Dear Ed, may be I tried to respond to RU6LAs calls in QRSs3. I tried it in saturday evening til 2300 UTC. Have seen good sigs with mm, with the spectrolab program.TNX report. My stn: TX 70W/60 Ohm, M
Dear Dick, spark gaps are a genuine way of measuring high voltages in a HV-Laboratory. There exist tables for DC and AC 50 Hz. Spark gaps must be used, as it is impossible to use a rotary swich in a
Dear Dick, it only can be DL2 HRE. 55, Hans-Albrecht DK 8 ND [email protected] schrieb am 27.03.05 14:14:40: Nice DC input of around 500Watt, and high antennacurrent over 1 amp. Really ope
Dear Lowfers, any ferrite core should have a gap. This is necessary to reduce the remanent flux from about 180 mT to as low as 30 mT. It may be just the residuous gap of lapped cores, preferrable is
Dear Mal, dear Group, transformers for flyback converters need a gap, transformers for forward converters do not have an gap. The gap of an flyback-transformer is about 1% of the magnetic path length
Dear Lowfers, my problem is: I ave a little break through at qrss operation in receive mode when driving my amplifier directy with 136 kHz signal out of the dds-VFO. It would be useful to use a feede
Dear Andre, thank You for the hint. In the meantime I hav found, that the IC 4017 has an aux-Bit output. For the figures o...4 it is log. H, for the figures 5...9 it is log. L. it may be that we can
[email protected] schrieb am 01.05.05 20:18:23: Hi all, I've been thinking about attending a ham show this year. Who among the LF crowd expects to be coming to Dayton? To Friedrichshafen?
Dear Lowfers, for a cw-shaping circuit with an op-amp (second order key-klick filter by Jim Moritz) I need an inverter for the negative supply of the op-amp. It is not possible to choose an dc/dc-con
German Longwave Activity Day of the DARC District Württemberg Dear OMs and LWLs, like in the last year, the DARC association Hohenstaufen P41 (DOK P41) is arranging the Longwave Activity Day of the D
Dear OMs; this year Our LW-Acty-day at 1./2. October was somewhat different to the previous years. Due to severe rain we erected the antenna near the plummers room in the farm , where we hade placed
Hello all, OM Rainer, DK 7 SU phoned me this afternoon, telling me that he had a qrss-qso with a german stn while he just wanted to check his qrss-prog. Who was it? Rainer used spectrolab for receivi
Dear Peter. If I was to put them into an overlapping bundle should the separate bars be a)in physical contact with each other No this is not necessary. The major gap is the distance from pole to pole
Dear JB, best for transformer constructons is Jerry Sevicks Book Transmission Line Transformers, W2FMI ARRL Publications. 1. The material o f deflection transformers for LF is a good choice. 2. Remov
Dear Victor, tnx for the fb qrss-report, according to your screenshot abt OO. Can You or any other stn respond to my calls? I got no Idea how sensitive my stn is now, and how much qrn is usual nowada
Dear Lowfers, I heard at my new QTH in Wendlingen a STN today at 137,70 kHz at 1231 utc in mode dfcw with report mm. Must have been a stn with nm call (DF6nm??) wkng a kl stn, named Franz. The other
Dear Victor my proposal for a radio contact is Sun 05.11.2006 09.00 UTC A1A qrss3. I will be qrv from abt. 08.30h at my stn. Or Friday 03.11.2006 21.00 UTC Today I had a disturbed contact to DK 7 SU,
Dear Victor, thank You for Your e-mail qsl. I still dont know, what is going wrong with my stn, I just receive blue screen noise with spectrum lab. Had a short qrss qso with DK 7 SU this morning. I a
Dear Lowfers, If the input windig is HIGH, the gate winding must be HIGH too. This is correctly in the schematic. To prevent self oscillation, the source winding must give negative feedback, i. e. a
Dear Marco, having a look on the specifications I noticed, that the receiver seems to have a wideband ssb-xtal filter in the receiver path. For all of us of interest: Is the X1M a stable VFO to be us
