If you look at the weather map last evening there was a strong extra-tropical surface-250 mb low off the coast of New England. This winter storm system produced an upward propagating Internal Buoyanc
I heard 3B9C yesterday Monday evening UTC here in west Central Florida. He was 559 on my tee vertical and 579 on my low doublet. He peaked here at his local sunrise. The opening into our region from
I presume that most already have this online log website for 3B9C saved but just in case here it is. http://www.fsdxa.com/3b9c/online-logs.html . Last night I worked 3B9C on 3795/3790 kc phone and I
I had the usual local QRN on the 160 tee vertical and even the low doublet last night. Very frustrating, especially in light of not having room for listening antennas. In any event I listened for 3B9
I received MANY personal responses to my query concerning receiving antennas and their proximity to transmitting antennas. I received allot of valuable information and want to thank all who responded
True antipodal focusing of transmitted RF signals does occur at HF frequencies. BUT as Bob Brown NM7M pointed out in an earlier post the ionosphere at medium frequencies is to heterogeneous to suppor
It will certainly radiate and very efficiently BUT it will have a high takeoff angle of maximum radiation. I have a 160-10 meter horizontal doublet up at 40 feet and I flip a switch to make it a tee
Author: "Thomas F. Giella KN4LF" <kn4lf@earthlink.net>
Date: Mon, 12 Jan 2009 13:49:42 -0500
Carl K9LA is correct in his assertion that change in height of the ionosphere in the equatorial region during solar minimum does not translate to a change in the height of the mid and high latitude i
Author: "Thomas F. Giella NZ4O" <nz4o@verizon.net>
Date: Sat, 09 May 2009 14:21:51 -0500 (CDT)
My first solar cycle 24 prediction published at http://www.kn4lf.com/kn4lf72.htm on February 1, 2008 was for a solar cycle 24 peak at a (SSN) smoothed sunspot number of 105 in October 2012. My newest
Author: "Thomas F. Giella NZ4O" <nz4o@tampabay.rr.com>
Date: Wed, 22 Jul 2009 11:05:25 -0400
Around ten or so years ago K4TR and I did allot of experimenting with a long (3/8-1/2 wave) T vertical on 160 meters. We found that not did one not have to extend the radials further as the highest c
Author: "Thomas F. Giella NZ4O" <nz4o@tampabay.rr.com>
Date: Fri, 25 Sep 2009 15:19:10 -0400
The NZ4O Daily LF/MF/HF/6M Frequency Radiowave Propagation Forecast #2009-34 has been published on Friday 09/25/2009 at 0000 UTC, valid 0000 UTC Saturday 09/26/2009 through 2359 UTC Friday 10/02/2009
Author: "Thomas F. Giella NZ4O" <nz4o@tampabay.rr.com>
Date: Thu, 15 Oct 2009 20:22:19 -0400
The NZ4O Daily LF/MF/HF/6M Frequency Radiowave Propagation Forecast #2009-37 has been published on Thursday 10/15/2009 at 1800 UTC, valid 0000 UTC Saturday 10/17/2009 through 2359 UTC Friday 10/23/20
Author: "Thomas F. Giella NZ4O" <nz4o@tampabay.rr.com>
Date: Thu, 29 Oct 2009 08:10:30 -0400
I'm all for RTTY contests on 160 meters. CW and SSB contests occur on 160 meters so why not digital?! I've been a regular operator on 160 meters for 20 years and have watched the band go from crowded
Author: "Thomas F. Giella NZ4O" <nz4o@tampabay.rr.com>
Date: Sat, 31 Oct 2009 08:51:28 -0400
I live on a suburban city lot of just under 1/2 acre with a high QRN level. My transmit antenna is a 1/4 wave coaxial inverted L with a 40 foot vertical section. My receive antenna is an 8 foot diame
Author: "Thomas F. Giella NZ4O" <nz4o@tampabay.rr.com>
Date: Wed, 4 Nov 2009 09:04:01 -0500
I have experienced the tuner upper quite allot as of late. What get's me is that sometimes the tuner upper tries to work the DX that he is QRMing while tuning up. Another negative trend that I see mo
Author: "Thomas F. Giella NZ4O" <nz4o@tampabay.rr.com>
Date: Thu, 12 Nov 2009 09:57:21 -0500
Ed over the years I have experimented with 3/8-1/2 wave inverted L's/T's on 160 meters with success. I published a website about it at http://www.wcflunatall.com/nz4o9.htm . 73 & GUD DX, Thomas F. Gi
Author: "Thomas F. Giella NZ4O" <nz4o@tampabay.rr.com>
Date: Mon, 16 Nov 2009 20:10:52 -0500
Pete I have been using a coaxial receive loop on 160 meters since 2003. Between 1998-2003 I lived on three acres in the country with no powerline or any other local QRN. I was able to listen to DX on
Author: "Thomas F. Giella NZ4O" <nz4o@tampabay.rr.com>
Date: Sat, 5 Dec 2009 15:42:29 -0500
I've always used #12-14 stranded double covered house wire for ground radials as it's very durable. It held up well under frost heaving in Colorado. I put my first set of radials down using this type
Author: "Thomas F. Giella NZ4O" <nz4o@tampabay.rr.com>
Date: Thu, 10 Dec 2009 08:34:27 -0500
Posted Wednesday December 10, 2009 at http://www.wcflunatall.com/nz4o4.htm After sixteen days with no sunspot activity a new solar cycle 24 sunspot group has emerged in the NE quadrant of the sun nea
Author: "Thomas F. Giella NZ4O" <nz4o@tampabay.rr.com>
Date: Fri, 11 Dec 2009 09:07:02 -0500
The NZ4O Daily LF/MF/HF/6M Frequency Radiowave Propagation Forecast #2009-39 has been published on Friday 12/11/2009 at 1400 UTC, valid 0000 UTC Saturday 12/12/2009 through 2359 UTC Friday 12/18/2009