Saturday, December 18, 2010

Desk Top Mic

My wife and kids asked me what last minute idea I had from my wish list under 200 dollars. Right away, the vision of The Fin came to mind. So, with any luck, I might have a pretty cool stocking stuffer coming my way.

The Fin, exhibiting a remarkable, natural, clear sound and designed especially for live sound, recording and broadcast applications. The exceptional performance is achieved by the use of a special magnet structure with a large 1 1/18" aluminum low mass voice coil assembly similar to the Heil PR 20. The frequency response is 60 Hz - 18kHz with that traditional Heil Sound mid range 'bouquet' at 4kHz, which presents incredible brilliance and presence. The Fin exhibits a tight linear cardioid pattern. The chrome finish is a special 'showchrome' where the steel body is copper plated and then double chrome plated producing a deep chrome finish. A blue molded internal foam windscreen inside the grill covers the large diameter Heil dynamic microphone element mounted in a specially tooled Sorbothane c shock mount.

The fun part of The Fin is the four blue L.E.D. lamps mounted inside. These can only be illuminated when using The Fin into one of the 3 pin balanced XLR inputs of a professional mixing console that supplies a + 48 volt d.c. phantom voltage down the balanced mic line. A small slide switch on the bottom of The Fin must be switched to 'ON'.


The Fin, by Heil; click here
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My Stamp Collecting Blog

My Stamp Collecting Blog

Counter Added January 1, 2011

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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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