Check Kenwood site: http://www.kenwood.net/  Then Amateur Radio, "Jump To" on pull down menu select "Software RCP/MCP"  Should find Mcp_D700.exe TM-D700A (MCP) Memory Control Program Software

Check the MixW Yahoo egroup: http://groups.yahoo.com/group/mixw/
The extra MixW help files are in the "Files" section. Macros are configured by right click on a macro button, there are many types of macros so look at the macro "menu".  Also if you filled out your "Personal data" in MixW under "Configure" you call and QTH will be inserted in the macros by default. Also post on the MixW site, a lot of help there from users too.  AFSK is easy to use and hardly anyone but the "died in the wool" RTTY users do the hard key FSK these days, the sound card programs have great "audio filters" built in.  

Post the question on the WinPack Yahoo egroup, someone will have an answer: http://groups.yahoo.com/group/winpack/

Check MixW Rig Expert USB Transceiver Interface: http://www.mixw.net/RigExpert/readme.html

Maybe to much information, but look at this site:
http://www.qsl.net/wm2u/interface.html

Check http://www.n9nu.net/linux/linux.php
Seems to be the ham Linux "Guru". Also N9NU has a link on his page for an IRC channel where they discuss ham Linux applications.

A few weeks ago on about 14.070 (PSK) I monitored a station who must have left his VOX active after a PSK QSO.  For a half hour could hear him and another ham chatting on a repeater, most likely two meters, the repeater ID'd in voice but was to low of volume and mixed with PSK tones to catch the ID.  I know this was not a harmonic of two meter FM. Only could get parts of calls due to the PSK tones mixed in with the voices.  The calls were in the 9 area so was not local freak signal mixing.  Hope the ham at the base realized what he was broadcasting in the CW part of the band when he shut down the sation for the day or night.  

Might check the TAPR site, one of the "sigs" might have info: http://www.tapr.org/tapr/index.html
This list was posted 3/6/2004: http://ftp://ftp.ucsd.edu/hamradio/44.rev

Might also look at Communications Specialists boards, small and stable: http://www.com-spec.com/index1.htm

Another thing you might check is the sound card setting in DigiPan, Configure, Sound card, verify that the correct sound card shows both the same for input and output.  Then also check the Configure, Waterfall drive, this is the receive control, check the slider that coresponds to the input like "Line In" or "What you hear" and that the check mark is under that slider.  Same for Transmitter drive, two things that should show are Volume and Wave sliders the other sliders can be muted, if there is a Line In slider there, that can be used for RX input depending on how the software set up the sound card .  Wave slider set at about the third bar from the bottom, Volume slider controls the audio going to the Mike or modulator of your rig, use the Volume slider to control the output power of the TX, careful not to overdrive.
Check this web page for sound card setting:
http://www.waypoint.com/users/~discobay/section_7.htm

If you could decode them, the messages would be pretty uninteresting stuff, almost like monitoring taxi cab calls on your two meter rig if it has extended receive.

Where are the UPI and AP these days?  Those two were above the twenty meter ham bands back in the 60's.  Gave the old Teletype Model 15's and 28's a good work out, ate up a lot of paper too ;-)

Hello Denny,
Try to answer a few of your questions.  Most common frequency for APRS around the USA is 144.390 simplex.  You should be able to use UI-View and the AGWPE applications together for APRS on the soundcard.  Maybe check the help files in UI-View, Roger is pretty complete with how to set things up with UI-View.  There is a Yahoo egroup for UI-View, and if you search the archives on the group site, there should be an answer or you can post questions to the group: http://groups.yahoo.com/group/ui-view/

Might be difficult to build a TNC without a special CPU chip and EPROM, most of these chips are "owned" by KAM or Timewave who took over the AEA PK TNC Line, and they are for replacement.  Might look for a used TNC here on eHam net or other ham radio classified ad sites.  Lot of TNC's are going cheap as VHF Packet operation in most areas of the USA are dead or pretty much dead.  The TPAR may have some TNC kits you could build: http://www.tapr.org/tapr/index.html

Take a look at: http://www.qsl.net/civ_commander/

If there are any active they would be on 50.290 or 144.150, when six meters was open last spring worked quite a few on 50.290 mostly on the east coast from my QTH.  There is a VHF_UHF user group on Yahoo egroups, might find some activity in your area. http://groups.yahoo.com/group/PSK_VHF_UHF_HAMRADIO/