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Showing posts with label EFHW. Show all posts
Showing posts with label EFHW. Show all posts

31 July 2026

Portable Op 1 - Quinlan Park

 This morning I made my way out to Quinlan Park in Midwest City, OK. It was a hot windy day, we have been stuck in 100+ degrees for the clast couple of weeks. I loaded everything in my trike and hit the trails. I rode about 15 miles through out Midwest City just exploring before I settled on Quinlan Park, a small park that's hidden inside a neighborhood. I enjoy these hidden parks because they don't have as many people. My setup was pretty simple. The chosen transceiver was my Elecraft KX 3

The antenna that I used was a home brew 20 meter EFHW wire. I had it set up so that it was connected to the KX3 via 224 inch jumper. Then I had the middle of the wire supported by a cheap 24' telescoping fishing pole that I keep attached to my TerraTrike GT


In the above picture you can see the endpoint of the antenna. Its tied to the bright green rope. 

Using 5 watts on 20 meter  SSB, I was able to work three POTA stations. I was impressed because they had decent pileups. I was able to work US-12628 Sessions Woods Wildlife Management Area in CT and US-1391 Nockamixon State Park in PA

So that is this adventure, there are more planned down the line. It would make my week if you were to hit the subscribe button and follow along as I navigate this third rock. Feel free to leave any comments or questions that you have in the comments section below. You can also reach me by email at Aaron@K5ATG.com

13 June 2026

80-10 End-Fed Half Wave Antenna III

 I tightend up the slack that I had in my 80-10 Meter Lucky 7 Antenna. Here are the new SWR measurements:

Band Frequency SWR
80 3.573 MHz 2.0
40 4.074 MHz 2.0
30 10.136 MHz 3.0
20 14.074 MHz 1.4
17 18.100 MHz 3.0
15 21.074 MHz 1.4
12 24.915 MHz 2.0
10 28.074 MHz 5.8

The SWR measurements made a big increase but not quite where I want them. So I will just need to keep moving on. 

If you have any comments please leave them in the comments below. Or you could just email me at Aaron@K5ATG.com

Until mext time stay radio active. 

07 June 2026

80-10 End-Fed Half Wave Antenna II

 

Strung up my 80-10 End-Fed Half Wave Antenna. The feed point is a 20 foot tall flagpole right outside my bedroom window. Then it travels west to another mast. From there it goes to the North West cornet of the house. After that it goes South East to the shed. It is 135 feet long, here are the first set of SWR measurements:

Band Frequency SWR
80 3.573 MHz 3.0
40 4.074 MHz 2.6
30 10.136 MHz 5.8
20 14.074 MHz 5.8
17 18.100 MHz 1.9
15 21.074 MHz 1.3
12 24.915 MHz 2.6
10 28.074 MHz 5.8

I tried to set it for all of the FT8 frequencies cause that is where I spend most of my time.

Here is a Google Maps vire of my antenna


I'm calling this the Lucky 7 Antenna. As you can see I got that from that layout

That is all for now. If you have any comments please put them in the comment section below. 

05 June 2026

The time that I was a member of the Russian Ballot on Ice

 In 1990 the Russian Ballot On Ice were on a world tour and they were in Oklahoma City and suddenly their country no longer existed. The Sov...