Hi Graham and the group, I use an SDR-IQ on VLF, LF, and HF (besides a Perseus on HF), and am quite satisfied with it. There are some occasional drop-outs in the data stream from the radio when the C
Running again. Signal strong enough for QRSS10, or at least 30 here. Cheers, Wolf . Am 02.10.2010 14:26, schrieb Markus Vester: Latest update at 12:25: Kite still up. But at 11:38 the generator ran
Stefan seems to have started now: http://www.iup.uni-heidelberg.de/schaefer_vlf/DK7FC_VLF_Grabber.html Unfortunately no RX here at the moment - the info came too late for me. 73, Wolf DL4YHF .
Hi Stefan, location ;-) No, not really stronger than the Alpha's. Because the resonant loop antenna has favourized 'your' frequency, and attenuated the HF stuff. The antenna itself is a slotted alumi
Hello Stefan, Good luck tomorrow - I hope to have the grabber running by then; at the moment I am fighting a battle with my E-MU 0202; after a firmware update from V4 to V8 it completely runs wild (u
Greetings all, I took the portable receiver up to the club station ("preparing for test"), and nice copy even with a 22 mHz FFT bandwidth. Markus: Is Stefan "standby" on 144 MHz in SSB, and do you ha
Hello group, Does anyone else see this strange "stepping signal" around 8904 Hz, or have an explanation what it is ? Nothing seen from Stefan here at the moment. UHF / SHF bands much busier ;-) Cheer
Sorry for having to post this to the group, but my PMs to Laurence keep bouncing with errors like "SMTP error from remote mail server after MAIL FROM:[email protected] SIZE=6299: host mx3.hotmail.c
Hello Uwe, I made an extremely simple 'driver unit' for a 4-coil stepper motor for a magnetic loop years ago. The 'driver' didn't contain any electronics at all : Just a homemade PCB with a central a
IIRC, the antennas at SAQ are just a small fraction of what they used to be. I think not all of the remaining masts there 'carry wires'. So the ERP may have been much larger back then in the early da
Hi Stefan, answering on 30m while beeing on the highway :-) Maybe, it's a Diesel engine, and the alternator properly low-pass filtered. I tried this years ago, and the QRM from the ignition coil, and
Hello Roger, Do you have an estimate about your transmitter's frequency stability (mHz per minute or similar) ? This would help to guesstimate a half-way matched FFT bin width, or -if you prefer- QRS
Hi Roger, I guess you're using one of the 'periodic actions' in spectrum lab with a command to save the jpg to a certain location (using the 'capture' command). Beware that each single backslash in t
Hi John and others, Confirmed... being member of various groups there: The delay is often much worse than here on the trusty old majordomo server. Sometimes the delay (at yahoo) can be in the range o
Hello Jurgen, Just a thought... try to switch the various attenuator settings (in the Perseus sdr control panel) in and out, and watch the amplitudes (magnitudes) of all those peaks. When stepping th
Greetings all, Not sure if this message by Paul Nicholson in Todmorden (UK) has already been 'relayed' here. New ODX for Austria on VLF ? ;-) Wolf schrieb: Quite a nice signal at Todmorden, range 125
Am 23.01.2011 14:06, schrieb Stefan Schäfer: Wow, Gary, The next VLF TX station it seems! Paul Nicholson is just some 30km distanced from you. I assume he is already involved in the tests? Yes..
Hello Ossi, Stefan, and all, Paul has post-processed his recorded data from Todmorden, UK, and posted this info on the VLF group ( http://tech.groups.yahoo.com/group/VLF_Group/message/16833 ). The re
Hello Gerhard, Ossi, and group, This info just arrived here from the yahoo VLF group, not sure if it was already forwarded to the LF group. 73, Wolf DL4YHF . -- OE3GHB's signal is a moving target! Th
