If you don't hear anything, probably Java is disabled or the version is too old (i.e. pre-1.4.2).
NOTE 2 Antenna is normally Inverted-L (54m longwire) but can also be a MiniWhip or G5RV (2x17m), depends on the bands I'm using myself.
NOTE 3 Typical bands below 10MHz use LSB and bands above 10MHz USB, however, 60M uses USB as well as most professional users like coastguard and aircontrol.
NOTE 4 No sound with Google Chrome Browser? Try this: chrome://flags/#enable-autoplay-ignore-web-audio -> set enabled.
From version Chrome v76.0.3809.100 try this: chrome://settings/content/sound -> allow/add url: http://heppen.be:8091/
NOTE 5 For blind people, the list of waterfall tags can be downloaded here: ==> Click me <==
However, the list is longer then the bands we support, keep that in mind.
|23/09/2018 - We have TeamSpeak as well and work with: TeamSpeak3 Server Link If the link doesn't work server: RDRSN.MOOO.COM:9978|
|09/01/2019 - Today 3 SDRplay SPR1A are in use, covering from 0-2, 2-4 and 5.3-7.3 MHz, if there are hickups please mail me.|
|05/04/2019 - Programmed a spamfilter that shows "Spammer Detected! Bye Bye", this is to notify the spammer that he is noticed and removed. Still do not click on any links in the chatbox if you are not sure!!|
|15/06/2019 - Motherboard replaced with Q1900M 4x2GHz CPU, had some troubles to get it working, turned out speedstep was messing websdr up.|
|29/09/2019 - As of today the teamspeak-server of zendamateur.nu is NOT allowed to use this server in any way.|
|Don't be shy, please let us know your name and call in the box below, thanks.|