LARRY TELLES, K6SPP FEBRUARY 2013 WHY - - PowerPoint PPT Presentation

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larry telles k6spp february 2013 why digital modes
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LARRY TELLES, K6SPP FEBRUARY 2013 WHY - - PowerPoint PPT Presentation

Feb 17, 2024 216 likes •537 views

LARRY TELLES, K6SPP FEBRUARY 2013 WHY DIGITAL MODES? POWER NECESSARY BASIC COMMUNICATIONS BAND CONDITIONS EMERGENCY COMMUNICATIONS COST OF NECESSARY EQUIPMENT BEST

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SLIDE 1
  • LARRY TELLES, K6SPP – FEBRUARY 2013
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SLIDE 2

WHY DIGITAL MODES?

  • POWER NECESSARY
  • BASIC COMMUNICATIONS
  • BAND CONDITIONS
  • EMERGENCY COMMUNICATIONS
  • COST OF NECESSARY EQUIPMENT
  • BEST OF ALL
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SLIDE 3

TOPICS OF THIS TALK

  • FIVE BASIC COMPONENTS FOR DIGITAL MODES
  • CABLES AND CONNECTORS NEEDED
  • INTERFACE (COMPUTER TO TRANSCEIVER)
  • TYPES OF DIGITAL MODES
  • SOFTWARE NECESSARY
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SLIDE 4
  • CONTROL CABLE

(SOUND CARD) (COM PORT)

  • TO MIC

INPUT PUSH TO TALK

HARDWARE – FOUR COMPONENTS

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SLIDE 5

SIMPLE CABLE INTERFACE

  • RASCAL

DB-9

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SLIDE 6

DIGITAL MODE

(RECEIVE ONLY)

SOUNDCARD INPUT EXT SPEAKER (OUTPUT)

INTERFACE DEVICE

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SLIDE 7

2.2 K 1N4001

RTS DTR GND

1

2 3 4 5 6 7 8 9

2N2222 1N4001

TO PTT ON MIC CONNECTOR TO GROUND ON MIC CONNECTOR TYPICAL KENWOOD MIC CONNECTOR

(CONTROL)

SOUND CARD END INPUT OUTPUT TO MIC AUDIO INPUT FROM RCV AUDIO ON MIC CONNECTOR

(IF AVAILABLE or ext speaker jack on transceiver)

HOMEBREW RASCAL

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SLIDE 8

INTERFACE CAUTION

(ISOLATION & ATTENUATION)

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SLIDE 9

ANOTHER HOMEBREW RASCAL

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SLIDE 10
  • THE USB CONNECTOR
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SLIDE 11
  • PACKET
  • Written Record
  • Faster Than Voice

THOSE DIGITAL MODES

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SLIDE 12

THOSE DIGITAL MODES

  • PSK31
  • Most Popular Mode
  • Narrow Bandwidth
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SLIDE 13

THOSE DIGITAL MODES

  • RTTY
  • Each Bit 22ms Long
  • 45 Baud Most popular
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SLIDE 14

THOSE DIGITAL MODES

  • AMTOR
  • FSK Modulation
  • Not Very Popular Now
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SLIDE 15

THOSE DIGITAL MODES

  • PACTOR
  • Error Correction
  • 200 Baud Transfer Rate

I II

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SLIDE 16

THOSE DIGITAL MODES

  • G-TOR
  • FSK
  • Robust Mode
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SLIDE 17

THOSE DIGITAL MODES

  • CLOVER
  • PSK
  • Full Duplex Operation
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SLIDE 18

THOSE DIGITAL MODES

  • MT-63
  • Fast
  • Wide Bandwidth
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SLIDE 19

THOSE DIGITAL MODES

  • THROB
  • 3 Speeds
  • Experimental Mode
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SLIDE 20

THOSE DIGITAL MODES

  • HELLSCHREIBER
  • Very Old Mode
  • Use by Germans in WWII
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SLIDE 21

THOSE HELLSCHREIBER FREQUENCIES

  • 160 METERS 17 METERS
  • 80 METERS 15 METERS
  • 40 METERS 12 METERS
  • 30 METERS 10 METERS
  • 20 METERS 6 METERS
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SLIDE 22

THOSE DIGITAL MODES

  • OLIVIA
  • CONTESTIA
  • MFSK Mode
  • Mode created in 2005

500 -16 1000-32

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SLIDE 23

THOSE DIGITAL MODES

  • JT-65
  • Dr. Joe Taylor (K1JT)
  • Weak Signal Mode
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SLIDE 24

THOSE DIGITAL MODES

  • SSTV
  • Slow Scan Television
  • Transmitting Images
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SLIDE 25

THOSE DIGITAL MODES

  • DOMINEOF - DOMINEX
  • THOR
  • WSPR

(NO SOUNDS FOR ANY OF THE ABOVE MODES)

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SLIDE 26
  • AM

FM CW BPSK31 QPSK31 FSK31 RTTY PACKET PACTOR AMTOR MFSK THROB MT63 HELLSCHREIBER FAX SSTV

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SLIDE 27
  • CW

BPSK31-63-125-250 QPSK31-63-125-250 RTTY PACKET OLIVIA CONTESTIA JT-65 PACTOR 1 AMTOR MFSK THROB MT63 HELLSCHREIBER DOMINOF- DOMINOEX SSTV

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SLIDE 28
  • CW

BPSK QPSK RTTY OLIVIA CONTESTIA MFSK THROB MT63 HELLSCHREIBER DOMINOEX THOR

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SLIDE 29

THOSE DIGITAL MODES CD

  • DIGITAL MODE SOUNDS
  • MULTIPSK PROGRAM
  • FLDIGI PROGRAM
  • DIGIPAN PROGRAM
  • HAMSCOPE PROGRAM
  • INTERFACE DIAGRAMS
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SLIDE 30

THOSE DIGITAL MODES (SUMMARY)

  • COMPUTER OR LAPTOP
  • SOUND CARD
  • CONNECTING CABLES
  • PC – TRANSCEIVER INTERFACE
  • DIGITAL SOFTWARE