UBARoyal Belgian Amateur Radio Union

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Photo: Couloir

Old "DX News" messages

New satellite website
14-01-2011
Submitted by: ON4AVJ
Our friend ON8PM, has made a new satellite website with a lot of information.
Go and visit Satellite Activity.
70 MHz in Iceland
27-12-2010
Submitted by: ON4AVJ
The national association of Icelandic Radio Amateurs, Í.R.A., is pleased to announce that as of December 13, 2010 continued access for Icelandic licensees has been secured on the 500 kHz, 5 MHz and 70 MHz bands. In a letter from the Icelandic Post and Telecom administration dated December 13, 2010 access to the 500 kHz and 70 MHz bands previously granted on February 19, 2010, and to the 5 MHz band, previously granted on January 1, 2008 – all due to expire on December 31, was extended for two years, to December 31, 2012.
 
Privileges and access to 500 kHz and 70 MHz remains unchanged (see below). Nevertheless, Í.R.A. is delighted to report that we have been granted 150 kHz in the 5360-5410 kHz band, as a replacement for eight fixed channels, previously permissible. Maximum power allowed on 5 MHz was though reduced from 200W to 100W (20 dBW).
 
THE 4 mETER allocation. Frequency span: 70.000-70.200 MHz. Access is granted on secondary basis. Maximum bandwidth is 16 kHz and power limit is 100W. Licensees need to apply to the PTA for a special license. The experimental license is open to both “N” and “G” license classes.
 
Dutch Amateur Contest (DAC)
16-10-2010
Submitted by: ON4AVJ

I am very pleased to inform you that the VERON VHF commission has decided to approve my proposal to introduce the Dutch Amateur Contest (DAC).
The first contest will be Tuesday January 4 in line with the NAC and the UKAC. The bands and dates are exact copies of the NAC.

50 MHz in Oman
13-08-2010
Submitted by: ON4AVJ
In a letter dated 4 August 2010, Brgd. Abdulrazak Alshahwarzi, A41JT, the Secretary General of the Royal Omani Amateur Radio Society, informs that the 6 metre band (50 – 52 MHz) has been allocated for the Amateur Radio and Amateur Radio usage by the Telecommunications Regulatory Authority in the Sultanate of Oman, on a secondary basis, effective June 2010.
 
Radio amateurs in the Sultanate of Oman hope to work you on the "Magic Band."
QRP moonbounce on 5.7 GHz
14-07-2010
Submitted by: ON4AVJ
Hi all,

Good activity on 5,7 GHz EME was expected during the second week-end of july, thanks to the coordination of G3LTF.

I decided to have a try, using my 2,3 m offset dish and the system used normally for tropo and rain scatter.
This system consists of a transverter kit from DB6NT and a modified surplus 6 GHz amplifier, giving about 8 W output.
Noise figure of the system is around 1 dB.

The 5,7 GHz transverter has an output on 144 MHz and is followed by another transverter 144 to 28 MHz.
There are various 28 MHz outputs. One output goes to a yaesu FT840 HF transceiver.
Another output goes to an SDR, and another one to a calibrated 28 MHz receiver, allowing precise measure of sun noise and moon noise.
During operation, permanent reading of moon noise allows perfect aiming of the dish and confirms that the system is working alright.

Most EME stations use circular polarization, so a "septum feed" was built following a description by OK1DFC.
Dimensions were adapted in order to illuminate correctly the offset dish.

After optimizing carefully the position of the feed, I could measure 0,5 to 0,6 dB of moon noise versus cold sky. Sun noise was a good 10,5 dB, meaning that the receiving side was working correctly. The feed has some sidelobes and is far from perfect, but efficiency seems to be quite good.

Now the results: during the week-end, 13 stations from Europe, USA and Japan were heard.
To my great surprise, some of them were even able to decode my QRP signal and 3 good QSOs resulted !!!

Conclusion: this band offers very interesting possibilities for the experimenter.
Tropospheric propagation and rain-scatter allow surprisingly good distances even with very small set-ups.
The above results also shows that EME contacts are possible with very low power, thanks to the amazing receiving capability of some stations.

73
Eric
ON5TA
Croatian 50/70 MHz Contest
13-05-2010
Submitted by: ON4AVJ

Croatian Amateur Radio Association invites you to participate in the third Croatian 50/70MHz contest on Saturday, May 15th 2010 from 12.00-17.00 UTC.
Contest rules can be found at: http://www.hrvhf.net/upload/croatian_50_70mhz_rules.pdf

Prizes: The first three stations in each category PLAQUES
Logs you can put by yourself on our VHF contest robot www.hrvhf.net Contest tab > upload EDI.
It's very simple.

73
Mate 9A4M
Croatian VHF/UHF/mw manager

ON0VHF and propagation....
11-05-2010
Submitted by: ON4AVJ
DL7AFB wrote tu us about ON4VHF....

Dear OM's,
during last VHF contest I made a record of your beacon ON0VHF, which is always audible from my fieldday location in JO62JA, 588km away. Conditions were moderate, but the beacon was readable anyway.
Please listen to the sound sample on YouTube: http://www.youtube.com/watch?v=neVnSNYYmNE
best regards
Bodo, DL7AFB
First contact JA-ON on 3cm
28-02-2010
Submitted by: ON4AVJ

Yesterday Eric, ON5TA had a first QSO with JA on the 3cm Band EME. 
Congratulations....

The QSOs needed quite a lot of preparation work, because japanese hams are only allowed to transmit on 10.450 MHz, not on 10.368 MHZ.
So a new receiving system had to be build here in order to be able to make "crossband" contacts.

We also needed a common window and the best possible moon conditions. These conditions were met yesterday, but wind could have been a problem.
The japanese hams used big 5 to 6m dishes, very sharp on 3 cm, which make aiming to the moon very difficult with the slightest wind.
As you know, we had wind here yesterday evening, but it was manageable during the QSOs

This why JA4BLC is talking about "a miracle" in his mail. HI !

A little piece of the mail of JA6CZD
Hi Eric,
Yes, QSO by ON5TA-JA6CZD is the first ever between ON-JA on 3cm EME, GREAT!
Me too very much pleased to work you. You are MY #3 on 3cm EME and good signal as well as G4KGC I worked 30minutes before.
It was miracle no wind happened during our QSO.


 

Iceland on 70MHz
22-02-2010
Submitted by: ON4AVJ
On February 19, 2010 The Post and Telecom Administration in Iceland granted a temporary experimental access to the 4 meter band in Iceland. The permit is valid until December 31, 2010.

Frequency span: 70.000-70.200 MHz. Access is granted on secondary basis. Maximum bandwidth is 16 kHz and power limit is 100 W.

Licensees need to apply to the PTA for a special license. The experimental license is open to both “N” and “G” license classes.
Congratulations Dirk
07-12-2009
Submitted by: ON4AVJ
Dirk, ON5GS, went on a Dxpedition last year november, during the BCC Meteor contest as EI/ON5GS/P. He activated the squares IO55 and IO65.

With a score of 128 QSO he is the winner of this contest in the Single OP class.
You can find the complete results on this page