Thursday, April 18, 2013

RemoteQTH Server

This Open source project offers a solution to remote control of your Amateur radio station. Base for connecting other components and their remote control. The main advantage is low cost and adaptability (open source code).
Base for connecting other components on your remote station.

Main functions:

  • System is configured via web interface, with password protection.
  • Remote control are also possible with a smartphone.
  • Control up to 8 arduino (K3NG code) rotators modules.
  • Azimuth maps of rotators show actual grayline with position of the sun.
  • Web control for 8 relays.
  • Up to 8 temperature sensors.
  • Up to 2 A/D sensors with four voltage inputs.
  • LCD display shows actual IP adress and other informations.
  • One click server update.
  • Access without public IP addresses.
  • CW daemon - send cw from web interface, also listen on TCP port.
  • Export up to 8 serial ports to IP nework.
  • SSH access allows you to run applications directly on the server (Tucnak log).
  • QRcode generator for simply mobile acess.
  • Backup server configuration.
  • Based on RaspberryPI with consumption 2 watt only.
  • Any linux system possible.
download →

Hardware requirements:

  • Raspberry Pi single-board computer (or else linux compatible pc).
  • SD memory card (min 2GB).
  • Server main board.
  • Eight relay board.
  • Arduino rotor control with USB/UART converter (up to eight).
  • LCD display with I2C controller and 3.3/5V level converter.
  • I2C A/D converter with four voltage inputs (one or two).
  • I2C temperature sensor (up to eight).
  • USB/UART CW interface.
  • 5V power supply.
  • Power hub.
  • USB hub with external power supply.

How to order →


Explore web interface




Arduino Band decoder - independent module kit

Main functions:

  • Independent hardware.
  • Open code (by OK1CDJ) - you can modify.
  • Arduino mini module compatible.
  • Hardware input for:
    • Kenwood/Icom CAT.
    • Icom Band voltage output.
    • Yaesu BCD.
  • Optocoupler isolated output.
  • 5V power voltage.
  • Twelve open colector output.
  • Twelve LED diode indicated.
  • 70 x 80 mm PCB board.


More info at Remote QTH; Click Here
http://remoteqth.com/

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Saturday, April 13, 2013

STL-40 / STL40-PTT Lightweight Tactical Headset

Lightweight Tactical Headset
This lightweight tactical-style monitoring headset incorporates a flexible contoured ear hanger which can be easily adjusted for fit. Includes a quick-disconnect acoustic tube with multiple ear insert options and right or left ear compatibility. The swivel boom microphone adjusts for left or right positioning. Combine with a Sonetics SON231 Belt Pack for wireless system.

More info; Click Here
http://www.soneticscorp.com/products/stealth-headsets/stl-40-stl40-ptt-lightweight-tactical-headset/

Sonetics Communication Solution Home Page

http://www.soneticscorp.com/  

 

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My Stamp Collecting Blog

My Stamp Collecting Blog

Counter Added January 1, 2011

free counters

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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