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Radio
Broadcast Technical Consulting and Sales |
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Customer |
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WVAL
AM
800 KHZ/2.5 KW |
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WVAL Radio has been in Sauk Rapids/St Cloud since the 1960's. Their original 800 KHz/250 watt day signal was turned off in favor of their new 660 KHz 10 KW day/500 watt night 4 tower facility in 1986. Then, in 1998, we sold them a Kintronic phasor/combiner system to add 800 KHz on their 660 KHz AM transmitter/antenna system. That's right, WVAL asked for and got their original 800 KHz frequency back. It runs 2700 watts day and 900 watts night. The Kintronic phasor is shown behind Mark in the photo below. |
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September 14,
2007: Here is your intrepid
engineer, Mark Persons, smiling while admiring the installation of a new
FMeXtra system at
WHMH Radio. This FM sub-carrier has two stereo digital program
channels on top of the regular analog FM stereo. All of the
modulation is compatible. There is even a 57 KHz RDS/RBDS data
stream on the carrier. Behind Mark is the backup transmitter for WHMH. The main transmitter is fed by a Moseley PCL 6010/6020 STL system. Photos at the right show the test setup behind the equipment rack. There is a Tektronix 2215 Oscilloscope, an IFR A7550 Spectrum Analyzer and a Telewave 44AP Wattmeter. The result was spectacular. For a $12,000 investment, two additional digital stereo feeds were broadcast without the necessity to go with Ibiquity IBOC. Digital reception goes out 45 miles. |
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Here is Mark installing a FET (Field Effect Transistor) RF driver upgrade kit on WBHR's Harris MW-10B AM transmitter. The kit took about 4 hours to install and improved transmitter reliability. The WBHR night signal was increased to 500 watts in 2005. WHMH FM was a 3 KW facility on 101.7 MHz. We upgraded that to 38 KW in 1996, then to 50 KW in the year 2000. Their Web site is: http://rockin101.com" The WVAL Radio Web site is: http://www.800wval.com The WBHR Radio Web site is: http://www.660wbhr.com The telephone number for WVAL/WHMH/WBHR Radio is 320-252-6200. |
page last edited 03/22/2008
