Episode 044 - David Freese - W1HKJ
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.
| 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: 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
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. |  Barker and Williams 6100 Transmitter  Kachina 505D SDR Transceiver_  FLdigi Screen Shot  PSK31 Waterfall Display |
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