The ARRL Club News
ARRL Club News for September 2008
ARRL Club Newsletter
September 27, 2008
Norm Fusaro, W3IZ, Editor
IN THIS ISSUE:
+ NVIS For Your club
+ Club Commission Program
NVIS For Your club
Near Vertical Incidence Skywave (NVIS) is a propagation mode which
uses high angle radiation to send signals almost straight up to be
reflected back to Earth for very effective short to medium haul
communications. NVIS uses a no skip zone making reliable
communications effective for a range out to 500 miles. No special
equipment is required to create high angle radiation. The NVIS
propagation mode works on frequencies below 10 MHz because these high
angle radio waves are reflected back to Earth rather than absorbed by
the atmosphere as with higher frequencies. Often a low dipole is all
that is needed to accomplish reliable communications within the no
skip zone. Because of the reliability of communicating within this
range and no need for infrastructure or third party support such as
repeaters or satellites, NVIS is an excellent choice for emergency
communications and for staying in contact with friends in nearby
locations.
NVIS is an excellent topic for a club meeting and clubs can get extra
mileage from the NVIS topic by incorporating an antenna project and
on air activities among the members. The ARRL Multimedia Library has
several Power Point programs that can be used by your club for
meeting programs. These programs are free to download and use at <
www.arrl.org/multimedia >.
One of the programs in the library presents NVIS fundamentals, its
advantages and techniques on how to deploy NVIS in the field. Use
this program at your club meeting as a presentation and discussion of
the high angle propagation technique.
After members are knowledgeable about NVIS future meetings can
incorporate a hands on project where club members build antennas to
use for NVIS operation. The multimedia library has an marvelous
Power Point with a project for building a NVIS antenna for the 40, 60
and 80 meter amateur bands. This program is well illustrated, easy
to follow and uses readily available materials. Because the NVIS
technique is effective for short to medium distances club members can
gather on the air and compare signals and other aspects of NVIS.
With all of the recent tropical storms and hurricanes in the
Southeastern United States radio amateurs employed NVIS techniques to
get messages out of effected areas. The propagation mode works well
with SSB and with digital modes including Winlink 2000. Because
antennas for NVIS do not have to be mounted high, a complete antenna
package including coax and support poles and antenna can be packed
into a duffel bag ready to be deployed whenever and wherever needed.
If your club is looking for an informative and entertaining meeting
program that can be expanded to other activities then try Near
Vertical Incidence Skywave.
The club commission program allows ARRL Affiliated Clubs to retain a
portion of the ARRL dues from each new member or renewal that the
club submits.
Under the ARRL Club Commission Membership Recruitment Program, clubs
retain $15 for each NEW membership and $2 for each renewal submitted
(regular and senior memberships only). A NEW MEMBER is defined as any
individual who has never been a member of ARRL or any individual who
has not retained a membership for two or more calendar years prior to
the application submission.
The details and forms can be found on the web at the ARRL Club
Companion page:
http://www.arrl.org/FandES/field/club/benefits.html#commission
ARRL Affiliation Milestones for August 2008
25 Years September
*W4
TN Middle Tennessee DX Amateur Radio Club K4DXC
*W9
IL Metro DX Club W9TY
*W0
SD Mobridge Area Amateur Radio Club
50 Years September
*W4
GA Southeastern DX Club W4NT
TN Chattanooga Amateur Radio Club W4AM
*W8
OH Mount Vernon Amateur Radio Club K8EEN
*W6
LAX Antelope Valley Amateur Radio Club K6OX
=============================================================================
The ARRL Club News is published on the first Wednesday of each month by
the American Radio Relay League--The National Association For Amateur
Radio--225 Main St, Newington, CT 06111; tel 860-594-0200; fax
860-594-0259; www.arrl.org. Joel Harrison, W5ZN, President.
The ARRL Club News is an e-mail digest of news and information of
interest to active members of ARRL Affiliated Clubs.
Material from The ARRL Club News may be republished or reproduced in
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be given to The ARRL Club News and The American Radio Relay League.
Editorial questions or comments: Norm Fusaro, W3IZ, clubs@arrl.org
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Page last modified: 03:09 PM, 15 Nov 2006 ET
Page author: clubs@arrl.org
Copyright © 2006, American Radio Relay League, Inc. All Rights Reserved.
