Links

Who is Viola?
Our mascot. A fictional person from a computer game
and from same, our fictional radio station.

More info and latest NEWs:
We normaly broadcast as announced in the weekends starting at 13:00 CET (CEST).
and sends normally in two hours (to about 15:00 CET / CEST).
If we do not send a weekend due to holiday, illness or death, it will be announced
in our FaceBook group. The same applies to additional unscheduled broadcasts.

Therefore :-)..
For more details and 'last minute info', sign up to our FaceBook Group:

You can also find Radio OZ-Viola on 'Google Maps'.
See North Zealand and search 'radio station' or search directly for 'radio oz-viola'.

If you want an E-QSL cards from us.
Then you should in the report you send, giving us the following information:
PS: You are also welcome to send us a 'sound file' report as extra info.

' Send your report to: jansteendk (a) hotmail.com '

Links:

If you don't have your own short wave receiver and a good aerial, try using a SDR receiver instead.

SDR Receivers:

http://www.websdr.org/        Menu..
http://kiwisdr.com/public/    Menu (Kiwi) ..

Here you will hear us best in the morning and in the afternoon:

http://websdr.ewi.utwente.nl:8901/?tune=5980AM    Twente Holland.
http://sa4bna.hopto.org:8073/ Arvika Sweden
http://sm2byc.ddns.net:8073/    Haparanda Sweden.
http://91.149.49.175:8073/    Hallingdal Norway
http://la9lt.proxy.kiwisdr.com:8073/ Budor Norway
http://websdr.uk:8060/ England.

Best at our night broadcasts:

http://sdr.ok2kyj.cz:8073/    Czech republic.
http://141.75.245.240:8073/    Nürnberg Deutschland.
http://kiwisdr.briata.org:8073/    Italy.

Or find one via the 'SDR-map menu'.
http://rx.linkfanel.net/

Or ... Sometimes you can hear us directly on our 'groundwave' without fading:
http://oz1bfm.proxy.kiwisdr.com:8073/    Vejby Denmark.

What is AM and what is ShortWave:

https://en.wikipedia.org/wiki/AM_broadcasting
https://da.wikipedia.org/wiki/AM-radio    On Danish.
https://en.wikipedia.org/wiki/Shortwave_radio
https://swling.com/
http://www.wrth.com/
https://www.hfunderground.com/board/index.php

You may risk that, a selected SDR is temporarily out of service,
so have some patience and try again later, or maybe the next day.

Try also Google....

Our signal out there.
Most of Europe, Iceland and sometimes in US
on 5980 / (6055) kHz.

Hvis du bor i vores lokale område, så kan du se her om du kan høre os via 'jordbølgen'.
Kvaliteten af signalet afhænger dog ofte af sidebånd fra nabofrekvenserne.
Alle målinger er foretaget med en håndholdt transistorradio med stavantenne.

The 'Station Master' Jan Sorensen (OZ8AO).

In our small studio.

From our 'technical room':

We are using this DDS exciter, also homemade..

Data:
Output 2.5W AM (10W PEP), al spurious better than -60dB. Adjustable frequency range without adjustments, 2 MHz. to 7 MHz. (+/- 1dB). Adjustable +/- 1 Hz. Stability +/- 5 Hz. 'after warmup'.
AF response 15 Hz. to 50 kHz. Excellent sound, under 1% distortion.

Our first homemade PLL Exciter: 2.5W 'balanced AM' (10W PEP). Spurious: -45dB.
Frequency stability after warm up: +/- 10Hz. on 5980 kHz. AF Distortion: Better than 1%.

Distortion measurement via spectrum.

Our antenna and Transmitter:

Being used mostly when we broadcast for our
'Groundwave listeners'.

Normaly we use 150W 'AM carrier' (225W RMS).
'PA space 1000W PEP'
We only use 150W carrier for neighborly reasons

It is not the best antenna in the world, but due to lack of space and neighbors it became the solution. But good for 'groundwave'.

Wednesday night (23:00 CET and one hour) we bring our broadcast 'Midnight Jazz'.

Erik from previous DR shortwave department, Stig from Radio 208, WMR and Jan from Radio OZ-Viola.