Apr 17
My satellite receiver "slept" for a while. Together with my son Michael we got the system running again. For this moment the receive system consists of a R2FX scanning receiver specially for this purpose connected to a crossed dipole antenna below the roof. The receiver AF output is fed into a PC with WxToImg (licensed version) running. The latest images are uploaded to this site, when we have the receiver running.
The antenna preamplifier seems to be defective. Thus the receive power is not as good, as it used to be. This has to be repaired.

DF9CY's weather images

Posted by Christoph Petermann

Apr 5
Still very busy with other things than radio. I will take down the tower in the next days for some work to be done on it like cleaning, painting and fixing the coaxes. The 2m antenna shall go up again.

Posted by Christoph Petermann

Apr 1
Just some activity on 40m in CW and the digital modes JT65/FT8. The influenca caught me and my spare time is filled with other things in the moment which keep me away from amateur radio.
But the Sporadic-E season is coming closer and I will have an eye on it early this year.

Posted by Christoph Petermann

Dec 4
CQWW DX CW Contest on 25/26 November 2017
Last weekend turned out to be a very quiet one and a view on the calender told me: Hey, there is the CQWW CW coming up. I decided to give out some points and did some preparations. My "surplus" FL2100 is a little bit broken, and so I had to go with about 75 watts only into my full size dipole on 40m which is up 9,5m in the middle with one side hanging down now. This is because my new neighbour did not like the antenna to be fixed at a pole in his garden anymore. It had been there for the last 15 years or so. So I took a pole of the garden fence - it is ours.
So Win-Test was prepared and I went in the room to make some contacts from time to time. It was more difficult than it has been in the WAG contest some weeks ago, where I made 350 QSOs almost in a row. I ended up with exactly 200 valid contacts (1 dupe) in 46 DXCC countries and 10 zones.
Why was it so much more difficult than the WAG? In the Worked All Germany everone is fixed to work a German station, but in CQWW you have to concur with everyone everywhere with mainly high power, that I did not have. Sometimes I thought, my radio did not work, because noone returned to CQs for quite a while, but out of a sudden I got 12 stations in five minutes. Sometimes I could not get stations beeing really loud, even when nobody returned their CQs. On the other hand I got weak US stations that were barely audible. But this is CQWW. And I am happy with the result.
On 4 Dec I sent the log out to the contest crew.

Posted by Christoph Petermann

Nov 3
You probably do not see it, but the whole site is rearranged and broken links are working correctly now. Especially the Subdomains I am running here in subdirectories had a lot of problems. They are all solved now.

My music bands site FolkZeit.
My private music site Christoph's Music

The FolkZeit page is a CMS (Content Management System) named Kirby. It uses PHP but is running in a file system instead a MySQL database.

The other site is a more simple HTML/CSS template, but I am thinking on changing it to Kirby (or GRAV, the concurrent product) in the future.

This page is realized with a blogging system called Serendipity, whereas the subpages are made with HTML/CSS again.

Have fun.

Posted by Christoph Petermann

Oct 24
50 MHz
24 October 2017 Worked some Aurora contacts to Norway and Sweden; hrd OH and GM.

7 MHz
23/24 October 2017
WAG (Worked All Germany) contest. I took some time and made 343 valid QSOs (checked) on 40m only and pure CW. I used the TS590s with about 80w of output. 41 DXCCs were contacted; so not bad at all for this very low installed dipole antenna.

Posted by Christoph Petermann

Sep 30
50 MHz
8 Sep 2017 Big aurora opening. I was home late, but worked about 30 stations up to 1450 km.

I have been very busy with my new job, so I was not QRV often.

Posted by Christoph Petermann

Sep 11
Working all the DX throughout the past months was somewhat annoying when I wanted to make digital (JT65 or FT8) contact right after having switched on the transceiver, the Kenwood TS590s. This happens, when the main reference oscillator is cold and has to warm up for some time. I experienced a frequency drift of over 120 Hz on 50 MHz in the first 30 minutes or so. This is a lot.
The best solution would be to feed an external GPS referenced signal into the transceiver, but where to get this stabilized 15,6 MHz from?
So I came THE other solution of putting in a more stable oscillator in form of a Temperature Controlled Oscillator (TCXO).
There a an option (03) available, where you must buy an expensive temperature controlled oscillator for far over 100€ for the original Kenwood equipment. Nowadays there are quite cheap equivalent types available through eBay. They all seem to originate from China. Prices of those parts vary from 12€ to about 50€. I chose to order one for 19€ where I thought, I could do nothing wrong with it. Worst case: perhaps it would not work. After 12 days (30 days were proposed) it arrived and installation was easy.

With a stable beacon signal I could see, that the drift has been reduced to about 5 Hz after 60 minutes. That is a factor of 24 times better than with the old crystal. And the resulting frequency is only 2 Hz away from where it should be on 50 MHz. This makes this man happy now :-)

Posted by Christoph Petermann

Aug 31
50 MHz
23 August 2017 Tried some IonoScatter to OH
22 August 2017 OH3 via Sporadic E
18 August 2017 Some Sporadic E to Spain
6 August 2017 Some inner EU FT8 signals are seen.
5 August 2017 The radio equipment, especially the computer, is repaired after the lightning strike and I am in business again.

Posted by Christoph Petermann

Aug 6
50 MHz
30 July 2017 Big lightning bolt hit the ground close by at 01:15z. Some stuff is damaged. Must QRT for some days.
29 July 2017 Big opening to NA. I worked some stations and heard signals from FN10,49, FM04,16,17,19,26,27,29, EM64,73, EN90
27 July 2017 Heard 4X and NA from FM07, EN71,87, EM40, EL29,49. And some inner EU contacts made.
26 July 2017 EA8 heard strong - very quiet else
23 July 2017 Some Italy and IS0 heard - no DX
22 July 2017 HI3T was received for a longer period
21 July 2017 Some CW QSOs to OH and YL
20 July 2017 Not much on Heard KP4 and 9K
19 July 2017 Worked in FT8 mode K4PI (EM73) & K1HTV (FM18). Heard JA from PM74, North America from FM18,27 FN03, EN90, EM47,64,73,74,88,76
18 July 2017 Received some US stations in now new FT8 mode. Worked EX8M (MN62) and UK8OM (MN51) for new grids.
16 July 2017 A big Aurora where I worked 25 stations
07 July 2017 now some day with almost nothing even from inside Europe
06 July 2017 BA4SI (PM01), Some JA and VE1SKY in the evening were received.
05 July 2017 6*JA in my receiver in the morning. Three of them replied to my CQ, but were gone a minute later. Rest of day was rather quiet.
04 July 2017 LA9BM/P (JP21) via Meterscatter was new grid. In the evening while out of the house stations from NA (CM98, DM03, 04, 13, 14, 25 and 34) were received in JT65.
03 July 2017 Missed the opening to Japan

Posted by Christoph Petermann

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© Christoph Petermann DF9CY - 2017