Friday, August 31, 2007

DX Tests

Jim Pogue, KH2AR, joint Test Coordinator for the NRC and IRCA, has announced the season's first two DX Tests:

WIRL-1290 Peoria, Illinois:
WIRL will test at 0200-0400 Central time on Sunday morning, October 21st. (this is after midnight Saturday night)

Reports may be sent to:
Wayne R. Miller, Chief Engineer
WIRL Radio
331 Fulton, Suite 1200
Peoria, IL 61602

The station will accept recordings by email or on disk - .mp3 or .wav OK, no cassettes please.

Include a SASE with your report.

WLPO-1220 La Salle, Illinois:
WLPO will test at 0300-0330 Central time on Saturday morning, October 27th. (this is after midnight Friday night)

Reports may be sent to:
Steve Vogler, Chief Engineer
WLPO Radio
1 Broadcast Lane
Oglesby, IL 61348

The station will accept recordings by email or on disk - .mp3 or .wav OK, no cassettes please.

Include a SASE with your report.

As always, see for details on these and other tests. Good luck!

Wednesday, August 29, 2007

New AM stations

Billings, Montana: 1530KHz:
Permit granted for new station.
50,000 watts daytime, non-directional
10,000 watts critical hours, directional (same pattern as at night, I think)
750 watts nighttime, directional

Prescott, Arizona: 1300KHz:
Application filed for new station.
1,500 watts daytime
300 watts nighttime
directional all hours, different patterns day & night.

Tuesday, August 28, 2007

New AM station

Wink, Texas: 1480KHz:
Permit granted for new station.
1,000 watts daytime, non-directional
250 watts nighttime, directional

Wednesday, August 22, 2007

New AM station

Quantico, Virginia: 920KHz:
Permit granted for new station.
2,000 watts daytime
970 watts nighttime
DA-2 (different patterns day & night)

Monday, August 20, 2007

AM call changes

The following AM stations have changed callsigns in the last month:

Oakland, California: 960KHz: from KQKE to KKGN
Bunnell, Florida: 1550KHz: from WAYI to WNZF
Gibsonia, Florida: 700KHz: WJWB assigned to new station
Cochran, Georgia: 1440KHz: from WDXQ to WDCO
Elberton, Georgia: 1400KHz: from WSGC to WNGA
Haverhill, Mass. 1490KHz: from WCCM to WCEC
Salem, New Hampshire: 1110KHz: from WCEC to WCCM
Ruidoso, New Mexico: 1450KHz: KWES assigned to new station
Delaware, Ohio: 1550KHz: from WXOL to WDLR
Sand Springs, Oklahoma: 1340KHz: from KTKX to KJMU
Bellaire, Texas: 1560KHz: from KILE to KGOW
Cameron, Texas: 1330KHz: from KMIL to KTAE
Rural Retreat, Virginia: 660KHz: from WJRK to WLOY
Anacortes, Washington: 1340KHz: from KLKI to KWLE

AM frequency change on Guam

Agana, Guam: 630KHz:
KUAM's application to move from 612KHz has been approved.

612KHz is a valid AM channel in ITU Region 3, where Guam is located. However, digitally-tuned radios sold for use in the U.S. cannot tune this channel. They can tune 630. Presumably this is why KUAM has moved. Stations in the nearby Northern Mariana Islands have made similar moves.

Thursday, August 16, 2007

FM translators of AM stations

The FCC has proposed to allow FM translators to relay AM stations. 

A handful of these are already authorized under STA.  (I'm aware of five, but the FCC document says there are eleven) 

The proposal would restrict the FM translators' 60dBu contour to within the 2mV/m daytime contour of the AM station, or a 25-mile radius of the AM transmitter site, whichever is less.  (60dBu is the radius to which most full-power FM stations are protected from interference.  The 60dBu contour of a 250-watt translator with antenna 100m high is 13km, about 8 miles.  Most translators are somewhat less powerful.)

Normally, a FM translator is required to go off the air when the station it's authorized to relay is off.  The FCC proposes to allow FM translators of daytime-only AM stations to continue operating after the associated AM goes off for the night.  (and for those of Class D AM stations with very low night powers to operate at night even if the associated AM station isn't using its AM night power)

Some questions the FCC is asking:

  • Should eligibility to apply be phased in?  (should daytime-only and "graveyard" AM stations get first shot?)

  • Should AM stations whose owners don't have an FM in the same market get first shot?

  • How many translators should a given AM be permitted?  (Wisconsin Public Radio proposed limiting a given AM station to ten FM translators)

  • Should AM owners be allowed to lease FM translators owned by others?  (normally FM translator owners may not receive compensation from the station being relayed)

  • Should FM translators operating below 92MHz be limited to relaying non-commercial AM stations?

  • (I also note it looks like old friend "" is no more, it
    seems to have been replaced by a new server  That
    probably explains some "weirdnesses" on the FCC website for the last
    week or so!)

    Wednesday, August 15, 2007

    Major AM station change granted

    University City, Missouri: 1190KHz:
    KRFT granted move from DeSoto.
    Daytime facilities remain unchanged at 10kw.
    Nighttime power increase granted to 6.5kw, (from just 22 watts) directional, different pattern from daytime.
    Also different site... night facility to be at 38-26-13N/90-16-45W.
    This is in Illinois, just across the Mississippi River from Oakville, Missouri.

    IBOC rules published: 30 day clock started

    The final IBOC rules have been published in the Federal Register.

    This sets the 30-day clock for nighttime IBOC. September 14 will be the day.

    Tuesday, August 14, 2007

    New AM station (and not)

    Las Vegas, Nevada: 670KHz
    New station granted.
    10,000 watts daytime;
    600 watts nighttime;
    DA-2 (directional, different patterns day & night)
    Station already assigned call letters KBTB.

    Sahuarita, Arizona: 670KHz
    Application for new station dismissed in settlement agreement with applicant for mututally-exclusive Las Vegas station above.

    Major AM station change

    Daphne, Alabama: 550KHz:
    WASG proposes move from Atmore.
    Power would be reduced from 10,000 watts to 5,000 daytime, but would increase from 143 watts to 157 at night.
    Station would remain non-directional, from a single tower at 30-44-44N/88-05-40W.
    Daphne is a Mobile suburb.

    Saturday, August 11, 2007

    Mexican objections to IBOC

    Radio World's Leslie Stimson reports the Mexican government has filed objections to the deployment of IBOC along the U.S. southern border.

    Friday, August 10, 2007

    Major AM change

    Plum Springs, Kentucky: 1450KHz:
    WCDS granted move from 1440KHz in Glasgow.
    Power to increase to 1kw day & night, non-directional.
    Tower at 37-00-37N/86-25-26W.
    New location is a Bowling Green suburb.

    Wednesday, August 08, 2007

    Major AM station change

    Bala Cynwyd, Pennsylvania: 1540KHz:
    WNWR has filed to change its city-of-license from Philadelphia.
    No technical changes are planned.

    Tuesday, August 07, 2007

    AM major change dismissed

    Carlsbad, Texas: 1590KHz:
    KEAS application to move from Eastland and increase power to 1kw dismissed.

    Monday, August 06, 2007

    Major AM change

    Montrose, Pennsylvania: 800KHz:
    WPEL granted frequency change from 1250KHz.
    Daytime power remains unchanged at 1,000 watts, non-directional.
    New nighttime operation granted at 135 watts, also non-directional.

    New AM station

    Ridgecrest, California: 1400KHz:
    Application for new station reinstated.
    1,000 watts daytime; 500 watts nighttime; non-directional