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Subject: PacketRadioDigest 2000/35
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Packet-Radio Digest Sun, 13 Feb 2000 Volume 2000 : Issue 35
Today's Topics:
Packet: FSCC4 card and high speed modem
WTB: Pactor II
Send Replies or notes for publication to: <Packet-Radio@UCSD.Edu>
Send subscription requests to: <Packet-Radio-REQUEST@UCSD.Edu>
Problems you can't solve otherwise to brian@ucsd.edu.
Archives of past issues of the Packet-Radio Digest are available
(by FTP only) from ftp.UCSD.Edu in directory "mailarchives/packet-radio".
We trust that readers are intelligent enough to realize that all text
herein consists of personal comments and does not represent the official
policies or positions of any party. Your mileage may vary. So there.
Loop-Detect: Packet-Radio:2000/35
----------------------------------------------------------------------
Date: Sat, 12 Feb 2000 15:42:27 GMT
From: "Radio Club F6KBF / MAISONS-LAFFITTE" <f6kbf@multimania.com>
Subject: Packet: FSCC4 card and high speed modem
PACKET RADIO " FSCC4 " CARD
1 - DESCRIPTION
This card named "EASY SCC4" has been realized by a French amateur radio
F1FRV, to reply to the needs of PACKET RADIO network NODES and BBS sysops.
Design has taken into account the difficulties encountered in use with
different SCC cards existing on the European market, and has integrated the
necessary functions for an easy exploitation.
This card provides four serial ports to modems or TNC'S.
It is possible to install up to four cards on the same PC (16 ports).
2 - CRITERIA OF DESIGN
Possible realization by the "average Ham" able to read a lay out, and to
hold a soldering iron
by the right side... or having friends to help him...
Compatibility with software's, protocols and drivers of packet radio
transmissions: FLEXNET, NOS, THENET, ROSE, FPAC, AX25, TCP-IP, KISS, XSCC of
PE1DNN, TFPCX of DG0FT, ASYSCC of IK5NAX etc. when declared as "OPTOSCC ®"
3 - TECHNICAL CHARACTERISTICS
Double side printed circuit board with metallized holes, serigraphy and
solder masks.
ISA 16 bits card (length 200 mm) allowing for use of IRQs 3, 4, 5, 6, 7, 9,
10, 11, 12, 14, 15.
Four synchronous or asynchronous, simplex or duplex ports, with only one IRQ
by card.
Speed of transmission and mode of each port configurable separately by
software.
Four possible address selectable by jumpers (150h, 300h, 2B0h, 2C0h).
Protection against supply over voltages by " TRANSIL® " diode.
Protection against over currents by resettable fuses "POLYSWITCH ®" or
"MULTIFUSE ®".
Possibility of supplying power to the modems by the card, in 12V or 5 V, by
the serial cables.
" Watchdog " circuit for automatic reset of the PC, after temporization, in
case of software "hang".
Possibility of using the internal clock outlet of the card to synchronize
external modems.
Clock outlet configurable in clock x 32 or clock x 16 (G3RUH modems).
Possibility of using for the synchronization of each port, either the clock
divider of the card, or the
TXclk x 1 coming from an external modem.
Re synchronization and re shaping of clock signals entering and exiting the
card.
Activity LED's, and test points for check of clocks on each port, with
frequency counter or oscilloscope.
Bufferisation with line drivers for all signals entering and exiting the
card. These circuits protects the card (sometime in burning...), in case of
severe accident or mistake on the external equipment's.
Oscillator is designed to accept crystals of 4.9152 MHz and even multiples,
and has built in dividers by 1, 2 and 4 to adapt to the different
configurations and available crystals.
4 - HOW TO BUY
This Kit, including 10 MHz 85C30's, pre wired connectors, printed circuit
board, and all necessary components and accessories, is commercialized by
the French company AEI.
It will be not be available before March 2000 (due to delivery time of some
parts).
Price list is on the web site of the company AEI (www.aeitech.com).
Schematics, lay outs, technical documentation on the 85x30's and a lot of
other ham related files and links, are on the web site of the radio club
F6KBF (www.multimania.com/f6kbf).
5 - FUTURE DEVELOPMENTS
A GMSK modem compatible G3RUH, K9NG, DF9IC etc. for transmission speeds of
4,8 to 200 KBits/s is in preparation. Design is finished, and the
realization of prototypes will be made during March 2000.
Availability is announced for April / May 2000.
Schematics, lay outs, technical documentation on specific circuits are on
the web site of the radio club F6KBF (www.multimania.com/f6kbf).
>.
------------------------------
Date: Sat, 12 Feb 2000 20:47:27 GMT
From: "G. Bohner" <gbohner@tampabay.rr.com>
Subject: WTB: Pactor II
If you have a Pactor II modem for sale, Please email GBohner@aol.com.
>.
------------------------------
End of Packet-Radio Digest V2000 #35
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