From Dick, PA0SE The band 135.7 - 137.8 kHz was made available to Dutch amateurs in June 1998. Maximum allowed transmitter output is 400 W; only CW (A1A). My station is located at Leiderdorp, a town
Dr. OM, Both Harry, PA0LQ, and I, PA0SE, for reception of the 137 kHz band use a passive audio filter with a bandwidth of 35Hz, centered on 1000Hz. Harry designed it as a linear phase filter with fou
Dear Alan, you wrote: Do you want to see more of these?? Yes please! It is always interesting to us Dutchman to know how our signals compare to other ones from the continent. I write this also on beh
To All, Had a QSO with OZ1KMR at 1048 UTC today. Received RST329, sent RST589. He requested direct QSL. But I do not have his address. Can someone provide this? Thanks very much in advance! 73, Dick,
OZ1KMR Henrik Krab Solbjergvej 8 DK-6580 Vamdrup Dear Peter, Many thanks for your quick service! Harry, PA0LQ, also worked OZ1KMR and I will pass the address on to him as well. 73, Dick, PA0SE
To All from PA0SE Harry, PA0LQ, lives on the 12th (top) floor of an apartment building. When he wants to operate on LF he sticks out a fishing rod from his balcony and lets out some 35 m of antenna w
G3XDV de PA0SE Mike, One a similar topic, what influences the capacitance of a multi-wire top section? Is it simply wire diameter so a thick wire has more capacitance than a thin wire? What about mul
To All Harry, PA0LQ, has asked me to put the following message on the reflector on behalf of him: The manager of the apartment building I live in has just ordered me to stop my antenna experiments. S
IK1ODO de PA0SE I understand that your TX (if not you!) will go to Friedrichshafen. May you send a copy of the chapter to Friedrichshafen? I am very interested, even if my three-wire top hat seems t
Petr, There are about 7 layers. This is wrong. Loading coils should be wound in a single layer to keep the capacitance of the coil small. 73, Dick, PA0SE
To All You can measure field strength yourself when you have access to a selective level meter. Connect the meter to an untuned circular loop of one turn. When such a loop with a diameter of D meter
I really missed having Harry PA0LQ on the band. We had excellent contacts every weekend, sometimes every morning, and it was always re-assuring to hear Harry's strong signal and note with interest w
To All I have constructed a portable field strength meter for the 136 kHz band. This makes it possible to determine your radiated power. I have tried to send a description of the instrument via the R
Dear John, I visited the site and it looks really great! Text in white on black, wow.... Thanks again for a splendid job! 73, Dick, PA0SE --Oorspronkelijk bericht-- Van: [email protected] <WarmSpgs@ao
From PA0SE to All Dick's field strength meter looks interesting - well done Dick. Not sure whether it would detect much of my QRPP set up at 1km! The DVM I use with my FSM indicates voltages less tha
To All from PA0SE Using my homemade field strength meter I measured the signal of DCF39 at an open field near my location at 2.12 mV/m. (It almost doubles after dark!) Using a 1,34 diameter circular
To All As I am an amateur on matters of antennas and propagation I enlisted the help of Koos Fockens, PA0KDF, who is professionally involved. At my request Koos quoted the following definitions from
Dick, Only the professional versions of EZNEC (EZNEC-M and EZNEC/4) directly report the ground wave. However, a reasonable approximation of the ground wave field strength can be gotten by using the
