NOTES ON PC VIRUS PROTECTION PC viruses are a damn nuisance. Virus protection software is highly recommended, but it still has an archilles heal if a new virus appears (with code not recognised by an
John G4CNN, Regarding your comments: One thing has become very clear, this sort of experiment requires good preparation, and a familiarity with the very small bit of the band that one is monitoring,
Dexter W4DEX, Thanks for your efforts to receive ZL6QH on LF. We will have to work out the path length. For general information to all listensers, I can say that all went well at ZL6QH from a transmi
Happy New Year, I believe that Markus, DF6NM has made some salient points: ...... The question for our weak-signal work is not so much how to decrease the error rate of a strong signal, but rather wh
Hi all, ZL6QH will be on for a beacon transmission in the 136 kHz band, including the period 0500 to 1900 UTC on 22 March. This includes the overnight period in ZL, which is Saturday night till Sunda
John, One thing that has worried me with multistrand wire is whether there can be arcing or intermod if one conductor in the bundle has a break in continuity. This could also arise if the centre wire
Dave, In your reply you mentioned: For the usual 500 volt 4700 pf polystyrene ( or the current 'equivalent material- polycarbonate??) capacitor this means enough wired - a) in parallel -- to keep the
Hi all, I've not been following all bulletins on loops, but a comment on frequency range should be made for any "inductance formula". Because of "long" wavelengths at LF, most amateur loops are "smal
John VE1ZJ, Thanks for the status report: Hi Bob, the ant I use for 136 came down this winter. Will re-erect when snow all gone . got 6 inches new snow last friday. I therefore was not looking during
Hi all, A direct QSL from Mike KB6WFC, Daly City, CA. His Argo pics confirm receiving a couple of clear Qs from ZL6QH, and other patchy reception.. 73, Bob ZL2CA
Hi all, Thanks for reports so far made. It looks like ZL6QH made it to the east coast of stateside again, but not across the next pond. I can confirm that ZL6QH made a reasonable go of it, from well
ZL6QH BEACON TESTING 23 MARCH ZL6QH will be transmitting on 23 March for all hours of local darkness. ZL2 sunset is nominally 0628 UTC, and sunrise nominally 1831 UTC (more sunrise and sunset details
ZL6QH TESTING 23 MARCH ZL6QH will be transmitting on 23 March for all hours of local darkness. ZL2 sunset is nominally 0628 UTC, and sunrise nominally 1831 UTC (more details in the list at the end of
Rik, I have some comments to make on corona: I just received a question about the corona effect with 136kHz antennas. Maybe it's an interesting item to add to my LF antenna webpage, therfore I would
Hi all, ZL6QH is intending to transmit LF beacon signals on Saturday 22 June. It is likely that the beacon will use the same narrow FSK and 120 second dot length beacon format as for previous tests,
Mal, The frequency stability of any selective level meter with a VFO for a local oscillator makes them suspect for staying tuned within a fraction of a Hz for long periods. The digital display on a S
Hi all, I earlier advised that ZL6QH would be transmitting on 137 kHz on Saturday 22 June. Various constraints have arisen and consequently the test this coming weekend is postponed. Possible dates a
Hi all, The tests done by Jim, and comments made are all very interesting. The following is a further matter to consider: For any counterpoise system that is elevated and insulated from ground, there
Hi all, Thanks to all who had a listen out for ZL6QH signals. Best DX from the 17 August test was by Steve VE7SL. This is the first time that Steve has had confirmed reception on 137 kHz, but he mana
Hi all, I can confirm that the ZL6QH beacon was on all night, without breaks, close to declared frequencies, and close to starting each Q on the hour. The keying sequence advanced a few seconds an ho
