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Here it is. The bottom half is a
Motorola Micor repeater. Above the repeater is the 50 watt RF amp. If you look
closely through the holes you'll see that the amp is really just a GE Mastr-II PA chassis
with the GE boards removed and replaced with Micor mobile PA boards. The two
boxes above the amp are the Reno link consisting of a GE Mastr-II receiver and
Executive-II transmitter. Click for larger image |
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The main repeater antenna is a Decibel
Products DB-413 eight dipole array. It's aimed toward Sacramento and gives (I think)
about 12 dBd gain in that direction, 9 dBd off the sides and 3 dBd toward the back.
It's about 18 feet long. I've always had much better luck with these
exposed dipole antennas than with anything else (even Stationmasters). Click for larger image |
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This is the Scala Paraflector antenna that
links to the Reno repeater. I don't know exactly what the gain is, but I seem
to remember reading that it's 18 dBd. This one was made for the 450-470 band, but I
put longer screws in the ends of the elements at the feed and tuned it down to 420 MHz.
Click for larger image |
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Computer simulated coverage map. This is a pretty good computer simulation of the coverage. The grey area is strong, green is not so strong, red is weak. It's the same map as on the Mt. Vaca building page. |