Hello, Forwarded from Rik Strobbe: A software team from the Belgien amateur radio society UBA has developed a programme that can be used to register the fieldstrength measurements. All you need is a
Hello Regarding ground induction losses mentioned by Bob ZL2CA: The loop design programs RJELOOP1 and RJELOOP2, written by Reg / G4FGQ, both include induced ground loss when they compute the total lo
I found this link on the ndblist email reflector: http://www.fas.org/man/dod-101/navy/docs/scmp/part07.htm 137 kHz can be considered "microwaves" in comparison... 73 de Johan, SM6LKM
Hi dear Homebrewers & Lowfers! I got a Garmin GPS 12 receiver on my birthday which immediately resulted in wild plans to build a DGPS beacon receiver ;-) I want to try a phasing SSB receiver with abo
Hello all, Yesterday, around 2100 UTC, I heard a signal on 136.16 kHz that sounded like PSK31. I started the PSK31 program which immediately printed "CQ CQ CQ DE OH1TN OH1TN OH1TN". 73 Johan, SM6LKM
Hello All, SM6PXJ, SM0AOM and I are planning a 137 kHz dxpedition to the transmitting site in Karlsborg on Saturday November 27. We are going to use the old "T" antenna which is about 210 meters high
Hello, I have found out the hard way that the rectifier diodes in some power supplies can generate truly enormous amounts of harmonic hash at these frequencies. Not only on LF! Sometimes it is a prob
Hello All, We have got a special permission to radiate 1kW ERP (!) in the 135.7 - 137.8 kHz band during our "dxpedition" to Karlsborg on Saturday the 27:th of November. SM6PXJ, Christer, will bring h
Hello All, Bad news. Our 7S6SAJ dxpedition to Karlsborg has been cancelled because a key person suddenly became unable to participate. However, we will try to make a new attempt in a near future. Ple
Hello All, Bad news. Our 7S6SAJ dxpedition to Karlsborg has been cancelled because a key person suddenly became unable to participate. However, we will try to make a new attempt in a near future. Ple
Hi Mal, Can anyone explain to me why qrss is necessary on 136 khz. All the activity that I have heard on this frequency is workable on normal speed cw at my qth. And, the activity you didn't *hear* i
I agree with Steve. Besides, I suffer from astigmatism myself. Yes, there is a big difference between 1W ERP from a small garden antenna and 1W ERP from a 1000ft tower ;-) It's like comparing the per
Dear all, Christer, SM6PXJ, and I are going to make a new attempt to transmit from the retired giant "T" antenna (210 meters tall) in Karlsborg next weekend. We will try to get on the air in the afte
Hi boys, the efficiency of a 1/10 lambda ant over a good ground system could easily be over 50%. Yes, we know. That's the reason for using this antenna ;-) 73 de SM6LKM
Hello All, I believe I saw a QRSS signal on 71.805! It started at 20.45 UTC tonight, Monday, and lasted for about three minutes. It was not strong enough to be readable but quite close! Who was it? I
Hello All, I had the pleasure to work G3YXM crossband on 73 kHz / 80 m this morning. QRB 1122 km. I was really surprised by the good S/N ratio of Dave's signal. The practical limit is probably far be
Hello all, G4FGQ has written a new coil design program, solnoid2.exe. It seems to predict loss with better accuracy than solenoid.exe. http://www.btinternet.com/~g4fgq.regp/ http://www.btinternet.com
