Hi Andy, Thank you for showing of IEEPaper. Yes, this is a variation of Hell system. But it's a different implementation. This unit is easy to be moved one place to another and use a DDS chip. Our sh
I am now testing a QRSS Grabber at the following URL: http://www1.u-netsurf.ne.jp/~7l1rll/radio.html Slow-Hell signal will be coupled on the screen sometimes. Frequency : 137767.5Hz through 137773.5H
Hi Mal, This results was not same district or near field, but 31 districts as shown multiplier factors. There are about 70 districts in Japan. He worked about a half of total Japan districs at 3.5MHz
To avoid misunderstanding each, may I suggest rename "Earth Antenna" to "Two Earth Electrodes Antenna"? JA5FP, a friend of mine, wrote a literature on so called "Earth Surface Antenna" at bellow URL,
Hi Tony and the others, Talking with JA5FP, Contest results using the two electrodes earth antenna were as follows: (1)JARL Field Day Contest: 3.5MHz, 86 QSOs, 31 multi. (2)KCJ Contest: 1.9MHz, 12 QS
Hi Tony, In addition to my previous introduction I forgot to say a moint : (3)There is a length dependency. The two electrodes earth anntena of 2 times long can be received 3 dB up. Confirm the above
HI Rik and Tony, It was no problem. I am simply confusing whether two electrodes (earth )antenna or one electrode as AC line antenna was experimeted. 7L1RLL Rick
Hi Laurence and the others GM signal was from JA1CGM. My grabber receceived both signals - JA1C GM was with fish bone in 70km distance and JA7NI was about 350km from here. 7L1RLL - Rick http://www1.u
Hi Tony, Thanks for the confirmation on directivity of the two electrodes earth antenna. The JA5FP's group said as follows: (1)Same directivity exists in a short distance. (2)Dried earth is good for
HI Tony, I will try to change my simple question now. Did you connect two wires and two earth rods [here after electrodes] such one electrode to antenna terminal and one electrode for receiver earth
Mal, JA5FP said that the length of two electrodes earth antenna were 30m for 3.5MHz, 60m for 1.9MHz. These length were selected by 0.8 of photo speed for the earth. There may be an outer circle (both
Hello Tony, Show us your RX earth terminal side and whether AC voltage supply or DC battery did you use for the experiment. AC line can be a good long antenna for receiving. 7L1RLL Rick
"The 2200m club of Japan" will demonstrate on a scientific view at the HAM Fair Tokyo 2010 will be held at Tokyo Exhibition Center (Nick-name is Tokyo Big Sights) on 22 August to 23 August 2010 (UTC+
Hi Roger, I will try to translate diagrams for your understanding. Figure 1: Typical configuration of Two Earth Electrodes Antenna. Earth A, Earth B and Transmitter and Receiver. Figure 2: Receiving
HI Tony, Thanks for your reply to me. But I'm not clear on your reply. The other LF-gay said two electorodes between xx meters, but you said only one electrode of the antenna side. My question is on
Hi Stefan, I's too fast to deside H field antenna rather than E field antenna. It is a phenomena that wet ground makes weak signal rather than dry ground with a same two electrodes earth antenna. Doe
Hi Roger, It's an interesting test using 20m spaced earth electrodes in wet soil condition. What do you think on the soil conductivity between two electrodes ? In any way I hope you will get many rep
Hi Tony, OK. We made a common understanding. I have heard that there is an orthogonal direction path between a wire antenna and earth antenna. This means that 90 degree each direction will get maximu
Alvarez, Scott and the others In addition to Scott I will add something as far as I know: A.136.000 kHz CW Beacon (20WPM) by JK1BQS for 24 hours. B.Around 136.500 kHz uses in CW QSO B.137.776 - 137.7
