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NVIS

Group Information

  • Members: 1432
  • Category: Shortwave
  • Founded: Mar 28, 1999
  • Language: English
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Activity within 7 days:

19 New Members - 1 New Message - New Questions

Description

NVIS is not a radio or antenna, it is a technique, and approved for all ages.

However you do not need a ham license or be on amateur, disaster, emergency or military frequencies, all with an interest in NVIS communications are welcome.

NVIS, Near Vertical Incidence Skywave HF radio wave techniques. Perfect for emergencies or to transmit and receive out to a 200 mile radius without a dead skip zone. A hilltop location or beam type antenna is not required. Vehicular operation is possible. We also discuss using low profile, invisible antennas and covert communication techniques.

Picture from http://www.vcars.org/tech/NVIS.html . This a copy of the U.S. Military NVIS antenna AS-2259 which was optimized for 6 MHz and 9 MHz. For Amateur 80M and 40M operation substitute 55.2' and 31', read the messages about this.

Please no attachments (could spread a virus), use only Plain TEXT (.txt or ASCII) for your messages, keeps the bandwidth down. HTML does not work either, so convert it to .txt and send it as TEXT.

Please allow 24 hours, or more, for your membership request to be personally approved or denied, this is to stop SPAM.

NVIS - Near Vertical Incident Skywave is the "Fake" NVIS group to catch the SPAMers and roBOTS from finding us.

Welcome to the "real" NVIS group.

Message History

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2009 17 51 208 25 44 29 172 306 110 160 147
2008 101 158 112 27 47 4 42 188 175 96 8 29
2007 213 172 62 97 29 17 176 33 75 117 151 137
2006 49 33 97 120 129 185 43 31 101 33 91 31
2005 37 127 33 57 72 41 145 112 81 90 130 44
2004 92 25 24 18 44 116 54 47 62 28 51 37
2003 49 9 43 53 53 37 23 18 20 19 16 7
2002 58 52 22 24 40 53 35 81 38 66 28 55
2001 26 51 14 10 26 62 36 45 14 23 65 44
2000 79 45 73 24 12 1 74 6 4 20 3 12
1999 9 2 1
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