Dayton, OH (August 29, 2006)–WFCJ-FM, a 50.0 kW Christian broadcaster serving the greater Dayton market, announced that it has successfully powered up and tested its new HD-1 channel using a Jampro space-combining JLST model two-bay antenna in concert with its main six bay dipole antenna.
“We looked at all the different methods of going HD and they were all expensive,” commented John Graham, chief engineer. “Fortunately, we had an unused 7/8 inch transmission line on the tower. Jampro provided the JLST’s designed for mounting on a 15-foot pole, which they also supplied and we bolted the assembly to the tower in a few hours. We estimate we saved about $20,000 over the high combining transmitter alternatives we considered.”
Prior to shipping to WFCJ, Jampro tested the JLST antenna configuration on a similar tower at its Sacramento, CA full-scale, far field test range and provided install diagrams, and test documentation to Graham. “Now if my main transmitter goes down, I can still use the Jampro as a backup for my analog and digital channels at reduced power.”
The Jampro antennas were installed at 460 feet, 25 feet below the existing six-bay. Graham’s JLST test revealed an excellent VSWR.
WFCJ-FM (93.7) is a not-for-profit station owned by Miami Valley Christian Broadcasting with a religious talk and music format. In the near future, the station plans multicasting with the addition of an all music HD-2 channel.
The JLST is a circularly polarized, low power FM antenna designed specifically for omni-directional translator/booster applications and rated at 500-Watts maximum input. It is made of stainless steel and hot-dipped galvanized steel and a stacking harness can be used to add multiple bays to achieve the required gain.
Jampro Antennas/RF Systems Inc.