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W4ZT
UHF Repeater
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Union
City, Georgia
442.125
MHz (+5 MHz) tone required 100 Hz
Down
East Microwave DEM70LNAK - 70 cm GaAs-FET Pre-Amplifier kit
Gain=17 db and Noise figure <.7 db
Gain=17 db and Noise figure <.7 db
(click
the small pictures to see a larger picture in a new browser window)
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This is the preamp kit as it comes. |
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These are the small parts. The surface mount GaAs-FET is in the small square package on the lower left. The other SMDs are in the little plastic tubes with the pointed ends. |
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The box top with the connectors and feed-through capacitor mounted. |
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The circuit board is mounted on the underside of the top with the connectors and feed-through capacitor connections coming through holes in the board. All the other components are then soldered to the board. |
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Closeup of the board components. |
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The completed pre-amp. |