Dear all, the 472kHz.org website is online since 3 months, having over 13000 visits. 55 hams active on 630 meter registered and entered their station data (see http://www.472khz.org/pages/on-the-air/
Hello all, a complete off topic question about operating CW in France: Today I was asked by a ON ham under what conditions he can operate HF in France (under CEPT T/R 61-01). On the web I do find con
Hi Michel and Andy, thanks for the information, I will inform the OM who asked. 73, Rik Van: [email protected] <[email protected]> namens Michel Brunel <f5wk@mterrie
Hi Stefan, if you can keep both transmitters from feeding power into each other it should work. But one thing to keep in mind is that the 2nF parallel capacitor needed on ULF will reduce the overall
Hi Stefan, the picture makes clear what you intend to do. A possible pitfall could be the behaviour of the 1.3H coil at 475kHz (self resonances). 73, Rik ON7YD - OR7T ________________________________
Hello John, the drop down list of the first list page at 472kHz.org shows only those countries that are claimed at least once. Registered users can make first claims online (after logging in), if som
I thought that the German Novice licencees (DO callsigns) were allowed to transmit on 137 kHz (and 472 kHz) ? 73, Rik ON7YD - OR7T ________________________________________ Van: owner-rsgb_lf_group@bl
Oops .. should be were NOT allowed to transmit on 137 kHz and 472 kHz 73, Rik ________________________________________ Van: [email protected] <[email protected]> nam
Hi Chris, to avoid issues with the mast you can either - Feed the antenna at the top of the tower via an isolating tranformer. The big disadvantage is that you will have to position the loading coil
Hi Vinny, good idea, I have placed the announcement on www.472kHz.org . Unfortunately I will miss the JT9 party as I will not at home (a short holyday in Rügen / JO64UI). 73, Rik ON7YD - OR7T Van: ow
Dear all, I just received the message that Dick Rollema, PA0SE, passed away last Tuesday. Those who were active on 2200 m in the early days will certainly remember Dick, not only from his activity on
Hi Stefan, ever heard of a "A MEchanical Based Antenna" ? Me neither until today ;-) Have a look at https://www.fbo.gov/index?s=opportunity&mode=form&id=a7ad32588088d94cf6d66af19851b22e&tab=core&_cvi
Hello Peter, "My plans for April 1st 2017 are foiled. Argh!" And you probably would not be able to get a 23000000 USD grant ;-) 73, Rik ON7YD - OR7T ________________________________________ Van: owne
Hello Paul, thank you for this excellent article. I hop you don't mind that I added the link on http://www.472khz.org​ . 73, Rik ON7YD - OR7T ________________________________________ Van: owner
Technical contact for blacksheep.org is Stephen Purser, [email protected] or [email protected] (according to QRZ.COM). See https://www.whois.com/whois/blacksheep.org 73, Rik ON7YD - OR7T _
Just got an odd decode in JT9 mode on 475 kHz: 2040 -22 0.2 1385 @ 5B4ALJ DK2CH 73 Both calls seems to exist, but I can not find any trace of 472 kHz activity for these calls. Was this just a WSJT-X
​Hello Roger, 474.2kHz dial (USB). audio frequency just a bit mower than for WSPR (1200-1400Hz). I will be QRV this evening. 73, Rik ON7YD - OR7T Van: [email protected] <owner-
Hi Luis, you were also called by DG3LV and ON5TA. Your signal was audible most of the time, would have been OK in CW. At the moment I am using a temporary antenna, only 8m high, and about 100W output
Hello Luis, maybe your big building is good for transmitting but not so good for receiving due to all the local noise. Setting up a remote RX at a quiet location could do miracles. In JT9-1 mode sign
