PSK31 software includes
digital filters, it often can be helpful to use the CW filter to minimize the AGC pumping of
strong nearby stations. PSK31 stations typically run less than 30 W and worldwide
communications are easily achieved using this mode.
PSK31
Where can I find out more about obtaining PSK31 software?
See the PSK31 Official Home Page at http://aintel.bi.ehu.es/psk31.html. This page also
contains a wealth of information to help you become involved in PSK31.
PSK31
Do I need a TNC (terminal node controller) to operate PSK31?
NO. You just need a computer with a good sound card of the SoundBlaster type. The FT-
817 can be hooked directly to the sound card with excellent results. Follow the instructions
in the FT-817 Manual. You may need to adjust the output of the sound card and the DIG
MIC of the FT-817 to achieve a high-quality PSK31 signal. Transmit control can be manual
by taking the PTT line from the DATA plug to ground. For perhaps more enjoyable
operation, you may find it desirable to build a simple interface or to purchase something
like the popular RigBlaster from West Mountain Radio
(http://www.westmountainradio.com/RIGblaster.htm) or the RASCAL PSK31 kit (Model
FTMDIN) from BUX CommCo (http://www.packetradio.com/psk31.htm).
13/04/01-R