To All from PA0SE Andy, G4JNT, wrote as a comment on GW4ALG's experiment using aluminum kitchen foil as a grouind screen under his loading coil: Aluminium kitchen foil is much thinner than the skin d
To All from PA0SE Further to the item I have recently sent, I have since realised that the suggestion of observing two ammeters may not show different peaking conditions, as the reactive current in t
To All from PA0SE Steve, GW4ALG, responded: As mentioned in my earlier posting, I was careful to check for system resonance before each measurement. How about you, Dick? The effect Andy mentions is i
To All from PA0SE When talking about the voltage on a certain point in a circuit it must be stated against which other point it is measured. When the loading coil is connected to earth at its bottom
To All from PA0SE A. I have modelled my aerial using Antenna Optimizer by K6STI. This also provides the current distribution on the aerial. The coil is modelled as a lumped inductance. As expected th
To All from PA0SE Spurred on by Steve, GW4ALG, I also measured the current above and below my aerial loading/tuning coil. The aerial is my multiband one for 10 - 160 m; consisting of a 2 x 20 m dipol
To All from PA0SE This picture comes from a 1929 price list. At that time one pound sterling was equivalent to about 12 Dutch guilders (). I hope the picture will be properly reflected. 73, Dick, PA0
To All from PA0SE Talking about holidays, i think it would be very interesting to have a decametric frequency to know in real time if somebody is cqing on 136khz, like the VHF NET on 14340 MHZ....WHY
To All from PA0SE Andy, G4JNT, wrote: Using the standard mean UK supply of 234V rms nominal (405V phase voltage, peak = 573V) the rectified supply would be 573 volts max, so my earlier statement that
To All from PA0SE A good strong signal from LX1PD this afternoon. This is the first time I have heard him. Heard Mike XDV calling him later, but with no success. If you are on the Reflector, please t
To All from PA0SE Well, I don't know what it is in English (couild not find it in a dictionary) but what your wife saw could have been what in Dutch is called a "bolbliksem". It is a rather rare phen
Dear Uwe and All, Many thanks for your message that supports my own view. Interesting that your father also advocated to leave the aerial floating. That surprises me a bit because German broadcast tr
To All from PA0SE I suppose a better idea would be to get into the habit of grounding the antenna when I leave the shack! When not in the shack I leave the aerial floating in the hope that it will be
Dear Walter, Many thanks for your reply. No, Peter is not living in Gosport anymore. Several years ago he moved to Cumbria. In the meantime Andy, G4JNT, has provided the e-mail address I asked for on
To All from PAoSE Andy, G4JNT wrote: Wait a minute ! I = SQR(W / R) so current in the loop = 51.2A and voltage at the feed is this current in the 60 ohms reactance, ie. 3077V Andy G4JNT --Original Me
To All from PA0SE Attached please find the electric component of the field produced by the 180 x 180 m vertical loop when 1kW is fed to it on 9kHz. 73, Dick, PA0SE GIF image
To All from PA0SE As suggested by Rik I have modelled by AO a square loop made of 15mm diameter copper tube. To make it more or less comparable to the 180m vertical I have given the loop sides of 180
