{"id":440,"date":"2022-02-05T22:46:44","date_gmt":"2022-02-05T22:46:44","guid":{"rendered":"http:\/\/m0aws.co.uk\/?p=440"},"modified":"2022-03-12T11:06:07","modified_gmt":"2022-03-12T11:06:07","slug":"simple-efhw-vertical-on-20m-works-great","status":"publish","type":"post","link":"https:\/\/m0aws.co.uk\/?p=440","title":{"rendered":"Simple EFHW vertical on 20m works great!"},"content":{"rendered":"\n

I completed the fine tuning of the 20m EFHW Vertical today, I got the SWR down to 1:1 at 14.10 Mhz. This gives me a perfect match for the CW and digital section of the band with the SSB part of the band not exceeding 1.4:1 at 14.350.<\/p>\n\n\n\n

I ended up removing 34.5cm of wire from the original antenna length to get the resonance where I wanted it. This was caused mainly by the extra inductance added into the circuit by the 49:1 Unun. This is to be expected and perfectly normal when feeding an antenna via an impedance matching transformer.<\/p>\n\n\n\n

I bolted the 49:1 Unun directly to the earth rod, this way it’s got a solid earth connected directly to it to keep the resistance to a minimum. (The metal mounting plate is also the earth termination point).<\/p>\n\n\n\n

\"\"
49:1 Unun mounted on earth rod directly<\/figcaption><\/figure>\n\n\n\n

I spent some time today chasing the DX on the 20m band using the FT8 digital mode.<\/p>\n\n\n\n

The fun started with VK2LAW<\/a> in Sydney Australia, followed by E25ETT<\/a> in Thailand, KP4CAR<\/a> in Puerto Rico, 9G5AR<\/a> in Accra Ghana and The Sahrawi Amateur Radio Club station S01WS<\/a> in Western Sahara. A nice mix of stations dotted around the world.<\/p>\n\n\n\n

\"\"
PSKReporter map showing all the stations that I heard on 20m today<\/figcaption><\/figure>\n\n\n\n

I like to keep an eye on the PSKReporter site whilst on air to see what I’m hearing. As you can see I heard stations from the West Coast USA right across to New South Wales in Australia and down south as far as Brazil. The 20m EFHW Vertical antenna and Yaesu FTDX10<\/a> radio combination really does have good ears<\/p>\n\n\n\n

As for being heard, well it’s a similar story, below is a map showing all the stations that heard me as reported on the PSKReporter website.<\/p>\n\n\n\n

\"\"
Stations that heard M0AWS on 20m FT8<\/figcaption><\/figure>\n\n\n\n

One again, great global coverage from the antenna and transceiver combo with only 20w being used for most contacts. (25w used to break some of the pileups!)<\/p>\n\n\n\n

Overall I’m really pleased with the performance of the antenna, for such a simple design it works exceedingly well. One huge advantage of a half wave over a quarter wave antenna is that the point of max current is 50% along the antenna’s length, on the 20m band EFHW Vertical this puts it some 5m above the ground lowering the angle of take off and making it a great DX antenna.<\/p>\n\n\n\n

If you’ve not got a lot of space but, want to work the DX on 20m then I highly recommend you give one a try, I’m sure you’ll be amazed at how well it performs.<\/p>\n\n\n\n

Can’t wait to get a 40m EFHW Inverted L up next!<\/p>\n\n\n\n

Information as to why it’s best to keep the feed point at ground level for this antenna is here<\/a>.<\/p>\n\n\n\n

More soon …<\/p>\n","protected":false},"excerpt":{"rendered":"

I completed the fine tuning of the 20m EFHW Vertical today, I got the SWR down to 1:1 at 14.10 Mhz. This gives me a perfect match for the CW and digital section of the band with the SSB part of the band not exceeding 1.4:1 at 14.350. I ended up removing 34.5cm of wire … <\/p>\n

Continue reading “Simple EFHW vertical on 20m works great!”<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[30,52,6,20,42,16,11,4,19,44,47,17,10],"tags":[],"class_list":["post-440","post","type-post","status-publish","format-standard","hentry","category-20m-band","category-491-unun","category-antenna","category-digitalmodes","category-dx","category-ft8","category-ftdx10","category-ham-radio","category-pskreporter","category-ukantennas","category-unun","category-weak-signals","category-yaesu"],"_links":{"self":[{"href":"https:\/\/m0aws.co.uk\/index.php?rest_route=\/wp\/v2\/posts\/440","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/m0aws.co.uk\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/m0aws.co.uk\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/m0aws.co.uk\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/m0aws.co.uk\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=440"}],"version-history":[{"count":16,"href":"https:\/\/m0aws.co.uk\/index.php?rest_route=\/wp\/v2\/posts\/440\/revisions"}],"predecessor-version":[{"id":603,"href":"https:\/\/m0aws.co.uk\/index.php?rest_route=\/wp\/v2\/posts\/440\/revisions\/603"}],"wp:attachment":[{"href":"https:\/\/m0aws.co.uk\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=440"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/m0aws.co.uk\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=440"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/m0aws.co.uk\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=440"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}