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- December 23, 1987
- DSP Group notes de W3IWI
-
- This set of notes is intended to help you get started on the TAPR/AMSAT
- DSP project.
-
-
- 2. Communications:
-
- I view intra-group communications as the key to DSP progress. As of now
- few of us know each other. And yet from both AMSAT and TAPR projects I
- have seen that the ability of people (especially when they are spread out
- all over the world) to work as a team and to draw on each other's
- strengths requires that we have good communications channels. I have seen
- teams with members separated thousands of miles work well and I have seen
- groups in a local area fall flat on their collective faces -- the
- difference is communications.
-
- Team communications fall into two categories -- bilateral and multi-
- lateral. If I want to coordinate with Joe Blow, I'll pick up the phone or
- the mike on the radio (remember we ARE amateurs!) and we can chat. Some
- people never have their radios on, or may be too far away, or work screwy
- schedules so that a telephone call only serves to piss off the XYL. Ergo,
- we computer phreaques seem to prefer to let our fingers do the chatting
- and use electronic mail.
-
- If we are trying to keep a whole team tied together, then communications
- become even more difficult. Multi-way telephone calls are only marginally
- practical. Hence we seem to prefer to do our communicating by electronic
- means for speed and/or by newsletters when electronic channels fail.
-
- Unfortunately linking people together requires some sort of 'real'
- network. The 'real' networks seem to fall into two categories: Those
- which co$t us personal money to use, and those which our employer
- subsidises.
-
- I have reviewed the questionaire responses and have found that about 50%
- of the project players have access to either an ARPAnet, UUCP or DECNet
- electronic mail communications channel. Many of the people also have
- CompuServe accounts although no one has anything good to say about it.
- Quite a few also have access to AMSAT's TeleMail network on GTE TeleNet.
- Unfortunately there is no truly universal common denominator.
-
- Since ARPAnet (and various affiliated Internet networks) seems to tie
- together a lot of the people, and since KA9Q has written some super TCP/IP
- code that will run on a PC, I have taken the bull by the horns and put an
- FTP file server online; right now it is on my desk at work and is running
- Phil's code in a background Desqview partition on a PC's Limited 386
- machine which is tied into the Goddard Ethernet LAN. The node is:
-
- 128.183.10.100 = tomcat.gsfc.nasa.gov
-
- The TOMCAT name does not yet appear in most ARPA routers and host tables,
- but it should be there next month. When you FTP to TOMCAT you can log on
- as user = anonymous and with your call as the password. You will find
- yourself with read/write (but not replace/delete) access to a directory
- named \PUBLIC. The \DSP subdirectory is then available as a repository for
- the latest code; all the material on these disks is already available in
- \PUBLIC\DSP on TOMCAT. TOMCAT also has in its \TCP directory the latest
- code from KA9Q et al.
-
- I really hope that we can use the IP network to keep people tied together.
- I would suggest that those of you who do not have accounts on a host that
- has IP connections should get them ASAP. I wonder if there is some
- benevolent host who could allow access for various 'orphans'?
-
- Depending on usage, I may decide to set up TOMCAT with a dial-in (which
- do you prefer -- 1200 or 2400 baud -- only one can be supported since
- KA9Q's code and our ROLM switch won't autobaud with each other) SLIP port
- and/ or a gateway to the growing amateur TCP network. I may move the
- TOMCAT functions over to a dedicated XT, or I may move all these
- functions over to one of our UNIX systems in the future.
-
- On CompuServe, I understand that HAMNET S17 has been set up for NNC/PS186/
- DSP activities. How many of you will need to have material posted there?
- Do we have a volunteer who can act as a relay between the disconnected
- networks?
-
- If there is anyone who is on DECnet/SPAN/SESnet or UUCP with a host that
- does not have an IP address, I suppose we could figure out a way to get
- stuff to you. Again -- sound off on what networks you can tap.
-
- One other communications conduit has been offered to us. Mike Lamb (N7ML)
- has told me that AEA is starting up a telephone-line BBS (the software
- has been configured by Norm Sternberg, W2JUP who tells me it is already
- online for AEA's corporate business) which will have an 800-area code
- dial-in port. Since Mike and AEA are vitally interested in supporting DSP
- development, they could probably have their arm twisted to make an out-
- of-hours service available to us.
-
- But with all our good intentions to allow anachy to prevail and use
- electronic communications channels, I suspect that we are going to need
- someone to play editor to pull diverse inputs together and circulate a
- 'newsletter' either by electronic mail, mailing floppies or (gawd forbid)
- mailing paper. Assuming he hasn't had second thoughts about it, Courtney
- Duncan (N5BF, now living in Pasadena CA) has offered to do this.
-
- In the future, our activity could grow. Several of us have already begun
- gedanken designs of super DSP engines (Motorola 56000? TMS32025?). Our
- initial DSP team will undoubtedly grow from the two dozen dedicated
- hackers and applicators to encompass hardware designers. We really need to
- plan our communications needs accordingly.
-
- Finally -- there is one more communications need we have -- PUBLICITY!
- N4HY and I have been hounded by W4RI and WA2LQQ for QST/QEX articles on
- DSP and we simply ain't had the time! The presentations we have given at
- various symposia have served to whet the interests of a lot of people, but
- we need more. Initially the publicity is important to bring out more hard-
- core workers. Later, as we achieve success, we will need to document our
- progress for the world.