Ramsey Electronics FZ-146 Bedienerhandbuch

P-IBM • 1 PACKET RADIO KIT FOR IBM PC Ramsey Electronics Model No. P-IBM Get in the packet fun with your IBM-Compatible computer and a

P-IBM • 10 at the rear of the board. Before soldering, make certain that it is seated squarely on the board and the pins are protruding thru the boar

P-IBM • 11 [ ] 12. Install R17, 100 ohms [brown-black-brown]. [ ] 13. Install C7, .1 uf (marked .1 or 104). [ ] 14. Install trimmer potent

P-IBM • 12 [ ] 27. Install C12, .001 uf (marked .001 or 102). [ ] 28. Install R13, 470 ohms [yellow-purple-brown]. [ ] 29. Install R14, 470

P-IBM • 13 [ ] 44. Install R7, 100K [brown-black-yellow]. [ ] 45. Install C5, .001 uf (marked .001 or 102). [ ] 46. Install R1, 100K [brow

P-IBM • 14 Modem will WORK is to now REVIEW your construction steps with care and discipline. This is important, because you'll have many other

P-IBM • 15 SETTING UP P-IBM PACKET AND BAYCOM WITH RAMSEY FX-SERIES VHF TRANSCEIVERS: NOTE: Refer to selected steps as needed for basic start-up w

P-IBM • 16 1. Interconnect FX transceiver and Modem with 5-pin DIN cable such as Radio Shack 42-2151. 2. Install jumper from EXT AUDIO

P-IBM • 17 MODEM-TO-TRANSCEIVER HOOKUP: GENERAL DETAILS: Take the time and care to construct your cable set carefully, so that this link in your p

P-IBM • 18 MODEM-TO-COMPUTER CONNECTION (Serial RS232C): At this stage of the computer evolution, this connection should be s-i-m-p-l-e: get a DB9F

P-IBM • 19 The lines marked * are those actually used by the packet modem. Consult the appendices of your computer manual for more detailed RS232C

P-IBM • 2 RAMSEY TRANSMITTER KITS • FM-10 FM Stereo Transmitter • FM-1,2,3,4 FM Wireless Microphones • PB-1 Telephone Transm

P-IBM • 20 P-IBM MODEM CIRCUIT DESCRIPTION: The Texas Instruments TCM3105 FSK Modem IC (U2) is the heart and soul of this proven modem circuit. The

P-IBM • 21 SOME BAYCOM COMMANDS AND KEY FUNCTIONS : These are summarized for your convenience primarily to illustrate the capabilities of a softwa

P-IBM • 22 KEY FUNCTIONS: PAGE UP/DN Page Scrolling CTRL-PAGE UP/DN

P-IBM • 23 The local 2M packet channel was quite alive with activity during the entire weekend. But, all that was happening on my setup was that the

P-IBM • 24 ONCE! "Great!" I said to myself, wondering what was so wrong with the FX-146 that I had built so carefully while writing its

P-IBM • 25 The Ramsey Kit Warranty Please read carefully BEFORE calling or writing in about your kit. Most problems can be solved without contacting

P-IBM • 26 Quick Reference Page Guide Introduction to the P-IBM ... 4 Parts List ... 7

P-IBM • 3 IBM COMPATIBLE PACKET RADIO INTERFACE KIT Ramsey Publication No. P-IBM Price $5.00 TABLE OF CONTENTS

P-IBM • 4 INTRODUCTION TO THE P-IBM PACKET RADIO: Think for a moment about all those "unusual" computers you saw at the last hamfest, the

P-IBM • 5 IMPORTANT SOFTWARE NOTICE The current version of "BAYCOM" packet communications software is supplied to you FREE at o

P-IBM • 6 Please read BEFORE constructing your Packet Radio Modem: IN CASE OF DIFFICULTY: If you are unsuccessful in achieving packet data radi

P-IBM • 7 PARTS SUPPLIED WITH THE P-IBM KIT: CAPACITORS [ ] 2 33 picofarad (C6,C9) [ ] 9 .001 uf [marked .001, 102 or 1nf] (C1,C3,C5,C8,

P-IBM • 8 PC BOARD LAYOUT:

P-IBM • 9 KIT BUILDING TIPS: Use a good soldering technique - let your soldering iron tip gently heat the traces to which you are soldering, heating