{"id":7175,"date":"2020-07-14T13:32:00","date_gmt":"2020-07-14T03:32:00","guid":{"rendered":"https:\/\/www.homebrewradio.us\/blog\/2020\/07\/14\/on6uus-db4020-ea3gcy-rig\/"},"modified":"2025-07-21T22:29:38","modified_gmt":"2025-07-21T12:29:38","slug":"on6uus-db4020-ea3gcy-rig","status":"publish","type":"post","link":"https:\/\/www.homebrewradio.us\/blog\/2020\/07\/14\/on6uus-db4020-ea3gcy-rig\/","title":{"rendered":"ON6UU’s DB4020 EA3GCY Rig"},"content":{"rendered":"
<\/a><\/div>\n
<\/div>\n
Hi,<\/b><\/div>\n
<\/div>\n
Recently I got the EA3GCY newsletter, it announced a new kit DB4020, a 2 band transceiver kit covering 40 and 20 mtrs. I know Javier EA3GCY\u2019s kit are good so I ordered one. A week later it arrived in a brown enveloppe in which I found all components and printboard wrapped in bubblewrap, it was all well packed and after checking all components all was accounted for, all components were indeed there.<\/b><\/div>\n

<\/b><\/div>\n
8 toroids have to be wound, following the instructions it was piece of cake, no problem, <\/b><\/div>\n

<\/b><\/div>\n
After several hours of work – relax max style – I got everything in place to test, hurray, no smoke !!!! So now the SSB part was ready, I have 7W on 40 and 3.5W on 20mtr. Good power for qrp sota, wff or just garden activity. A fortnight later I got notice that the CW part of the kit was ready and another week later it arrived here, I soldered the 2 boards as soon as possible to get a multimode 2 band transceiver. The 2 boards are the CW interface which also holds the KB-2 keyer, the second board is the 500-600HZ CW filter. The KB-2 give the user 4 memories, beacon function and some more functions. Good thinking to include the keyer, it makes life easy when you\u2019re on an activation. \ud83d\ude0a<\/span> I opted to make the filter switchable, I like to be able to listen broadband too, very simple, cut one leg of the 13 pin connector on the bottom of the CW interface and put a switch on both ends.<\/b><\/div>\n
<\/div>\n
<\/a><\/div>\n
<\/div>\n
After some figgling around I also got the box ready, a military grade plastic box with wall thickness of 5 mm, this box should be able to withstand a lot of shocks and a drop to the ground. I also made a docking station for a laptop battery which holds some 5Ah and which should be able to give me a lot of hours of listening and some 2 to 3 hours of operation. I had an old laptop which the screen was broken and had some other malfunctions, I have taken the battery connector out of it, luckily I still have another laptop which still works and this is the charging station for the batteries \u2026. .. \ud83d\ude0a<\/span> The docking is only to test, I will box it up in maybe a some box where I can then maybe also fit a end fed solution or tuner for coax fed antennas.<\/b><\/div>\n
<\/div>\n
<\/a><\/div>\n
<\/div>\n

<\/b><\/div>\n
A new radio also needs a new CW key so I made one out of an old relay, painted the base green to fit somewhat the box et voila, here is the result of the complete portable station.<\/b><\/div>\n
<\/div>\n
<\/a><\/div>\n
<\/div>\n
<\/div>\n
<\/div>\n
The key can be fitted to the box by means of a bolt and a wingnut. A short cable goes to the CW connector of the transceiver.<\/b><\/div>\n

<\/b><\/div>\n
I had a lot of fun constructing this kit, the box, the docking and the key. For 180\u20ac you get a arduino nano controlled CW\/SSB transceiver with 2 bands on which most of the activity is and you also get a keyer with memories. Good deal I think. More info is available on EA3GCY\u2019s website. Javier is also very quick in responding to questions, he ask for opinions and offers almost an Elecraft style of service.<\/b><\/div>\n
<\/div>\n
I made some video\u2019s which are on youtube :<\/b><\/div>\n
https:\/\/www.youtube.com\/watch?v=Y9sUbyAlF00&t=12s<\/b><\/span><\/a><\/div>\n
https:\/\/www.youtube.com\/watch?v=hGDwLdkr3HU<\/b><\/span><\/a><\/div>\n
https:\/\/www.youtube.com\/watch?v=ZiMnpfte4cI&t=35s<\/b><\/span><\/a><\/div>\n
https:\/\/www.youtube.com\/watch?v=oLYIgVv7So8&t=130s<\/b><\/span><\/a><\/div>\n
<\/div>\n
The kitters website :<\/b><\/div>\n
https:\/\/www.qrphamradiokits.com\/<\/b><\/span><\/a><\/div>\n
https:\/\/www.qrphamradiokits.com\/transceivers\/db4020-dual-band\/#cc-m-product-12710260049<\/b><\/span><\/a><\/div>\n
<\/div>\n
Best 73<\/b><\/div>\n
Frank<\/b><\/div>\n
ON6UU<\/b><\/div>\n
<\/div>\n
<\/a><\/div>\n

<\/p>\n

<\/div>\n
<\/div>\n","protected":false},"excerpt":{"rendered":"

Hi, Recently I got the EA3GCY newsletter, it announced a new kit DB4020, a 2 band transceiver kit covering 40 and 20 mtrs. I know Javier EA3GCY\u2019s kit are good so I ordered one. A week later it arrived in a brown enveloppe in which I found all components and printboard wrapped in bubblewrap, it … Continue reading “ON6UU’s DB4020 EA3GCY Rig”<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":7176,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[348,116,105,253,23],"tags":[],"class_list":["post-7175","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-belgium","category-cw","category-kits","category-spain","category-ssb"],"_links":{"self":[{"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/posts\/7175","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/comments?post=7175"}],"version-history":[{"count":1,"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/posts\/7175\/revisions"}],"predecessor-version":[{"id":7181,"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/posts\/7175\/revisions\/7181"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/media\/7176"}],"wp:attachment":[{"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/media?parent=7175"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/categories?post=7175"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/tags?post=7175"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}