To All from PA0SE At 1737 UTC I heard and worked G3WSC/P with Derek, G3GRO at the key. Their signal was -70 dBm (S9 + 3dB) at the receiver input. The corresponding field strength is 32 microvolt/mete
To All from PA0SE I only could monitor transmissions from the ex-Decca station today, Sunday April 16. The result is: Time (UTC) Call Freq ERP Iant S-report Fieldstrength 1000 G3WSC/P 136kHz 50W 9A S
To All from PA0SE This is an addition to my report of Sunday April 16, 22.13, here repeated. The shape of a vertical aerial has a lot of influence on the reactive part of the impedance at the feedpoi
To All from PA0SE, Many thanks to Walter Blanchard for the interesting info on the Puckeridge Decca station aerial. four booms were taken off altogether and the 3750 pf capacitance restored by runnin
To All from PA0SE This is certainly not naive Laurie. I understand that in the LF aeronautical non directional beacons and ILS locators in our country such a series resistor is indeed included to avo
To All from PA0SE Greetings All: I uncovered two ancient RF Thermo Couple Meters this evening, I had put them away some years ago in anticipation that at some point I might want to measure RF amps. T
To All from PA0SE On my question about the proper way of writing units in English/American I received the following reply from the Editor of RadCom. 73, Dick, PA0SE Hello, Dick. It is RadCom style to
To All from PA0SE 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://
To All from PA0SE Narrow bandwidth filters do not have to ring provided they are of the phase-linear type (constant group delay in the passband). I use a home made passive phase-linear filter with a
Could you post a brief text summary of your design? 73, Bob ZL2CA PA0LQ filter descriptions: http://www.alg.demon.co.uk/radio/136/af_filter.htm http://home5.swipnet.se/~w-54761/pa0lq_filter.htm 73 C
To All from PA0SE At 0955 today I worked Jim, M0BMU/P at the Puckeridge station. On the Decca antenna his signal was exactly S8; corresponding to a field strength of 8.6 microvolt/metre. On the "amat
To All from PA0SE In an e-mail to Bob, ZL2CA. discussing the PA0LQ audio filters, I mentioned a thesis on the reading of morse code signals in noise. As a result Bob asked: Do you know a way of acces
To All from PA0SE On April 16 2000 at 1000 UTC I received G3WSC/P at Puckeridge at S9 + 20 dB. That means an input to the receiver of -73dBm + 20dB = -53dBm. Today, May 20 2000, I received M0BMU/P at
To All from PA0SE In an e-mail to Bob, ZL2CA. discussing the PA0LQ audio filters, I mentioned a thesis on the reading of morse code signals in noise. As a result Bob asked: Do you know a way of acces
From PA0SE Dick and all. Very puzzling! I worked Jim straight after you and found exactly the opposite..... 4dB better on the "small" antenna. We tried the test twice and I continued to listen, each
To All from PA0SE In QST of April 2000 you find the following article: Jay Kolinsky, NE2Q: "NE2Q's Antenna Fell From the Sky!" The article describes the construction of a kite of the "Scott Sled" des
To All from PA0SE 3. On the subject of receive notes. I also noted that Harry optimises his filter for 1kHz. Many operators including myself prefer a lower note, 600-800Hz or even lower. I suspect it
To All from PA0SE Has anyone experimented with phase shifted / delayed audio, i.e. with "raw" audio fed to one half of the headphones and a (variably) phase-shifted / delayed version fed to the other
To All from PA0SE Walter Blanchard quoted the RACAL expert who has in the past designed the Decca antennas as follows: (...) If the small one has an assymetric horizontal component (flat-top) this wi
To All from PA0SE over Mike Powell commented: And yet did not Marconi use a vertical antenna with a long horizontal wire to obtain directivity from Cape Race? When the original aerials came down in a
