home *** CD-ROM | disk | FTP | other *** search
- INTRODUCTION TO PACKET RADIO - PART 8 - by Larry Kenney, WB9LOZ
-
- This part of the series discusses, in detail, the various parts of the
- packet message. The following is an example of what you see when listing
- messages on a BBS. On some systems the information is displayed in a
- different order, but the same information is given.
-
- MSG# STAT SIZE TO FROM @ BBS DATE/TIME SUBJECT
- 4723 P 1084 WD5TLQ WA6XYZ N5SLE 0604/1240 Software working great!
- 4721 BI 771 PACKET WB9LOZ ALLUSW 0604/1154 INTRODUCTION TO PACKET
- 4717 BF 2387 EXAMS W6NLG ALLCAN 0604/1020 FCC Exams: June - Dec.
- 4715 T 275 94114 W1AAR 0604/0959 QTC San Francisco 415-821
- 4712 BF 918 ALL N6ZYX ALLCAN 0604/0845 9600 BAUD DEMONSTRATION
-
- The MESSAGE NUMBER is assigned by the BBS program when the message is
- received and it cannot be changed. The numbers are assigned sequentially.
-
- The STATUS of the message includes several different bits of information.
- The first letter of the STATUS indicates the TYPE of message: B for
- Bulletin, P for Personal, or T for Traffic for the National Traffic System.
- Bulletins are messages of general interest to all users, and are available
- to be read by everyone using the system. Personal messages are listed only
- for the sender and the addressee, and they're the only ones that can read
- them. (Anyone in monitor mode could see a personal message as it's being
- sent over the air, of course.) The list above would have to have been
- requested by WA6XYZ since it lists an outgoing personal message. Traffic
- messages, type T, are messages used for handling traffic on the National
- Traffic System. (Refer to part 12 of this series for information on NTS.)
-
- STATUS also shows if the message has been read, has already been forwarded
- to all designated stations, is in the process of being forwarded, or is an
- "old" message. You might see one of these letters: Y - yes, it has been
- read, F - it has been forwarded, I - it's in the process of being
- forwarded right now on another port, or O - the message has been on the BBS
- long enough to become an "old" message. "Old" can be anywhere from 2 days
- for an NTS message to 3 weeks for bulletins. The time frame for each
- message type is specified by the local sysop. The "O" is mainly used to
- catch the attention of the sysop.
-
- The SIZE indicates the combined total of characters, including punctuation
- in the message.
-
- TO is who the message is addressed to or it can be a message category. The
- call of the addressee is entered for a personal message, and for bulletins
- it could be ALL, EBARC, USERS, etc. TO is also used to categorize bulletins
- by particular topics. You might find a message addressed TO AMSAT, TO
- PACKET or TO SALE, when it is actually a message about AMSAT, about PACKET
- or about equipment for SALE. For NTS messages TO is the zip code of the
- addressee.
-
- FROM shows the callsign of the station originating the message.
-
- @ BBS is used if you want a message to be forwarded to someone at another
- BBS or for general distribution using a forwarding designator. In the list
- shown above, the personal message would automatically be forwarded to
- WD5TLQ at the N5SLE BBS. By entering a special designator, such as ALLCAN,
- in the "@ BBS" column a message can be forwarded to specific areas. (See
- Part 6 and 7 of this series for details on addressing messages and using
- forwarding designators.)
-
- Next is the DATE and TIME when the message was received at the BBS you're
- using. (If the message was originated at another BBS, the date and time
- when the message was originally entered will be shown in the forwarding
- headers, as explained below, and at the top of the message when you read
- it.) Keep in mind that the date and time indicated can be either local
- time or GMT (Zulu time) depending on the time used by the BBS.
-
- The SUBJECT (or TITLE) is a short line telling what the message is all
- about. It should be brief, but informative. For bulletin type messages,
- this is the information that determines whether or not a person is going to
- read your message when he sees it in the message list.
-
- The parts of the message mentioned so far are all included in the header of
- the message, and are seen when listing messages. The hierarchical address
- and the message ID are not shown in the normal listing. On some systems,
- such as those using W0RLI software, entering a semicolon after the list
- command will give you this information. (Example: LL 15 ;)
-
- If a message has been forwarded from another BBS, forwarding headers are
- added at the top of the actual message text. This is information added by
- each BBS that was used to get the message from its origination point to the
- destination. Each BBS adds one line showing the time the message was
- received by that particular BBS, its call sign, and usually the QTH, zip
- code, and message number. Other information is often added, at the
- discretion of the sysop there. If you use the RH command, rather than just
- R, when reading a message, such as RH 7823, you'll receive complete
- headers. With just the R, headers are reduced to a list of the BBS
- callsigns. Complete headers are useful if you want details on the path the
- message took to reach you or how long it took to be forwarded from system
- to system from the source to destination.
-
- The TEXT of the message contains the information you want to convey to the
- reader. It can be of any length. When entering a message into a BBS, use
- carriage returns at the ends of your lines, as if you were using a
- typewriter. The normal screen width is 80 characters, so you should enter
- a carriage return prior to the 80th character on each line. Don't allow
- the automatic wrapping of lines to occur. A message entered without
- carriage returns is very difficult to read, as words are cut at improper
- points, lines vary drastically in length, and blank lines are often
- inserted.
-
- You should include your name, call and packet address at the end of the
- text so that the person reading your message will be able to send a return
- message to you if he or she wishes to do so.
-
- You complete the text with either a Control-Z or these three characters:
- the "slash" (/) plus the letters "EX". These characters must be on a line
- by themselves. On some systems only the Control-Z will work. This tells
- the system that you've finished entering the message.
-
- Messages that are going to be forwarded to several BBSs or across a long
- distance should be limited in size. Extremely long messages can tie up the
- forwarding system unnecessarily, so users are advised to break up long
- messages into parts, keeping them to a length of 2 - 3 K each.
-
- - - - - -
-