80-Bus News

  

March-April 1984, Volume 3, Issue 2











Page 51 of 51





TRANSDATA MODEM CARDS.

Brand new, tested and aligned 300 BAUD answer and originate acoustic telephone modem cards manufactured by TRANSDATA for their model 317 acoustic modem. Full CCITT specs. Requires only a few components to complete (no case available). Computer interface is 300 BAUD RS232 1/0. The power supplies of +12 volts at 180mA and -12 volts at 170mA are required. Card size 350mm x 105mm. May be directly connected using the GEC LTU 11 coupler (see below). Full circuit description, drawings and connection data supplied. Suitable for use with computers fitted with 300 BAUD R5232 1/0. Software for Nascom & Gemini published in the last issue.

Card only at 29.95 inc. VAT. (26.04 + VAT)

Supplied with LEDs connector, switches and transducers at 24.95 inc. VAT. (30.39 + VAT)

Supplied with LEDs connector, switches and GEC LTU ll directcoupler at 45.95 inc. VAT.(39.96+ VAT)

Carriage & packing 1.00

BIG BIG BIG POWRR SUPPLIES x-equipment power supplies for those who need a lot of power. Type 1 +5 volts at 20 amps. 7” x 4" x 3.5" ona. Switch mode. 220-240 V AC in. 39.95 inc. VAT. (34.73 + VAT) Carriage & Packing 2.00 Type 2 +12 volts at 4 amps, +5 volts at 40 amps -5 volts at l amp, “12 volts at 1 amp 14.5 x 6" x 3.5” ova. (including fan) Thyristor switch mode. 220-240 V AC in 79.95 inc. VAT. (69.52 + VAT) Carriage & packing 4.00

MULTITECH MPF-II PRINTER

The Multitech MPF-IT thermal matrix line printer features 40 column print width. Modified Centronics interface (requires 15uS strobe or use our interface . adaptor). 150 – 180 \ Lines per minute. } Bidirectional 7 x f 10 matrix. 4.4" # paper. Suitable for Nascom, Gemini, BBC, Dragon, Tandy computers, etc, and Tona

Unrepeatable value at 49.95 ine VAT. (40.43 + VAT.) Interface adaptor with leade 14.95 inc. VAT (13.00 + VAT). Paper 2.95 per roll inc. VAT. UK Carriage & packing 1.00

“GEC LTU 11 Mk IT PRESTEL MODEM CARD

Manufactured for the GEC stand alone PRESTEL unit, computer interface is TTL logic level at 75 BAUD transmit and 1200 BAUD receive. (Suitable for use with mogt computers fitted with speed selectable UARTs or twin independant serial 1/0 at TTL levels.) Output level is at -13dBm 600 ohms, input at -36dBm, for connection to the GEC LTU 11 direct coupler. Power requirement +5 volts at approx. 250 mA. Designed for direct connection to the GEC LTU Ll direct coupler, to provide line connect and autodial facilities. Card size 266mm x 140mm. Supplied with full circuit description and connection data. Card only at 14.95 ine. VAT. (13.00 + VAT) Supplied with GEC LTU 11 direct coupler

at 27.95 inc.VAT. (24.30 + VAT)

Carriage & packing 1.00

THE 69SD5 HALL EFFECT KEYBOARD

Compact, 64 key + 5 function keys, Hall effect keyboard with reprogrammable (2716) ASCII output decoder EPROM. Steel key frame for good rigidity. Negative going strobe. Requires +5 volt and -12 volt supplies. 29.95 inc. VAT (26.04 + VAT). Carriage & Packing 1.00.

Features 7" diag. green screen, mains operated, detachable key pad, robust case 14’ 12’ 0715" 3 cassette recerder data store facility. Sosag video output fer other monitors, ws security lock, ef.

CE et cca

rank ae ae oma and a a | 49.95 a

Prestel information! ROR Me aie ee lI

i ORDER BY POST OR PHONE OR CALL IN AND SEE FOR YOURSELF j

GEC LTU 11 DIRECT TELEPHONE COUPLER

Telephone direct coupler, with isolation transformer to the rigorous 1978 (5KV) spec. (not the more recent, 2KV, spec.}). Relays are provided for line select and autodial. Power supply (for line control relays) +5 volts at 200 mA. TTL logic inputs for the line control, tone input to the unit at -13dBm, output at -35dBm. Supplied in a plastic case 195mm x 108mm x 65mm complete with PO type 96 5-pole plug on lead. Suitable for use with the GEC LTU 11 Mk II and the TRANSDATA modem cards. Full connection detaile and circuits are supplied. Supplied complete at 14.95 inc. VAT. (13.00 + VAT) Carriage & packing 1.00

ORDER BY POST OR TELEPHONE OR CALL IN AND SEE FOR YOURSELF

T Credit Sales avaliable axk for detaiis. COMEUTE aS HOF W21E0 | pee cummin gad

Telephone: 01-402 6822

—», Professional computer case with wr) keyboard cutout. 18" x 15.5" x 4.5" (front slopes). Ideal for single board computers like the Nascom or Gemini Multiboard G cards max.) Very heavy guage (.25") plastic with metal base. Attractive silver gray finish. 27.50 inc. VAT. (23.91 + VAT). UK Carriage & Packing 2.10

HENRY’S INCREDIBLE CP/M UTILITIES DISK @ things you ever wanted: The disk

cataloguing and file dating suites. File compare, string and byte search utilities, ASCII file compression suite, system independant disk repair utilities and all sorts of other goodies. Most are true CP/M system independant utilities and will work with any CP/M system. Supplied on most popular 5.25" formats (please state when ordering) at 17.25 inc. VAT.

Carriage & packing 50p

ccRez

Replaces the CCP in CP/M and provides hierarchical file searches through user areas (invaluable when using more than one user area on high capacity drives). New commands for getting and executing files, and lots more. Now available rewritten as an M80 .MAC file using Z80 mnemonics as well as the earlier .ASM file, with two recently discovered bugs fixed. Supplied in most popular 5.25" formats (please state when ordering) at 11.50 inc. VAT. Carriage & packing 50p

MDIS THE INTELLIGENT DISASSEMBLER

MDIS is a CP/M disassembler useable on most standard CP/M machines, ewitchable for either 8080 or Z80 mnemonics. Command syntax is designed to be similar to the Microsoft M80 assembler, and redirected input from .-DAT files is allowed. The output files to printer or disk may include the disassembled code or in M80 format and output label types are differentiated by different letter prefixes. A powerful package at a price which is a let less than its competitors. Supplied in most popular 5.25" disk formats (state type when ordering) at 57.50 inc. VAT. Carriage & packing 50p

{ OPEN 6 DAYS A WEEK ma


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