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Total 7 documents matching your query.

1. [RFI] Handheld HF direction finder (score: 1): Author: Rich Hallman - N7TR <rich@n7tr.com>; Date: Sun, 18 May 2014 21:50:37 +0000; I need to track down a broadcast station mixing problem, and seem to be close to the source I think but unable to nail the location. Is there a direction finding solution others have used for 80 and; /archives//html/RFI/2014-05/msg00039.html (6,577 bytes)
2. Re: [RFI] Handheld HF direction finder (score: 1): Author: "Kenneth G. Gordon" <kgordon2006@frontier.com>; Date: Sun, 18 May 2014 18:13:36 -0500; Hello, Rich: Nice Collins and Drake setups you have on QRZ.com. When you say you are possibly "close" to the source, how close do you mean? The reason I ask is that if you are very close, you will ne; /archives//html/RFI/2014-05/msg00040.html (8,519 bytes)
3. Re: [RFI] Handheld HF direction finder (score: 1): Author: Rich Hallman - N7TR <rich@n7tr.com>; Date: Sun, 18 May 2014 22:19:19 +0000; On my ft-100 in the utv and a hustler 80 meter mobile vertical it's about 10 over near the source. Freq is 3900. But many other harmonics of the mix every 10 kHz, but 3900 is the loudest. I think I s; /archives//html/RFI/2014-05/msg00041.html (8,892 bytes)
4. Re: [RFI] Handheld HF direction finder (score: 1): Author: "Kenneth G. Gordon" <kgordon2006@frontier.com>; Date: Sun, 18 May 2014 18:37:20 -0500; OK. Then, IMHO, you will need an attenuator of some sort between the antenna and the receiver. I would suggest that you build one of Tom Thompson's 24" in diameter "link-coupled" loops, and tune it f; /archives//html/RFI/2014-05/msg00042.html (9,946 bytes)
5. Re: [RFI] Handheld HF direction finder (score: 1): Author: Joe - W7RKN <w7rkn.7@gmail.com>; Date: Sun, 18 May 2014 15:44:33 -0700; You've just got to get away from those three KOH towers!! <<GRIN>> Joe - W7RKN On my ft-100 in the utv and a hustler 80 meter mobile vertical it's about 10 over near the source. Freq is 3900. But man; /archives//html/RFI/2014-05/msg00043.html (9,805 bytes)
6. Re: [RFI] Handheld HF direction finder (score: 1): Author: "Ed K0iL" <eddieedwards@centurylink.net>; Date: Sun, 18 May 2014 17:51:01 -0500; You can build your own: http://tomthompson.com/radio/ReceivingLoop/loop.html The ARRL has several pages as well. Or buy commercial: http://www.nationalrf.com/type_hfdf_vector.htm http://www.ardf-r2.o; /archives//html/RFI/2014-05/msg00044.html (8,536 bytes)
7. Re: [RFI] Handheld HF direction finder (score: 1): Author: Jim Brown <jim@audiosystemsgroup.com>; Date: Mon, 19 May 2014 08:49:56 -0700; As others have suggested, use the null of a rotatable loop. But also consider the possibility that the mix is happening in one of the transmitters involved in the mix. That does sometimes happen. To; /archives//html/RFI/2014-05/msg00045.html (8,177 bytes)

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