unixwiz » uhf http://blogs.sungeek.net/unixwiz anything dealing with *NIX or what ever I want to write about Fri, 02 Jul 2010 02:28:16 +0000 en hourly 1 http://wordpress.org/?v=3.0 UHF antenna irony http://blogs.sungeek.net/unixwiz/2009/12/30/uhf-antenna-irony/ http://blogs.sungeek.net/unixwiz/2009/12/30/uhf-antenna-irony/#comments Wed, 30 Dec 2009 04:28:44 +0000 unixwiz http://blogs.sungeek.net/unixwiz/?p=1251 Why is it that every-time I make a new UHF antenna to see if it works, we have a good tropo DX available? Tonight I tried to make a UHF yagi antenna specifically for UHF51 (WTAE TV 4) since it is usually the one that had the most signal, even though I could not get it all the time. So I spent about an hour making the make-shift antenna, hooked it up to the amp and the converter box and instantly had about 75% signal strength on it in my dining room. I thought wow that is awesome. So I went and grabbed the little Radio Shack Yagi that I had (rated for about 40miles) and plugged it in, damn it, it works too for just that one channel. So the test will be tomorrow when the tropo effect goes away if my home-made one still works or not. If it does, I might try modifying it to get some of the other channels.

The yagi was made using calculations on this site: http://www.k7mem.com/Electronic_Notebook/antennas/yagi_vhf.html. Since I was making a “tuned” antenna, it was basically only for one frequency. To find the frequency, I used http://www.csgnetwork.com/tvfreqtable.html and used the bottom number for the channel (i.e. 692MHz for Channel 51).

Also to see when DX’ing might be good check out http://www.dxinfocentre.com/tropo.html

]]> http://blogs.sungeek.net/unixwiz/2009/12/30/uhf-antenna-irony/feed/ 0 How to make a … http://blogs.sungeek.net/unixwiz/2008/12/21/how-to-make-a/ http://blogs.sungeek.net/unixwiz/2008/12/21/how-to-make-a/#comments Mon, 22 Dec 2008 00:42:39 +0000 unixwiz http://blogs.sungeek.net/unixwiz/?p=998 Since I have some time off from work, I decided to make some antenna’s to try and get some local HDTV signals. Tonight I was looking for some UHF bowtie plans, so off to google and I started typing in “how to make a ” and this is what the auto search showed me.. Thought it was kind of interseting what showed up.picture-6

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