tag:blogger.com,1999:blog-35901825.post3157183402602323960..comments2024-03-19T06:03:40.451+10:00Comments on marxy's musing on technology: 80m receive loop antenna on a crochet hoopPeter Markshttp://www.blogger.com/profile/13007012724570360389noreply@blogger.comBlogger8125tag:blogger.com,1999:blog-35901825.post-78927708132887278742013-08-14T04:33:05.886+10:002013-08-14T04:33:05.886+10:00There are many store brought antennas that have th...There are many store brought antennas that have the capacity to pick up just a few channels. You will just need to do some adjustments or create a custom made one like this for maximum signal strength.Emi Samhttp://sydneyantennas.com.au/noreply@blogger.comtag:blogger.com,1999:blog-35901825.post-12201695864791227772012-01-05T06:14:13.455+10:002012-01-05T06:14:13.455+10:00This item is about an antenna for a very low frequ...This item is about an antenna for a very low frequency, 3.5MHz, a TV antenna is meant for a much higher frequency such as 70MHz.<br /><br />I have seen indoor TV antennas with a small loop but I'm not sure if it really works of if it's for show. My feeling is that the best improvement for you would be to install an external TV antenna up higher and pointing to the stations you are trying Peter Markshttps://www.blogger.com/profile/13007012724570360389noreply@blogger.comtag:blogger.com,1999:blog-35901825.post-29682393456129270912012-01-05T00:58:38.977+10:002012-01-05T00:58:38.977+10:00I'm planning to make a tv antenna the one I bo...I'm planning to make a tv antenna the one I bought (with loop) only picks up 2 bearable channels, the others are completely nothing, do you think i would benefit considerably from a signal amplifier, since i live near one radio station about 3 kilometers from here, thant's the only channel with clear signal. <br /><br />Anyway, Nice Antenna.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-35901825.post-10617761674266430922012-01-05T00:57:23.309+10:002012-01-05T00:57:23.309+10:00I'm planning to make a tv antenna the one I bo...I'm planning to make a tv antenna the one I bought (with loop) only picks up 2 bearable channels, the others are completely nothing, do you think i would benefit considerably from a signal amplifier, since i live near one radio station about 3 kilometers from here, thant's the only channel with clear signal. <br /><br />Anyway Nice Antenna.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-35901825.post-78254412991680886422010-04-08T12:41:51.855+10:002010-04-08T12:41:51.855+10:00A great looking loop, well done and thanks!A great looking loop, well done and thanks!Peter Markshttps://www.blogger.com/profile/13007012724570360389noreply@blogger.comtag:blogger.com,1999:blog-35901825.post-62283514494295548582010-04-08T12:39:51.798+10:002010-04-08T12:39:51.798+10:00http://amfone.net/Amforum/index.php?action=dlattac...http://amfone.net/Amforum/index.php?action=dlattach;topic=22919.0;attach=17189;imagew1gfhhttp://amfone.net/Amforum/index.php?action=dlattach%3Btopic%3D22919.0%3Battach%3D17189%3Bimagenoreply@blogger.comtag:blogger.com,1999:blog-35901825.post-8687848636159339052009-01-27T05:55:00.000+10:002009-01-27T05:55:00.000+10:00Dear Anonymous,Yes, you're right a variable capaci...Dear Anonymous,<BR/><BR/>Yes, you're right a variable capacitor isn't needed in the loop to the receiver. The purpose of that capacitor is to avoid heavily loading the pickup loop.<BR/><BR/>No, I wasn't able to tune down to 160m. <BR/><BR/>I saw a large loop by VK2ASU that had switchable turns which allow more coverage, that might be a good next step.<BR/><BR/>Yes, Alan VK2ZAY is using a bicycle Peter Markshttps://www.blogger.com/profile/13007012724570360389noreply@blogger.comtag:blogger.com,1999:blog-35901825.post-12969297648010359972009-01-26T19:41:00.000+10:002009-01-26T19:41:00.000+10:00Hi,A very interesting and enlightening post. Just ...Hi,<BR/><BR/>A very interesting and enlightening post. Just a couple of queries:<BR/><BR/>- the schematic sketch shows a *variable* capacitor in series with the pickup (secondary) loop - should it be the *fixed* 0.01uF ceramic shown in the photograph?<BR/><BR/>- what's the purpose of the 0.01uF cap, anyway?<BR/><BR/>- the polyvaricon variable capacitors from Dick Smith, etc., have a range of onlyAnonymousnoreply@blogger.com