[LARC-CQ] Fwd: NVIS Test Update #2

Harmon Morgan wb4omg at frontier.com
Thu Mar 5 08:53:12 PST 2020



> Begin forwarded message:
> 
> From: Buddy Morgan <beamar at aol.com>
> Subject: Fwd: NVIS Test Update #2
> Date: March 5, 2020 at 11:49:54 AM EST
> To: wb4omg at frontier.com
> 
> 
> 
> 
> -----Original Message-----
> From: Larry Gispert <larry.gispert at verizon.net <mailto:larry.gispert at verizon.net>>
> To: *W4PXE <dave at xanderyachts.com <mailto:dave at xanderyachts.com>>; AA4ME - Home <seelyf at aol.com <mailto:seelyf at aol.com>>; Dee Turner (N4GD) <deet68 at verizon.net <mailto:deet68 at verizon.net>>; K4EZM - Home <payner1 at embarqmail.com <mailto:payner1 at embarqmail.com>>; KA9RIX - Home <matthew_bush1 at yahoo.com <mailto:matthew_bush1 at yahoo.com>>; KT4WX - Home <kt4wx at arrl.org <mailto:kt4wx at arrl.org>>; tarc <tarc at hamclub.org <mailto:tarc at hamclub.org>>; WB4OMG - Home <beamar at aol.com <mailto:beamar at aol.com>>; AA4MD - Home <aa4md at aol.com <mailto:aa4md at aol.com>>; AE4WK - Home <Wayne.Kocher at Yahoo.com <mailto:Wayne.Kocher at Yahoo.com>>; AK4O - Home <kj4ixi at yahoo.com <mailto:kj4ixi at yahoo.com>>; K4QXX - Home <K4QXX at arrl.net <mailto:K4QXX at arrl.net>>; K4WSB - Home <K4WSB at arrl.net <mailto:K4WSB at arrl.net>>; KA4WNZ - Home <ka4wnz at yahoo.com <mailto:ka4wnz at yahoo.com>>; KI4HHK - Home <KI4HHK at verizon.net <mailto:KI4HHK at verizon.net>>; KI4JMH - Home <duanefmartin at hotmail.com <mailto:duanefmartin at hotmail.com>>; KJ4QAL - Home <kjonesflorida at hotmail.com <mailto:kjonesflorida at hotmail.com>>; N4GI - Home <blake at n4gi.com <mailto:blake at n4gi.com>>; N4WEB - Work <wbode at att.com <mailto:wbode at att.com>>; N8ENJ - Home <radioguy73 at icloud.com <mailto:radioguy73 at icloud.com>>; NM5I - Home <noid1037 at gmail.com <mailto:noid1037 at gmail.com>>; NX4Y - Home <NX4Y at verizon.net <mailto:NX4Y at verizon.net>>; W4HY - Home <jperalta4 at verizon.net <mailto:jperalta4 at verizon.net>>; W4LT - Home <lromero56 at tampabay.rr.com <mailto:lromero56 at tampabay.rr.com>>; W4MI - Home <djconner at verizon.net <mailto:djconner at verizon.net>>; W4PG - Home <W4PG at arrl.net <mailto:W4PG at arrl.net>>; W4UOO - Home <mikesprenger at gmail.com <mailto:mikesprenger at gmail.com>>; W8RBJ - Home <W8RBJ at yahoo.com <mailto:W8RBJ at yahoo.com>>; WI9EMS - Home <spankymedic at hotmail.com <mailto:spankymedic at hotmail.com>>
> Sent: Thu, Mar 5, 2020 10:34 am
> Subject: NVIS Test Update #2
> 
> To all interested amateur radio operators in the WCF ARRL section:
>  
> The NVIS Test scheduled for Saturday March 7th at 0900 EDT (1400 UTC) is still a GO. The following information is pertinent to that test:
>  
> Location of the two primary test stations:
>  
> KR4X will be at the City of Tampa’s Picnic Island Park (southwest tip of the Interbay Peninsula)
>  
> AA4ME will be at a the Highland’s County Park on the North Shore of Lake Istokpoga (near Sebring)
>  
> Proposed frequencies of Operations (+ or – QRM)
>  
> 3.913    Mhz LSB
> 5.371.5 Mhz USB (CH-4)* 
> 7.282    Mhz LSB
>  
> *Note …. several HF transceivers have the 60 meter channels hard coded and are unable to be changed.  The frequency for CH-3 was changed in March of 2012 by the FCC. So that change necessitated our move to CH-4 as our designated 60 meter channel.
>  
> Part of the formula for choosing what amateur band to use for NVIS comms. is the current data on the maximum useable frequency (MUF) also known as the FoF2 frequency. The FoF2 frequency has been consistently running at 5 Mhz at the 1400 UTC time frame.  So this indicates we should use the 75 meter band to stay as a close but under the FoF2 frequency. We will open up the test on 3.913 Mhz with the ability to shift to 5.371.5 Mhz if necessary. We get the FoF2 data from the Australian Space Services website at http://www.swc.bom.gov.au/HF_Systems/6/5/1 <http://www.swc.bom.gov.au/HF_Systems/6/5/1>. The map is centered on 180 degrees of longitude.  Take note of the time in UTC on the top of the map and the color of the band over Florida which indicates the FoF2 as referenced on the right side of the map. You can move the time of the display by using the < or > buttons.
>  
> Please note that both AA4ME and KR4X will require 20 – 30 minutes of time to shift bands. My future plans are to have a deployable multi-band NVIS antenna for quick band changes.
>  
> Proposed Communications Plan:
>  
> 1.    At 0900 AA4ME and KR4X will attempt to establish radio communications on 3.913 Mhz LSB.
> 2.    If comms. are successfully established the two stations will test output levels of 100 watts, then 25 watts and finally on 5 watts.
> 3.    The differing wattages or necessary to establish the efficiency of the comms. link.
> 4.    Once the testing between AA4ME and KR4X is completed then AA4ME will put out a general call to all interested parties who want to actively participate.
> 5.    Depending on the number of other participants the testing period should take no longer than one hour putting the end of the test around the 1500 UTC hour mark. 
> 6.    AA4ME and KR4X will be putting together an “Observations Report” following the test.  Other participant’s comments and observations can be included in this report.  Please forward those comments to larry.gispert at verizon.net <mailto:larry.gispert at verizon.net> and they will be consolidated into the written report.
> 7.    The results (written report) of the test will be sent to this distribution list.
>  
>  
> Fred and I have been very interested in the potential use of NVIS Techniques in support of amateur radio’s disaster response role. We ran a series of tests back in the latter part of 2009 and earlier part of 2010.  This test is a continuation of that testing process. We will run future tests looking at other NVIS ideas and hope to get the support of the hams in the West Central Florida (WCF) ARRL Section. These tests enhance two of my personal primary interests in ham radio, one being setting up my station in the field (portable) and the other being emergency communications.  I hope that if you participate and/or just listen to these tests that you might become interested in helping us to further these amateur communications ideas.
>  
> de KR4X/Larry 73

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.lakelandarc.org/pipermail/cq-lakelandarc.org/attachments/20200305/25c26661/attachment.html>


More information about the CQ mailing list