To All from PA0SE A few additional remarks about the info in my earlier massages are necessary. 1. I stated the field computation was based upon a radiated power of 1kW. That is not correct. The powe
To All from PA0SE Computer program Antenna Optimizer by K6STI permits to calculate the near field of an antenna up to a distance of 2km. I did so for a vertical for 9kHz. I had to make it 180m high b
Reg G4FGQ has just relased new version of the GRNDWAV software. Hopefully the factor 1.41 error is corrected now. Yes, it is. Dick, PA0SE http://www.btinternet.com/~g4fgq.regp/page2.html#S209 http://
To All from PA0SE This morning I started to listen on the 73kHz band at 0700 UTC. I heard Laurie, G3AQC at RST 569 and Jim, M0BMU at RST 559, both with CQ. Jim later announced he would QSY to 72kHz.
To All from PA0SE For comparison, would it be possible for you to make the same measurement and calculation for the GBR transmitter on 16 kHz? I happily comply. GBR on 16kHz is received here with a f
To All from PA0SE In a previous message I reported that SAQ generated a field strength of 572 microvolt/metre at my location. I tried to find the EIRP of SAQ using the propagation curves of CCIR reco
To All active on 73kHz Tuesday morning from about 0700 UTC onwards I will be listening on the 73kHz band and happy to make crossband QSO's. I will transmit on 136.55kHz. On what frequency and time sh
Dr. OM, In an one-turn untuned screened loop with an area of 1 square metre SAQ produced an EMF of 0.206 microvolt. That corresponds to a field strength of 572 microvolt/metre. Well done! The transmi
To All from PA0SE I believe there is an equivalent phrase in French beginning "Voyez le brick....." Can anyone complete this please ? For that matter is there a German equivalent, and Spanish etc.. I
Dear Uwe, Andy, G4JNT, already provided the answer in fundamental form. I use a simple rule that I can easily remember. At the small distance used for measuring field strength the ground constants do
To All from PA0SE Yesterday I have measured the field strength of my LF transmitter at a distance of 5.83km; more than enough to be outside the near field that would disturb the measurement. The loca
To All from PA0SE I have measured the field strength of some commercial LF stations in my shack, using the untuned single turn loop method. MSF 60 kHz 1.95mV/m Rugby 73.25 kHz 1.35mV/m DCF 77 77.5kHz
To All from PA0SE Jim, M0BMU, deserves great praise for his fine job of measuring field strength at a large number of locations and I certainly would like to receive the graphs he made. Thanks Jim in
To All from PA0SE I will not attend the Convention. The UK is becoming a bit too expensive for a retired Dutchman. Will there be a station on 136kHz? 73, Dick, PA0SE
To All from PA0SE I gave "O" three times in hand-sent morse code to make sure it was read correctly; just as it is usual to sent an RST report more than once. 73, Dick, PA0SE Hello group, it seems to
To All from PA0SE Dear OM, Of my loading coil about 1/5 is shortcircuited. Leaving it open makes no difference in aerial current. There could be some difference in coil losses of course but the effec
Dear John, Starting at 1500 UTC I got a clear reception of "CQ G4CNN" using Spectran V1. It was the first time in my life that I used Spectran so the adjustments may not have been optimum. I would ha
Consult "The low frequency Experimenter's Handbook", edited by Peter Dodd, G3LDO and sold by RSGB 73, Dick, PA0SE I presently have an 80m G5RV antenna and would like to get it to resonate on 136. Hei
