Additional Reading

Raspberry Pi and Wsprry Pi Related

• “BCM2835 ARM Peripherals”

• “BCM2835 Audio Clocks”

• “GPIO Pads Control2”

• “Clock Management”

• “pagemap, from the userspace perspective”

WSPR and Other Ham References

• “WSJT: New Software for VHF Meteor-Scatter Communication.” (QST, December 2001)

• “JT44: New Digital Mode for Weak Signals.” (QST, June 2002)

• “EME with JT65”(QST, June 2005)

• “The JT65 Communications Protocol” (QEX, September-October 2005).

• “WSJT: Meteors, Moonbounce, and More.” (Mid-Atlantic States VHF Conference, September 2005)

• “Open Source WSJT: Status, Capabilities, and Future Evolution.” (12th International EME Conference, Wurzburg, August 2006)

• “Open Source WSJT.” (PowerPoint presentation)

• “How Many Bits are Copied in a JT65 Transmission?”(Dubus, 3/2006)

• “Recommended Procedures for Random Digital EME.” (Dubus, 3/2006)

• “MAP65: A Panoramic, Polarization-Matching Receiver for JT65.” (Microwave Update, October 2007)

• “Quest for Optimum Coding and Modulation Schemes for EME.” (13th International EME Conference, Florence, August 2008)

• Earth-Moon-Earth (EME) Communication (from ARRL Handbook, 2010)

• “Moonbounce from Arecibo Observatory” (QST, August 2010)

• “Frequency-Dependent Characteristics of the EME Path” (14th International EME Conference, Dallas, August 2010)

• “Frequency-Dependent Characteristics of the EME Path” (PowerPoint slides: 14th International EME Conference, Dallas, August 2010)

• “WSPRing Around the World” (QST, November 2010)

• “Meteor Scatter: How Much Antenna is Too Much?”, ARRL Antenna Book, 22nd Edition (2011)

• “MAP65 Version 2: A Panoramic, Polarization-Matching Receiver for JT65” (15th International EME Conference, Cambridge, August 2012)

• “MAP65 Version 2: A Panoramic, Polarization-Matching Receiver for JT65” (PowerPoint Slides: 15th International EME Conference, Cambridge, August 2012)

• “Small Station EME at 10 and 24 GHz: GPS Locking, Doppler Correction, and JT4” (Dubus, 2/2013).

• “Optimized Small-Station EME: X-pol at 432 MHz” (16th International EME Conference, Pleumeur-Bodou, France, August 2014)

• “Optimized Small-Station EME: X-pol at 432 MHz” (PowerPoint Slides: 16th International EME Conference, Pleumeur-Bodou, France, August 2014)

• “Moonbounce at W2PU”, (Mid-Atlantic States VHF Conference, September 2014).

• “EME with Adaptive Polarization at 432 MHz” (Dubus, 4/2014).

• “Open Source Soft-Decision Decoder for the JT65 (63,12) Reed-Solomon Code” (QEX, May/June 2016)

• “WSJT-X: New Codes, Modes, and Tools for Weak-Signal Communication” (PowerPoint Slides: 17th International EME Conference, Venice, August 2016)

• “High-Accuracy Prediction and Measurement of Lunar Echoes” (QEX, November-December 2016, pp. 36-40)

• “The MSK144 Protocol for Meteor-Scatter Communication” (QEX, September/October, 2017, pp. 8-14)

• “Work the World with WSJT-X, Part 1: Operating Capabilities”, (QST, October 2017, pp. 30-36)

• “Work the World with WSJT-X, Part 2: Codes, Modes, and Cooperative Software Development”, (QST, November 2017, pp. 34-39)

• “FT8 in the ARRL RTTY Roundup”, (QST, January 2019, p 29)

• “FT4 and FT8 Contesting”, (NCJ, May/June 2020)

• “The FT4 and FT8 Communication Protocols”, (QEX, July/August 2020. pp. 3-13)