Dear Rik, LF, I have made a short search in the internet, but all sources except one, even schools which have been named after Karl Ferdinand Braun and should know it, do not carry the addition "von"
Dear Stefan, the wire length of 25 cm of your active antenna corresponds very well to an antenna capacitance of about 2.7pF. The same capacity I have found as an optimum and used in the form of a "pc
Dear all, PA0A ufb aural reception in eastern Bavaria, JN68GN, on 502,4 kHz around 23.00 UTC. CW Signal up to 10 dB above noise level, in QSB still readable. 73 Ha-Jo, DJ1ZB
I would also recommend to increase the inductance of the 470uH power feed choke. I have built similar active aerials using operational amplifiers like OP27 or LT1252 (just 4 to 10 mA current consumpt
Dear Victor, as far as I know 132 kHz is a frequency used in the CENELEC band 3 kHz to 148,5 kHz for PLC services, according to the european Standard EN 50065, to cover distances up to 500 meters. In
Dear all, concerning the signal strength of the Alpha signals I have been given the following recommendation a few years ago: Those who can receive the russian Alpha signals in Europe will also be ab
Dear all, for the "Minimum Art Session" (MAS) pioneered by DJ7ST I have built a small two stage 80 m TX (3 watts output) which fits into the pocket of my trousers or jacket. If You can do the same wi
Dear all for input protection I am using one 1N4148 from gate to ground and another one from gate to the positive rail, both diodes in reverse polarity, independantly whether the device is a FET or a
Dear Lubos, sri, I thought You would answer in normal CW speed because my qth is eastern Bavaria, and I can hear your transmission by ear. But there had been qsb during your qrss transmission, and I
Milliwatt (mwh) or megawatts hours? 73 ha-Jo, DJ1ZB "Michael Probert" <[email protected]> schrieb: Extract from Daily Telegraph ( A leading UK newspaper ) Quote ?Green Taxes? ?Under the scheme a
Dear all, for the time being I have a special problem at my QTH for the reception of SAQ: Since a few months there is a new solar panel system in operation two houses from my qth in the same street.
Dear all, I guess on these frequencies they should be very careful not to break into the if of many radios receivers! Hopefully most people will listen on FM. HW? 73 DJ1ZB
Dear Peter, Your story is interesting also for me! In January 1958 the german freighter Heinrich Schulte/DCUW, on which I served as a radio operator, had been allowed to anchor at Christmas Island to
Dear Jay, thank You for asking Lars; therefore the reason should be different. Future attempts to receive SAQ at your location might give a better answer. I have a different problem with SAQ: The cho
Dear Jay, I remember that in the last christmas transmission it has been mentioned that SAQ has had the means to make repairs on their antenna variometers tuning the six downloads. Perhaps this may h
