|
Hello Stefan,
It shouldn't be too difficult to produce several 100W RF (or more) with a decent sideband surpression. Just a mather of a proper voltage regulation and enough C's in the PSU.
The other band users will appreciate it ;-)
73, Rik ON7YD - OR7T
PS: Now it is up to the active stations how this will continue!
If we can leave a decode on their site, they will probably put more attention and enthusiasm into that 630m band, even if our 50 Hz sidebands are just rejected by 37 dB.
Alternatively we can reject them by 50 dB at 10W RF and stay here in a range of 1000 km.
73, Stefan
Am 07.03.2018 19:21, schrieb DK7FC:
Hi Luis,
Yes, play the ball!!!! You are in an excellent location and your signal is, i would say, in the TOP 3 of EU :-)
I'm still transmitting on VLF daily but if DP0GVN comes on air before 22:30 UTC i may give it a short try.
The greyline is reaching their location right now!!
Due to the always up to date image of their webcam i assume that they will upload sports immediately.
73, Stefan
Am 07.03.2018 19:07, schrieb VIGILANT Luis Fernández:
Nice to see the good news Stefan
J
Now the ball is in our side. From 4 to 7 UTC may be a good window for North America too
73 de Luis
EA5DOM
Hi MF,
Since a few weeks the German Antarctic research station Neumayer III (https://en.wikipedia.org/wiki/Neumayer-Station_III) is running a Red Pitaya on a wideband RX antenna to receive/decode/upload
WSPR reports on up to 8 bands simultaneously. You may have noticed them already on the WSPR map on other bands. I saw regular spots on 160m from DL statations and other countries in EU.
They seem to have quite a good satellite internet connection. So uploading WSPR spots is no problem. They also run an up to date webcam showing an image for example here:
https://www.qrz.com/db/dp0gvn
One of the maintainers of the radio station there is Felix / DL5XL. I know him personally and, taking the idea of EA5DOM, i contacted him and asked if they want to try to receive on 630m as well. Yesterday i got an answer.
DP0GVN in IB59UH will receive WSPR(2) on 630m daily between 4...7 UTC now.
I asked them if they can extend the time to 20...07 UTC. Let's see.
So turn on your PAs and make a first contact from your continent to Antarctica on 630m! And spread the message into other reflectors, VK could be in a favorite position.
73, Stefan
|
