Tuesday, September 28, 2010

Yaesu FT-8900

I have been asked several times by new and old hams, what is my favorite rig?
My answer is always my FT-8900.
Yes, it is a mobile rig yet it makes for a nice base station also. Mine is in the shack mounted just above my FT-897D.
The FT-8900 has many features that I enjoy such as the separation kit, dual receive, operating FM Satellites and Cross Band Repeat.
The Cross Band Repeat is helpful when I am rag-chewing while sitting around the fire pit in the back yard or in other areas of the house.
My HT is unable to make the trip to many distant stations, but it will receive them well, so I set up the cross band on the FT-8900, grab the HT and take my friends with me.
The other nice feature about the FT-8900 is that it is a Quad Band FM transceiver, able to work 70cm, 2m, 6m and 10 meter bands. If you hold only a Technician Licensee the great thing about this rig is you can operate on all bands.
Did I mention the Hyper Memory? Another great feature.

Check out the Yaesu FT-8900.
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My Stamp Collecting Blog

My Stamp Collecting Blog

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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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