QSO TODAY AMATEUR RADIO PODCAST
  • Podcasts
    • Eric's Favorite Podcasts
    • QSO Today Podcast Archive >
      • Complete List of Podcasts - Libsyn
      • iTunes List of QSO Today Episodes
      • Download Podcast List as PDF
  • Blog
  • Transcripts
  • Sponsors
    • icom
    • Sotabeams
  • About
  • Contact
  • Subscribe
  • Donate
  • Expo

W1HKJ

6/6/2015

6 Comments

 

Episode 044 - David Freese - W1HKJ

Picture
Combining the software development skills from his thirty-five year career in the US Coast Guard and his hearing loss drove David Freese, W1HKJ, into the early HF digital modes and eventually to support GMFSK software. Building on this popular platform, David then went on to develop FLdigi, one of ham radio’s most popular software programs for encoding and decoding digital transmissions. David discusses his ham radio journey that led to the “FL” line of open source software products with Eric Guth, 4Z1UG, in this QSO Today.

Read More
Listen to Podcast
Home town: New York City, NY

Attended: US Coast Guard Academy, New London, CT

Learned CW, in 1957, by using a signal lamp for boat to boat communication during radio silence.

First License: KN2LBM,  Novice 1957

Upgrade:  K2LBM, General

Loran C System -  coastal radio navigation system that allows a receiver to determine its position by listening to multiple low frequency beacon transmitter. 

First Rig: B&W 6100 Transmitter, Harmurland Receiver

Yakutat, Alaska - David lived here in 1964, during the great earthquake.  

Current Rigs: 
  • Yaesu FT-950 Transceiver
  • Kachina 505 DSP transceiver
  • Ten-Tec Pegasus SDR Transceiver

Copper Magnetic Loop Antenna for 40 to 20 meters Here is one by George Sharp, KC5MU

Digital Modes - 
G4UCJ's Radio Website on digital modes includes discussions of the most popular. 

FLdigi Software for digital Modes
  • David built based on early work by Tomi Manninen, OH2BNS for gMFSK. 
  • FLdigi is public domain software under general public software license
  • Written in C++
  • 40 Digital Modes

FLdigi add-on programs here 

Voice of America has a service called VOARadiogram where they broadcast MFSK32 on 17870 Khz. FLDigi can be used to decode it.

Murray Greenman, ZL1BPU, inventor of Digital modes:  mfhsk dominoex

Con Wassilieff, ZL2AFP, developer of the FSQ digital mode (Fast Simple QSO chat mode)

Patrick Lindecker, F6CTE - creator of the RSID and Multipsk digital transceiver.

The RSS Feed for all audio content from QSO today is available from here. 

Please join our QSO Today community by pressing the button below. It is the best way to suggest guests and topics, and provide feedback to Eric, 4Z1UG.
Join our QSO Today Community
Picture
Barker and Williams 6100 Transmitter
Picture
Kachina 505D SDR Transceiver_
Picture
FLdigi Screen Shot
Picture
PSK31 Waterfall Display
6 Comments
Todd Hansen
6/13/2015 03:03:38 pm

Hello David:
You made a great program. That is my digital program. I have been to Yakutat many times years ago. What a place. Loved the people and wilderness, fishing. I was also born in NYC. 1953.
73,
Todd
AL7PX

Reply
Oscar Alonso
6/16/2015 01:35:20 am

Eric,

A real good Podcast with David (W1HKJ). I very much enjoyed it.

Thank you David and team for the excellent software called "FLDIGI".

73's,
Oscar
N6PAZ

Reply
Chris VK4FR
6/16/2015 09:01:20 pm

An excellent edition, Thanks.

Reply
Eric 4Z1UG
6/17/2015 05:05:58 am

Thanks folks. I will forward the message to David.

Reply
John C Wirtz link
1/8/2016 06:09:24 pm

Please pass on my regards to Dave, a very long time friend, confidant, study partner amongst much more. I would very much like to get his email address..

Reply
william spencer, ka4zbn
10/2/2020 07:49:19 pm

Thank you for keeping this QSO posted. I have been studying the FLDIGI code as available from Git\hub and extremely impressed. I have used it for years but never looked under the hood till I retired last year. I have wanted a slightly better CW decoder but love the PFSK31 and RTTY modes. Thank you David Freese - well done.

Reply

Your comment will be posted after it is approved.


Leave a Reply.

    Sponsors

    Picture
    Picture
    My Amazon Link
    Picture
    As an Amazon Associate I earn from qualifying purchases.

    Listen on: 

    RSS Feed

    Picture
    Picture
    Picture
    Picture
    Picture
    Picture
    Picture
    Picture

    Podcast Archives

    January 2021
    December 2020
    November 2020
    October 2020
    September 2020
    August 2020
    July 2020
    June 2020
    May 2020
    April 2020
    March 2020
    February 2020
    January 2020
    December 2019
    November 2019
    October 2019
    September 2019
    August 2019
    July 2019
    June 2019
    May 2019
    April 2019
    March 2019
    February 2019
    January 2019
    December 2018
    November 2018
    October 2018
    September 2018
    August 2018
    July 2018
    June 2018
    May 2018
    April 2018
    March 2018
    February 2018
    January 2018
    December 2017
    November 2017
    October 2017
    September 2017
    August 2017
    July 2017
    June 2017
    May 2017
    April 2017
    March 2017
    February 2017
    January 2017
    December 2016
    November 2016
    October 2016
    September 2016
    August 2016
    July 2016
    June 2016
    May 2016
    April 2016
    March 2016
    February 2016
    January 2016
    December 2015
    November 2015
    October 2015
    September 2015
    August 2015
    July 2015
    June 2015
    May 2015
    April 2015
    March 2015
    February 2015
    January 2015
    December 2014
    November 2014
    October 2014
    September 2014
    August 2014
    July 2014

    Categories

    All
    10 GHz
    160 Meters
    Allstar Link
    AM
    Amateur Television
    AMSAT
    Antennas
    Antique Telegraph Keys And Bugs
    Apps
    APRS
    Arduino
    AREDN
    ARES
    ARISS
    ARRL
    Audio Processing
    Ballooning
    Balun
    BITX
    Blind
    Blog
    Boat Anchors
    Boy Scouts
    Broadcast Radio
    CERT
    Collins 74A4
    Collins KWM2
    Contesting
    CQ World Wide
    Crystal Set
    CW
    DDS Direct Digital Synthesizer
    Dead Bug Construction Method
    Digital Television
    DMR Hot Spot
    DMR Hot-spot
    DMR Marc
    Double Side Band
    Drake TR4
    D-Star
    DX
    DXCC Honor Roll
    DXpedition
    Echolink
    Elecraft
    Elecraft K3
    Elecraft KX3
    Electronic Building Techniques
    Electronic Noise And Interference
    Electronic Tools
    EME Moon Bounce
    Emergency Comm
    Emergency Power
    Ex Military Radio
    Ex-military Radio
    FCC
    Fflghtaware
    FlexRadio
    Flow State
    FM And Repeaters
    FSQ
    FT 8
    FT-8
    G5RV
    Hall Of Fame
    HamSCI
    Heathkit
    Heathkit Hw8
    Hexbeam Antenna
    HF Digital Modes
    Home Brew
    IARU
    Icom
    International Hams
    International Space Station
    Ionosphere
    IOTA - Islands On The Air
    IRLP
    JOTA
    JS8Call
    JT4
    Kenwood TS 2000
    Kenwood TS-2000
    Kenwood TS440
    Kit Building
    KX2
    Leadership
    Magnetic Loop Antenna
    Maker Faire
    Manhattan Construction
    Manpack Radio
    Maritime Mobile
    Mesh Networking
    Meteor Scatter
    MFSK
    Microwave
    Microwave Roving
    MMDVM
    Museum
    Music
    Nets
    NTS - National Traffic System
    Operating Practice
    Packet Radio
    PACTOR
    Propagation
    QCWA
    QRP
    QRPP
    Races
    Radar
    Radio Astronomy
    Raspberry Pi
    Remote Control
    Remote Hams
    Repeaters And Remote Base Stations
    Russ Farnsworth Morse Code Method
    Satellites
    SDR
    Short Wave Listening
    Single Operator Two Radio
    Single Side Band
    Slow Scan Television
    Software Defined Radio
    SOTA
    Space Shuttle
    SSB
    System Fusion
    TAPR Tucson Amateur Packet Radio
    TAPR - Tucson Amateur Packet Radio
    Test Equipment
    Top Band
    Ugly Construction Method
    UHF
    Unique Contributions
    US Army MARS
    Vacuum Tube Radio
    VHF
    Video
    Vintage Gear
    Winlink
    WSPRnet
    Yaesu FT-840
    You Tube
    You-Tube

Proudly powered by Weebly