[Yesterday: 6? miles]<\/p>\n
I’ve been working on various radio projects recently. I sometimes have a hard time finding the itch that I am trying to scratch.<\/p>\n
I have the nixie clock all laid out, and that appears to work just fine.\u00a0 I think I have a solution for the switch-bounce when setting the clock to the right time.\u00a0 I have put it on the shelf for a bit because I’m not sure a time clock is really what I want.\u00a0 I wanted to have something which would display UTC so that I would have it when I go to write down radio contacts in my log.\u00a0 (I do a lot of my operating in the early AM hours and usually by low light, so a lighted clock would be a good thing.)\u00a0 A further problem is that I need the date as well as the time.\u00a0 So, the nixie clock solves the time need but not the date need.\u00a0 I’m still using my goofy radio-clock which has a lighted display when I push the button.. and has the very aggravating DST adjustment problem which has messed me up twice a year for as long as I’ve owned the thing.\u00a0\u00a0\u00a0 So the nixie clock is on the shelf until I figure out what I want.<\/p>\n
I have built two signal sources recently, the one based on an AD9850 module and the other on the Si5351A.\u00a0 I messed around with input ideas to control frequency changing and I have more to do in that area.<\/p>\n
I’ve been thinking that I want to build a receiver, maybe an R2 or even an R1.\u00a0 But I’m not sure what my goal is:\u00a0 get on bands that I don’t currently have?<\/p>\n
Right now I have the headphones plugged into a Hi-Per-Mite audio amp\/filter which is lashed to a diode mixer which I yanked out of a VHF radio.\u00a0 The other side of the mixer is being fed by the Si5351A and the RF connection is to my antenna tuner.\u00a0 I hear signals on 40 meters.\u00a0 No volume control, no RF gain, no nothing.\u00a0 I just tune around.<\/p>\n
But then we get into the difficult parts: image rejection, filtering, amplification, user controls, T\/R switching.<\/p>\n
Frequently with my projects I have two problems:\u00a0 1 – I don’t have a goal and 2 – I get a ‘deer-in-the-headlights’ freeze trying to figure out what to start first.<\/p>\n
I think that is why I enjoy moderately difficult fix-it type projects. I assume that the thing I am fixing had a designer and a design and I don’t have to worry about comparing it with other designs or making design decisions.\u00a0 I just find the part that is broken and fix it.\u00a0 I currently have a 47″ LCD TV in the guest room with the back cover off.\u00a0 One of the circuit boards has a burned trace and a couple of missing components.\u00a0 I’ve ordered the components and I’m think I can get it working again.\u00a0 That would be gratifying.\u00a0 But don’t ask me to design a 47″ LCD TV, that would make my head hurt.<\/p>\n","protected":false},"excerpt":{"rendered":"
[Yesterday: 6? miles] I’ve been working on various radio projects recently. I sometimes have a hard time finding the itch that I am trying to scratch. I have the nixie clock all laid out, and that appears to work just fine.\u00a0 I think I have a solution for the switch-bounce when setting the clock to […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"class_list":["post-4597","post","type-post","status-publish","format-standard","hentry","category-ham-radio"],"_links":{"self":[{"href":"http:\/\/w0ep.us\/OM\/index.php?rest_route=\/wp\/v2\/posts\/4597","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/w0ep.us\/OM\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/w0ep.us\/OM\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/w0ep.us\/OM\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/w0ep.us\/OM\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=4597"}],"version-history":[{"count":1,"href":"http:\/\/w0ep.us\/OM\/index.php?rest_route=\/wp\/v2\/posts\/4597\/revisions"}],"predecessor-version":[{"id":4598,"href":"http:\/\/w0ep.us\/OM\/index.php?rest_route=\/wp\/v2\/posts\/4597\/revisions\/4598"}],"wp:attachment":[{"href":"http:\/\/w0ep.us\/OM\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=4597"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/w0ep.us\/OM\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=4597"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/w0ep.us\/OM\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=4597"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}