Beacon Reception at JN1SDD by SoftRock and Octave

Reception of the IARU/NCDXF International Beacon Project beacons.

May stop without prior notice to reduce power consumption: Due to electric power shortage, it is possible to stop the monitor without prior notice. Thank you for your kind understanding. Regarding the current power demand in greater Tokyo area, please refer the following website.

TEPCO: Electricity Forecast

(July 2, 2012)

For BeaconAid-HF Users: I found that this site has a problem when you visit here by iPhone/iPadd app BeaconAid-HF. I want to fix this, but for a while, please click the button [<< 1 day before] in the page. It will show the graphs. Thank you for your patience. (Mar. 7, 2012)

News: Tobias Wellnitz (DH1TW) has kindly introduced my beacon monitor in his web site (or blog). Thank you, Tobias! (Jun. 4, 2010)

How to build your own: I've started writing article to duplicate my beacon monitor in your site. The article is just started and not completed at all. Thank you for your patience. The article is located here. A Q&A forum was also launched! (Dec. 4, 2010)

Location: Kanagawa pref., Japan. PM95rm, Lat. 35°30' N, Long. 139°25' E

Antenna: 5 meters horizontal wire at 8 meters high. No antenna tuner, coupler or preamp. Maintains one meter distance from a ferroconcrete building (25 meters high).

Receiver: SoftRock v9.0 Lite+USB Xtall with Electronically Switched v9.0 HF BPF. (photo)

Sound Card: On-board sound. Using 2 channels (I/Q) at 48 kHz sampling rate.

Monitoring System: Original design written from scratch. Implemented by GNU Octave running on Linux PC (Celeron E3300 at 2.5 GHz). (Not kind of running Windows as a virtual machine on Linux.)

Other Beacon Monitoring web pages are linked from the International Beacon Project Monitors site. This monitoring site is strongly inspired by Faros the great software which was written by Alex Shovkoplyas, VE3NEA and also using the original representation by Peter Ralph Jennings, VE3SUN. Thank you very much.