Home of Butler County, Ohio VHF Association (BCVHFA)


 
Most Recent BCVHFA Announcement:

W 8 C C I - Our Amateur Radio Club Callsign and Providing Community Service Since 1958         http://goo.gl/GsIoK

Who we are:


Butler County VHF Association (BCVHFA) is a leading amateur radio (ham radio) association in Butler County, Ohio. The organization is located just north of Cincinnati near Hamilton, Ohio. BCVHFA is a non-profit 501(c)(3) organization, and has been serving our community with non-commercial communications during emergency conditions since the formation of our club in 1958. Members operate with a license granted by the Federal Communications Commission (FCC) and operate primarily under regulations contained in U.S. CFR Title 47, Part 97, "Amateur Radio Service." BCVHFA specializes in Very High Frequency (VHF) and Ultra High Frequency (UHF) radio technologies and participates in amateur radio activities using VHF and UHF equipment. High Frequency (HF) radio operation also complements VHF/UHF capability for extended range communications. Some members operate microwave amateur stations as well.

What we do:

  • Emergency communications support to local officials during emergencies after their communications have failed.
  • Meet to enjoy each others company and stories - Every Monday and the Monthly Main Meeting. 
  • Homebrew Equipment - Kit building, repeaters.
  • Club Upgrades -  4 operator club station, club generator, club operating accessories, club tower/antenna system.
  • Participate in weekly net on Thursday.
  • Contesting Lite - State Parks On the Air, Field Day, Lighthouse special events, several other contests that members request.
  • Training - Weather Spotting, Emergency Support, Club Equipment Operation.
  • Digital Communication - VHF/UHF Packet, HF Digital Modes, D-Star, Echolink.
  • Amateur radio computer applications - Raspberry Pi, Arduino.
  • Amateur Radio Software - Winlink2000, HF-ALE, FLDigi, G8BPQ, Ham Radio Deluxe, Linux
  • Amateur radio licensing - Assist non-hams acquire FCC amateur radio license.
  • New Licensee Mentoring - Help new ham radio licensees get started operating radios.
  • Seek new members for BCVHFA - We are always looking for good hams to become members of BCVHFA.

When we do it:


Main Meeting: First Wednesday of each month starting at 7:00 P.M.
Informal Monday Night Get Together: Each Monday at 6:00 P.M.

Where we do it:



Why we do it:


"Because We Can"  Radio Amateurs enjoy communicating with other amateurs both locally and all over the world; promoting international good will. Many have made friends for life through ham radio contacts. Radio amateurs enjoy constructing their radio station from store bought equipment and/or homebrew equipment sometimes advancing the "state of the radio art." 

How we do it:


BCVHFA amateur radio operators are licensed by the FCC. Each license upgrade allows the use of expanded radio frequencies. Potential ham operators must pass an exam showing they understand basic radio communication concepts and regulations before obtaining their license. Each operator can have a home "base" station as well as mobile and handheld radio stations. According to regulations, amateur radio operators can support community officials after a declared emergency when community owned radio systems fail to operate.


Link to Butler County Amateur Radio Communications (BCAREC) -  Click Here

eHam News

BCVHFA Announcements

  • BCVHFA Monthly Meeting May 7, 2014 at 7:00 pm The Monthly Meeting is held in room B109 on the first Wednesday of each month at 7 P.M.Use the same entrance door for both locations, as shown on ...
    Posted Apr 14, 2014, 8:05 AM by BC VHFA
  • BCVHFA Monthly Meeting April 2, 2014 at 7:00 pm The Monthly Meeting is held in room B109 on the first Wednesday of each month at 7 P.M.Use the same entrance door for both locations, as shown on ...
    Posted Apr 1, 2014, 2:44 PM by Greg Ham
  • BCVHFA Monthly Meeting March 5, 2014 at 7:00 pm The Monthly Meeting is held in room B109 on the first Wednesday of each month at 7 P.M.Use the same entrance door for both locations, as shown on ...
    Posted Feb 5, 2014, 8:18 PM by BC VHFA
  • BCVHFA Monthly Meeting Feb 5, 2014 at 7:00 pm The Monthly Meeting is held in room B109 on the first Wednesday of each month at 7 P.M.Use the same entrance door for both locations, as shown on ...
    Posted Feb 5, 2014, 11:02 AM by BC VHFA
  • January 2014 Meeting Cancelled January 2014 BCVHFA Meeting Cancelled due to weather. We will resume meetings February 2014 unless notified.Please be safe and have a Happy New Year !!!!
    Posted Jan 4, 2014, 2:30 PM by BC VHFA
Showing posts 1 - 5 of 11. View more »

 

DHS Terror Alert Level
 Click for Forecast for 45011 from weatherUSA.net
     

Propagation Conditions:


 
Clocks

LOCAL

UTC / ZULU



Range 1 (minor) to 5 (extreme)
 NOAA Scale  Past 24 Hours  Current
 Geomagnetic Storms
 Solar Radiation Storms
 Radio Blackouts
  • Geomagnetic storms: disturbances in the geomagnetic field caused by gusts in the solar wind that blows by Earth.
  • Solar radiation storms: elevated levels of radiation that occur when the numbers of energetic particles increase.
  • Radio blackouts: disturbances of the ionosphere caused by X-ray emissions from the Sun.
  • CLICK HERE for more Space Weather Predictions.
  • CLICK HERE for more information on the NOAA scales.


Solar X-rays:
 
Geomagnetic Field:
Status
Status
From n3kl.org


The chart below is a 7 day plot centered on today showing past 3 days and next 3 days.
Many thanks to NOAA/SWPC professionals for creating these static images which can greatly aid the amateur radio service!!
Radio Outage Warnings Timeline (Click this text to go to warnings timeline webpage for more detail):

 


The chart below contains alerts issued in the past 7 days, ending with today.
Many thanks to NOAA/SWPC professionals for creating these static images which can greatly aid the amateur radio service!!
 


NOAA Space Weather Scale for Radio Blackouts (Information):
http://www.swpc.noaa.gov/NOAAscales/index.html#RadioBlackouts



Latest X-Ray Image
Monitor the Sun’s X-rays for the early detection of solar flares, coronal mass ejections, and other phenomena that impact the geospace environment.



Solar Wind Dials
  • Magnetic Field Bz - Normally Zero. As Bz becomes more negative, the associated geomagnetic activity increases.
  • Speed - 400 km/sec (about 1 million mph) is the normal speed the Sun's corona gases stream out of the sun. Variations in speed buffet the Earth's magnetic field and can produce storms in the Earth's magnetosphere.
  • Dynamic Pressure - Normally 1. Indicator of the particle pressure the solar wind places on the sunward edge of the magnetosphere.


Northern Auroral


Planetary K Index
    Kp-indices of 5 or greater indicate storm level
    geomagnetic activity and can produce effects 
    to HF Radio, Satellite Comm, and the Electrical
    Power Grid.

 

The Sun with Force Lines
http://sdo.gsfc.nasa.gov/data/


Sun with Sunspots

 

 GOES X-ray Flux plot (5 minute data)
Large X-ray bursts cause short wave fades for HF propagation paths through the sunlit hemisphere.

 The sun has a magnetic field which the solar wind can carry throughout the solar system. This is called the Interplanetary Magnetic Field (IMF). Earth also has a magnetic field which forms a bubble around our planet. This is called the Magnetosphere. This bubble deflects the solar wind. Earth's magnetic field comes into contact with the sun's magnetic field in a place called the magnetopause.
The Earth's magnetic field points north. When the sun's magnetic field points south, also known as southward Bz, it may cancel Earth's magnetic field at point of contact. When the Bz is south the 2 fields link up. This basically opens up a door that may allow energy from the solar wind to reach Earth's atmosphere and lead to a geomagnetic storm.


The GOES Hp plot contains the 1-minute averaged parallel component of the magnetic field in nanoTeslas (nT), as measured at GOES-13 (W75) and GOES-15 (W89). The Hp component is perpendicular to the satellite orbit plane and Hp is essentially parallel to Earth's rotation axis. If these data drop to near zero, or less, when the satellite is on the dayside it may be due to a compression of Earth's magnetopause to within geosynchronous orbit, exposing satellites to negative and/or highly variable magnetic fields. On the nightside, a near zero, or less, value of the field indicates strong currents that are often associated with substorms and an intensification of currents in the Earth's geomagnetic tail.  Noon and midnight local time at the satellite are plotted as N and M. Default scaling is 0 to 200 nanoTesla. Non-default scaling to include infrequent extreme values is labeled in red to emphasize the change in scale.
   
Data courtesy: National Oceanic and Atmospheric Administration / Space Environment Center 






NVIS Optimum  HF Frequencies (foF2): Click Here For More Info

For communications within 300 kilometers - To use the map, locate the map for your location and click on it.  The color (frequency) at your location is the optimum frequency for F2 layer NVIS communication. Updated at 40 minutes past the hour.

These maps are made from data gathered in real time around the world using HF ionospheric radar systems called ionosondes. Ionosondes bounce HF radio signals off the ionosphere to measure the height of the reflective zones and signal strength vs frequency. The maps are generated using the ionosonde data to make projections based upon a base station working a mobile.


uptime




 

Meeting Status

BCVHFA
Subpages (1): DISCLAIMER