Real-time band conditions website

318th asa

Real-time band conditions websiteThe purpose of this experimental Web site is to provide 24-7-365 actual
(real-time) band condition information to CW QRPp, QRPe and CW/SSB for Contesters interested in increasing their scores.

It can also be of benefit to other Radio Amateurs to determine band conditions for Nets and casual QSO’s.

This information is not based on any software predictions or any kind of satellite based readings. It is based on a new Ionospheric sounding method called “HF Ionospheric Interferometry” which operates very similarly to the PolSAR system used by NASA.


This pages shows the ACTUAL REAL TIME conditions of the 80 to 10 meter bands across the Continental US ( CONUS ), with the exception of Hawaii and Alaska.

Reports are generated and uploaded to the web server every 30 seconds. Header information includes a Date, Time in GMT and a REPORT number in sequencial order. A web browser refresh command is also sent so the user does not have to hit the refresh button for the latest report. The web browser does it automatically for them. The display shows the Meter Band in RED and the BAND QUALITY INDEX ( BQI ) as a BLUE number at the bottom of the band scale.


This standard is based on a 1 watt transmitter connected via RG-8X coax to a halfwave dipole 25 feet high with the major lobe facing East/West. A band condition that provides a minimum of a 3 hop circuit i.e. 3 reflections, 3 landings and 3 skipzones is assigned a value of 100. This is just a minimum as band openings often provide much better propagation but these conditions are not indicated past the 100 scale. All Scales are adjusted to the individual propagation characterstics of each band. The BQI values are the same across all bands.


100 = Best for 1 Watt or less QRP, QRPp, QRPe – Band wide open

70 -100 = Reliable SSB QSO’s 100 Watts or less – Any ANT

51 – 69 = SSB requires AMP – Best DX for ANTs with main lobes 30 to 60 degrees from horizon

36 – 50 = SSB requires AMP – Best DX for ANTs with main lobes 0 to 30 degrees from horizon

19 – 35 = NVIS type ANTS work best here – Typically single hop circuits – Regional QSO’s only

0 – 18 = Groundwave ONLY – typically 25 to 35 miles – Vertical ANTs work best here


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