Re: [IRCA] [NRC-AM] 486kHz transmission

[Doug Smith W9WI <dougw9wi@xxxxxxxxxxx>]

Brett Saylor wrote:
> Now that I listen to the clip again, I hear the mention of Fessenden 
> after the scripture reading. I've also been told that this is an 
> experimentally licensed 600 meter amateur station from WA1ZMS. I'd like 
> to find out what power it was using. 

There are 25 stations holding experimental licenses from the FCC to transmit in the 480-490KHz band.  It's probably WG2XFQ, authorized to use regular 
AM and Morse at 20 watts ERP on frequencies between 483 and 510KHz.  The name on the experimental license matches the name on the WA1ZMS amateur 
license, and the cited location (Forest, Virginia) matches a 144MHz beacon known to be operated by WA1ZMS.

It should be noted a recent international conference agreed to allocate the 472-479KHz band for regular (non-experimental) use by amateurs.  The 
allocation is effective January 1st, although it will take more time for the FCC to add the band to their regulations.



There are other amateurs authorized to transmit in the 480-490KHz band:

WE2XGR - licensed for 460-480KHz, CW, single-sideband, RTTY, and some kind of subcarrier telegraphy at 1,000 watts ERP.  Eight sites are listed (which 
probably means eight different amateurs are allowed to transmit under the same license); the licensee name & one of the sites matches amateur station 
K2ORS.  Sites are in New England and upstate NY.

WG2XJM - licensed for 460-480KHz, CW & PSK31 at 100 watts ERP from Saegertown, Pennsylvania.  Licensee name matches amateur station NO3M.

WG2XKA - licensed for 460-490KHz, CW, RTTY and PSK31 at 1 watt ERP from Rutland, Vermont.  Licensee name matches amateur station WA3ETD.

WG2XCT - licensed for 495-510KHz. CW, RTTY and PSK31 at 5 watts ERP from Spartanburg, South Carolina.  Licensee name matches amateur station N4LTA.

===

There are also a few commercial firms authorized to operate experimental transmissions in this area:

WE2XSR - Boeing is authorized to transmit unmodulated signals in the 435-510KHz band at 50 watts from two sites in Seattle.
WF2XMG - Boeing is authorized to transmit unmodulated signals at 50 watts on any frequency below 100MHz from sites in Portland, Oregon; Seattle; and 
Everett, Washington; on any frequency below 50MHz from Palmdale, California and Moses Lake, Washington; on any frequency below 74.6MHz from San 
Antonio, Texas; and any frequency below 1MHz from Tukwila, Washington.

WG2XFE - Medtronic is authorized to transmit on-off-keyed telemetry at 51.4 nanowatts from sites in Scottsdale, Arizona; Jackson, Mississippi; 
Louisville, Kentucky; and Nashville, Tennessee.  Seems to me you wouldn't need a license for such low powers!  These appear to be for medical 
telemetry, with the transmitters implanted in patients -- and a special condition on the WG2XFE license requiring Medtronic to retrieve the 
transmitters after the experiments are complete!

WE2XVO - LBA Technology is authorized to transmit unmodulated signals in the 435-495KHz band at 10 watts from mobile sites near Pactolus, North Carolina.

WA2XRM - RW Systems is authorized to transmit Morse & FSK signals at 100 watts ERP on 480KHz from a site in Colorado Springs.


--

Doug Smith W9WI
Pleasant View, TN  EM66
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