AmateurRadio.com

The retired W1SFR

For the past few days, our weather here on the East coast has been excellent nice warm weather (up to +10) with no rain and just great sunny skies. On the second day of this great weather, I decided it was time to put up my new Ultimax DXtreme EndFed antenna. The antenna I have at present is the W1SFR KX3 helper EndFed antenna.  As I have said past posts this is a fantastic antenna, very well built and works as advertised. So why am I replacing this antenna with yet another EndFed antenna, this is a very good question and was answered in this post.

Ultimax size difference

When I took the KX3 helper down I was pleasantly surprised how great the balun enclosure looked. It has been up for over 6 months exposed all kinds of weather and looked as new as the first day it went up. The first step to get the new antenna up was to install the counterpoise that I ordered with the Ultimax antenna. The configuration for my EndFed antenna is the Balun end is in a tree about 25 feet high with the wire extending down to my shed and is terminated about 8 feet above the ground. This is the same configuration I am going to use for the Ultimax antenna as well. The counterpoise from Ultimax antennas consists of a single wire for about 6 feet and then it splits into 2 separate wires. I used a staple gun to secure the counterpoise to the tree trunk.  The only choice I had was to place one counterpoise leg on one side of the tree trunk and the other one on the opposite side. The tree is only about 1.5 feet around so the counterpoise wires are not that far apart. At the bottom of the tree, each counterpoise goes along the ground in opposite directions for about 15 feet.
The Ultimax antenna is rated at 2KW SSB with 14 gauge wire along with a hefty insulator. Since my max output will be 100 watts CW and tops 80 watts DATA the insulator and wire on the Ultimax is a bit too heavy duty. Plus my support at the wire end is a wooden pole that is not meant for heavy-duty support.

Ultimax is up.

The idea was to use the wire from the W1SFR KX3 helper as so I thought at the time it was only 2 feet longer than the Ultimax antenna wire but very light. I folded over the wire to bring it down to 33 feet to match the Ultimax wire length and check the SWR on 80, 40, 30, 20 17 and 15m both with and without a counterpoise. The results show when using a counterpoise the SWR was not as good as without. I am guessing this is because of the position of the counterpoise, I was running out of time and not able to play too much with the counterpoise. We are expecting a very large snowstorm tomorrow so the antenna play is done for now. I am going to leave the antenna up without the counterpoise attached. BUT having said that the counterpoise is very easy to attach if need be.

Results without a counterpoise:
     Band              Freq           SWR

80.              4.000.        7.0
80.              3.500.        8.1
40.              7.001.        1.8
40.              7.070.        1.8
30.              10.100.     3.3
30.              10.150.     3.3
20.              14.001.     4.6
20.              14.070.     4.6
17.              18.068.     2.5
17.              18.168.     2.5
21.              21.001.     1.5
21.              21.070.     1.5

 
Results with a counterpoise:
         Band              Freq           SWR

80.              4.000.        6.5
80.              3.500.       9.1
40.              7.001.       5.2
40.              7.070.       5.2
30.              10.100.     2.2
30.              10.150.     2.2
20.              14.001.     4.9
20.              14.070.     4.9
17.              18.068.     2.7
17.              18.168.     2.6
21.              21.001.     1.6
21.              21.070.     1.5

Results from W1SFR EndFed:
         Band              Freq           SWR

40.              7.001.        1.9
40.              7.070.        2.5
30.              10.100.     4.4
30.              10.150.     4.5
20.              14.001.     4.5
20.              14.070.     4.3
17.              18.068.     1.5
17.              18.168.     1.5
21.              21.001.     1.8
21.              21.070.     1.8

   




Mike Weir, VE9KK, is a regular contributor to AmateurRadio.com and writes from New Brunswick, Canada. Contact him at [email protected].

A while back, several other Ham Radio YouTubers and myself started these collaboration videos and the feedback we have received on them has been very positive.  Thanks to all in the Ham Community who support our efforts.

In this 10th episode of our Collaboration efforts, we talk about the most reent CEO of the ARRL, Howard Michel, WB2ITX, and how his term was so short-lived.  I hope you enjoy the episode, feel free to comment below.

Jason Johnston, KC5HWB, is a regular contributor to AmateurRadio.com and writes from Texas, USA. Contact him at [email protected].

Hello and welcome to the 328th episode of Linux in the Ham Shack. In this Episode, the hosts interview Barry Buelow, W0IY, about his experience in engineering, circuit design, PCB design, schematics and the benefits of using the Open Sourcea tool KiCad for drawing, modeling and manufacturing hardware projects. Thanks for listening. We hope you find the information useful and entertaining.

73 de The LHS Crew

Russ Woodman, K5TUX, co-hosts the Linux in the Ham Shack podcast which is available for download in both MP3 and OGG audio format. Contact him at [email protected].

Many hams put up some pretty impressive antenna farms with large towers and big arrays. I have a small tower up at the cabin but it is quite puny (about 30 feet) compared to these more serious stations. I like to check out big antenna installations, especially the big commercial towers, as we travel around the country.

There are quite a few radio towers in the range of 2000 feet (~600 meters), as listed on this Wikipedia page.  At 2063 feet, the KVLY-TV mast in North Dakota is the tallest radio mast in the world. The WEAU tower in Wisconsin, listed as 2000 feet, collapsed in 2011 due to a winter ice storm.  Pete/WD4IXD recently pointed me to this video that describes how the tower was rebuilt within one year of the failure. Amazing story!

So you may think your antenna is big but it’s probably not 2000 feet tall.

73 Bob K0NR

The post So You Think You Have a Big Antenna appeared first on The KØNR Radio Site.

Bob Witte, KØNR, is a regular contributor to AmateurRadio.com and writes from Colorado, USA. Contact him at [email protected].

Here is this week’s space weather and geophysical report, issued 2020 Feb 24 0149 UTC.

Highlights of Solar and Geomagnetic Activity 17 – 23 February 2020

Solar activity was very low. No active regions with sunspots were observed and no apparent earth-directed CMEs were detected this period.

No proton events were observed at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit reached moderate levels on 17-19 Feb and high levels on 20-23 Feb.

Geomagnetic field activity reached active levels on 18 Feb and active to G1 (Minor) geomagnetic storm levels on 19 Feb. The enhanced geomagnetic field activity on 18-19 Feb were attributed to the passage of a transient solar wind feature. Active conditions were once again observed on 21 Feb due to negative polarity CH HSS influence. Generally quiet or quiet to unsettled conditions were observed throughout the remainder of the week.

Forecast of Solar and Geomagnetic Activity 24 February – 21 March 2020

Solar activity is expected to be very low throughout the outlook period.

No proton events are expected at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit is expected to reach high levels on 24 Feb-01 Mar, 05-09 Mar, and 19-21 Mar. Normal or normal to moderate levels are expected to prevail throughout the remainder of the outlook period.

Geomagnetic field activity is expected to reach active levels on 26 Feb, 04-05 Mar, and 19 Mar due to the infuences of multiple recurrent CH HSSs. Generally quiet or quiet to unsettled conditions are expected to prevail throughout the rest of the outlook period under a nominal solar wind regime.

Don’t forget to visit our live space weather and radio propagation web site, at: http://SunSpotWatch.com/

Live Aurora mapping is at http://aurora.sunspotwatch.com/

If you are on Twitter, please follow these two users: 1. https://Twitter.com/NW7US 2. https://Twitter.com/hfradiospacewx

– – – – – – – – – – – – –

Be sure to subscribe to our space weather and propagation email group, on Groups.io

https://groups.io/g/propagation-and-space-weather

Spread the word!

– – – – – – – – – – – – –

Links of interest:

+ Amazon space weather books: http://g.nw7us.us/fbssw-aSWSC
+ https://Twitter.com/NW7US
+ https://Twitter.com/hfradiospacewx

Space Weather and Ham Radio YouTube Channel News:

I am working on launching a YouTube channel overhaul, that includes series of videos about space weather, radio signal propagation, and more.

Additionally, I am working on improving the educational efforts via the email, Facebook, YouTube, Tumblr, and other activities.

You can help!

Please consider becoming a Patron of these space weather and radio communications services, beginning with the YouTube channel:

https://www.patreon.com/NW7US

The YouTube channel:
https://YouTube.com/NW7US

..

Visit, subscribe: NW7US Radio Communications and Propagation YouTube Channel

In my quest to improve my CW I wanted to add Morse Runner to my PC I am not sure where it went as I am sure it was on my PC. It may not have been reloaded one time I reformated my hard drive in the past. I returned to Alex VE3NEA site to download his Morse Runner program to my surprise I noticed on the site a link there is now a way to run Morse Runner on a Mac PC. This is great for me as I have a Mac laptop and I can now use Morse Runner. KI4STU has created a WineSkin wrapper to allow this great program to also work on a Mac PC. The only issue I have found is that my antivirus program Bitdefender is not allowing the INI file to be saved. Because of this, I have to load my call sign and the program parameters each time I run Morse Runner. I am sure I will find the workaround for this BUT it's great a WinSkin has been provided for this program.
Mike Weir, VE9KK, is a regular contributor to AmateurRadio.com and writes from New Brunswick, Canada. Contact him at [email protected].

It's time once again for The Weekender. This is our bi-weekly departure into the world of amateur radio contests, open source conventions, special events, listener challenges, hedonism and just plain fun. Thanks for listening and, if you happen to get a chance, feel free to call us or e-mail and send us some feedback. Tell us how we're doing. We'd love to hear from you.

73 de The LHS Crew

Russ Woodman, K5TUX, co-hosts the Linux in the Ham Shack podcast which is available for download in both MP3 and OGG audio format. Contact him at [email protected].