Saturday, September 29, 2012

KATSUMI EK-160 Electronic Keyer / Paddle


The EK160  Electronic Keyer / Paddle is a commercial grade electronic keyer with a precision dual paddle built in.

Terminals are provided for connecting a paddle and/or bug or straight key (to use the keyer as an oscillator and to buffer the keying of a transmitter via the relay).  The keyer itself will function in "bug" (semi-automatic) mode at the flip of the front panel switch.

Speed setting is done via a front-panel control which is calibrated in characters per minute (5cpm = 1wpm, approximately ).

The adjustable paddles are switch - reversable for left-handed operators, and the contact spacing is easily adjusted on the front panel.   Iambic keying features full dot and dash memories. The weighting ("code ratio" can be adjusted from 1:3 to about 1:4.  There's a built in monitor with volume control on the front panel and pitch control on the back,  and a jack for headphones or external speaker (8 Ohms, 300mW).

Built-in high-speed reed relay supports negative-keyed rigs  with up to 280VDC and 2A on the key line, or use JFET keying for transistor-keyed +V rigs and save wear and tear on the relay..

Specifications:
Speed range: 6-50wp,
Keying circuit:  reed relay or JFET
Power Source:  110VAC  o r 220VAC
Size/Weight:  9x4x2.5in,  2 Lbs,  12 Oz.

for Link; Click Here
http://www.mtechnologies.com/katsumi/

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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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