---
N A 5 B S D R W E B R A D
I O R E C E I V E R
S Y S T E M ---
Welcome to Washington DC Area SDR HF radio receiver
system maintained by NA5B, e-mail na5b@hotmail.com
This receiver covers
VLF-LF-MF-HF Bands - Atomic Clock, Data, Lightning, Beacons, AM broadcast
stations, CB, 136KHz, 472KHz & 160m, 80m, 40m, 30m, 25m, 20m, 15m, 11&10m Amateur Bands Current system brief description;Antennas: Active Mini Whip & Cuschcraft R-7 Receivers: Modified RTLSDR's
with VLF low pass filter for MW and band pass
filter for each amateur HF bands. Server:
64 Bit Linux (Debian) with fiberoptic gigabit connection. System is still
under construction.
More information about the WebSDR project can be found on http://www.websdr.org.
Note: you need both Java and JavaScript enabled for this
page to work properly. If you don't hear anything, probably Java
is disabled or its version is too old (i.e., pre-1.4.2).
It seems Java is not installed or disabled on your computer. You need to install and/or enable it for this website to work properly.
Since Java version 7u51, Java needs to be enabled separately for each website; see http://websdr.org/java.html for instructions.
Your browser does not seem to support HTML5 WebAudio; please try a recent version of Firefox, Chrome, Opera or Safari; or switch to Java.
Bandwidth: ? kHz @ -6dB;
? kHz @ -60dB.
Or drag the passband edges on the frequency scale.
Waterfall view:
Or use scroll wheel and dragging on waterfall.
Speed:
Size:
View:
? dB;
peak
? dB;
mute
squelch
autonotch
Volume:
Audio recording:
Your browser does not seem to support downloading the recording; please try a recent version of Firefox, Chrome or Opera.
Signal strength plot:
Logbook:
Note: time, frequency, your name/call, and DXCC information are added automatically.
View the last 20 lines of the logbook,
or the entire logbook (ctrl-click for new tab/window).
Chatbox:
This chatbox is intended to discuss the operation of the WebSDR.
The operators of this site disclaim any responsibility for text appearing in this chatbox.