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January 28, 2006 Shively's field service guy, Shawn, tunes up the WHOLE now-8-station combiner. Each station has a "module" which keeps their signal from "mixing"
with the other stations |
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The KBOO combiner module in front, and the KFIS one behind
it, "branch" combined with the new KRYP module. The big one to the right is for KXL-FM, which was the last high-power station added. |
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Carefully engineered "branch" combiner point, cut
to frequency at the Shively factory in Maine. KBOO's on the left, KFIS's on the right, and the feed to the KRYP module leaving from the middle. |
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New KRYP combiner module, of the new Shively
"thin" style. Output on the left, input on the right. |
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There are 3 dB hybrid combiners on the inputs and outputs
of the two filters. MUCH bigger versions shown down the page for the higher power stations. |
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The KRYP combiner module feeds the wideband input. |
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As you can see, the feedline just keeps getting bigger as
more stations with more power are added, ending up with almost 170 kW into 9" line that goes all the way to the antenna. Here, Shawn is "sweeping" each stations' input through the output to the antenna. |
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Here's a picture from 2002 showing the input sides of the big modules. |
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Here's where the 9" line goes through the floor on its
trip to the tower. Note the size of the line compared to a phone book. |
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Oh. THAT tower. |
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93.1 KRYP Main and Backup exciters and transmitters...hey: only 550 Watts TPO. |
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Possibly the world's cutest coaxial transfer switch in the
upper left, for KRYP's 7/8" line. Note the normal-sized switch for 3 1/8" line. |