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Mar. 28 2012

New Transmitter Building Project

By Bob Lenio | Posted in Staff Blogs, WBJC News | 10 Comments

WBJC is in the process of installing a new precast building to house two new transmitters and ancillary equipment for analog and HD transmission.  Here you see the preliminary work on the slab foundation for the new building.







Here’s the completed   foundation.  The building to the  right houses WBJC’s exisiting transmitters.  The 34 year old structure will be demolished once the new building is complete and the new equipment is installed.  The old transmitters will be traded in and find a happy home far away.




 The new transmitter building requires an additional transformer and  feed from the power company.  These are the conduits that  will house cables that connect the power company feed, transformer, meter and disconnect panel, to the new building.







This is the new power company “H frame” that was installed in order to accommodate the new building.  The H frame holds the new electric meter and the main power disconnect for the new building.









The new power company transformer will be mounted here.

Bob Lenio


Bob is WBJC's Chief Engineer. If you have a question about signal reception, equipment or the website streaming, you can contact Bob at blenio@bccc.edu or 410-580-5800.

10 Responses to New Transmitter Building Project

  • Doug says:

    Cool, love this technical stuff – thanks, Bob! How old are the current transmitters? I’ve always piddled around in the electronics hobby, but I don’t know anything at all about the equipment that’s used for commercial (OK, non-commercial!) 🙂 radio and television broadcasting.




    Hi Bob, Will the new TX have a greater output than the present TX? It would be terrific if you can get the stn manager to consider adjusting WBJC radiation pattern to favor DC and NVA. 73
    Tony Gates, N3GE

    • Bob Lenio
      Bob Lenio says:

      We will be putting the same amount of power towards DC and NoVa. This is all that the FCC will authorize.
      Any more power, we will step on other stations that are on adjacent frequencies.
      We expect to gain a clearer, more consistent signal with the modern equipment.
      The difference should be dramatic if you are in range of our HD signal and have an HD radio!

  • Patrick Fero says:

    Great stuff. Thanks. living on a ridge here in southern PA almost due north of your, I’ve been able to get a decent signal using a TV antenna on the roof. The same antenna pulls in WAMU’s HD broadcast from DC. Will probably take a little antenna jiggling, but I’m counting on a great HD signal from WBJC, which is my main listening source.

  • Ed Pochatko says:

    Hi Bob,
    Do transmitters still use vacuum tubes? If not, what technology replaced them?

    • Bob Lenio
      Bob Lenio says:

      There are still transmitters on the market that use vacuum tubes.
      These transmitters are solid state, except for the final power amplifier tube. Our new transmitters will not use any tubes at all. They use multiple solid state RF power amplifier modules in place of a final tube.

      • joseph Cierniak says:

        I’m an ex amateur operator from way back. I remember the know-it-alls stating that due to high power requirements the final output of a commercial radio station would always require a vacuum tube. I was right, they were wrong. 🙂


  • Tony Glaros says:

    Where is your antenna? Who owns it? Are there any other radio stations, emergency organizations, etc., that also are up there? Also, how important is height when it comes to radiating an FM signal? I read where the FM towers on the Empire State Bldg. all are relatively low-power. Thanks!

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