NJDTechnologies

Radio: it's not just a hobby, it's a way of life

Typical Operating Schedule

Usually QRV CW most evenings, tuning between 472.5 kHz and 475 kHz with CQ's on or near 474.5 kHz. Occasionally QRV JT9, 474.2 kHz dial + 1000 - 1350 Hz. QRV some mornings starting around 1100z on CW. Sked requests are welcome. All activity is noise and WX permitting

“YOUR 630m BLOG BOOK”–2016 630m contributors’ posts compiled by Jim Hollander W5EST

– Posted in: Uncategorized

YOUR 630M BLOG BOOK

by James F. Hollander W5EST

TABLE OF CONTENTS

PART I: START BY RECEIVING 630m!

Chapter 1: Distinguishing Features of 630 Meters Compared to HF Bands

Chapter 2: Receiving Antennas for 630 Meters

Chapter 3: 630m Receivers and Decoders for 630m Modes

Chapter 4: 630m Local Noise, How to Minimize and Control It

Chapter 5: 630m Operating Modes and How to Receive Them

Chapter 6: 630m Storm Noise, How to Minimize and Receive Through It

Chapter 7: Common Darkness and 630m Nighttime and Daytime Paths

Chapter 8: 630m Spatial Diversity Reception and Screen Sharing

PART II: YOUR 630m TRANSMITTING STATION

Chapter 9: 630m Paths – Short and Medium

Chapter 10: 630m Transmit Antennas, Top Hats and Grounding Systems

Chapter 11: 630m Transmit Antenna Systems: Concepts, Modeling and Measuring

Chapter 12: 630m Transmit Antenna Tuning Units (ATUs) and Reliable Matching

Chapter 13: 630m Transmitters and RF Power Amplifiers

Chapter 14: Transmit/Receive (T/R) and Other Controls for Your Station

Chapter 15: 630m 24-Hour Daily Propagation Regimes and Annual Seasons

Chapter 16: 630m Station Operating Etiquette and Band Planning

PART III: 630m PROPAGATION, VARIABILITY, AND MYSTERIES

Chapter 17: 630m Propagation on Long Paths

Chapter 18: 630m Fading and QSB Measurements

Chapter 19: 630m during Daytime and during Solar Eclipses

Chapter 20: 630m Propagation Mysteries

Chapter 21: Analyzing and Interpreting 630m Information

Chapter 22: The 630m Future – Paths, Modes, Equipment, Propagation Itself

APPENDICES

Appendix I: 630m Station Profiles Blogged in 2016 & 630m Blog Puzzles!

Appendix II: Comparing 630m with LF and Other MF bands