Tuesday, January 15, 2013
Night of Nights 10
One day I might be half as good at sending CW~
Hat Tip to my Friend & Elmer, Bill (N8AM) for sharing this with me.
Video of 'DA', also known as Denice Stoops, the first female telegrapher who worked at KPH until the end of commercial morse operations and closure of the station in 1998.
Denice is seen here sending the closing transmissions of the MRHS (see them at www.radiomarine.org ) Night of Nights 10. Each year (in this case exactly 10 years) to the minute, that commercial morse operations ceased in the United States, former RCA shore station KPH comes alive to pay tribute to those who came before us to honor their skill and talents. Many other maritime shore stations and vessels join in, and thousands of people all over the world tune in each year to pay tribute, and copy the CW 'music' once again commanding the airwaves.
This video was shot in the control room at the KPH, KSM, KFS transmitter site and brought to a close Night of Nights X. The KPH 'wheel' is being sent in the beginning of the video before transmitter supervisor Steve Hawes 'pulls the plug' and connects DA's chrome Vibroplex bug to the panel to key all the transmitters at once. The whole building is electrified by the transmitters and the spirit of the men (and women) that were the only connection between those at sea and the world. It is an emotional experience to be part of such an event.
HOW TO READ PROPAGATION NUMBERS
The A index [ LOW is GOOD ]
- 1 to 6 is BEST
- 7 to 9 is OK
- 11 or more is BAD
Represents the overall geomagnetic condition of the ionosphere ("Ap" if averaged from the Kp-Index) (an average of the eight 3-hour K-Indices) ('A' referring to amplitude) over a given 24 hour period, ranging (linearly) typically from 1-100 but theoretically up to 400.
A lower A-Index generally suggests better propagation on the 10, 12, 15, 17, & 20 Meter Bands; a low & steady Ap-Index generally suggest good propagation on the 30, 40, 60, 80, & 160 Meter Bands.
SFI index [ HIGH is GOOD ]
- 70 NOT GOOD
- 80 GOOD
- 90 BETTER
- 100+ BEST
The measure of total radio emissions from the sun at 10.7cm (2800 MHz), on a scale of 60 (no sunspots) to 300, generally corresponding to the sunspot level, but being too low in energy to cause ionization, not related to the ionization level of the Ionosphere.
Higher Solar Flux generally suggests better propagation on the 10, 12, 15, 17, & 20 Meter Bands; Solar Flux rarely affects the 30, 40, 60, 80, & 160 Meter Bands.
K index [ LOW is GOOD ]
- 0 or 1 is BEST
- 2 is OK
- 3 or more is BAD
- 5 is VERY VERY BAD
The overall geomagnetic condition of the ionosphere ("Kp" if averaged over the planet) over the past 3 hours, measured by 13 magnetometers between 46 & 63 degrees of latitude, and ranging quasi-logarithmically from 0-9. Designed to detect solar particle radiation by its magnetic effect. A higher K-index generally means worse HF conditions.
A lower K-Index generally suggests better propagation on the 10, 12, 15, 17, & 20 Meter Bands; a low & steady Kp-Index generally suggest good propagation on the 30, 40, 60, 80, & 160 Meter Bands.
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