Clickable 444.375 Repeater/JASPER Digipeater Image

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TNC

The JASPER Digipeater TNC is a Kantronics® KPC-9612 dual port TNC. It supports both 1200 and 9600 Baud as well as digital paging.

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Power Supply

The power supply is an Astron RS-35M, 13.8 [email protected] Amps. The power supply powers both the UHF repeater and the digipeater.

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UHF Transceiver

The transceiver is a standard Motorola Micor® which has been modified for repeater use. The repeater modification allows the transceiver to transmit and receive simultaneously. A spare transceiver is available to allow quick replacement in the event of a failure.

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JASPER Digipeater Transceiver

The transceiver is a standard Motorola Micor® which has been modified for 1200/9600 Baud packet use. The transceiver does not have a receive pre-amp installed, however, the receiver sensitivity is still less than .25 [email protected] quieting. A spare transceiver is available to allow quick replacement in the event of a failure.

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Controller

The repeater controller is an ACC RC-85 microprocessor controller housed in an aluminum case. The single board provides all of the repeater functions, timers, phone patch, etc. All of the inputs and outputs are connected through a single 25 pin "D" connector to allow easy removal and replacement of the controller with a spare unit.

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Duplexer

The duplexer cannot be seen well in this image since it is covered with a large trash bag to keep out dust and debris. The duplexer is a Telewave, 4 cavity model. It basically provides isolation between the receiver and the transmitter and combines the two into a single antenna. By the way, the antenna (not shown) is a Hustler G-6 2/70 dual band and is shared between the UHF repeater and the digipeater. The antenna is fed with 7/8" Andrew Heliax® feedline.

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Commercial Equipment

This is commercial equipment that is also located at the repeater site

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Shelf

There's certainly nothing fancy here! The shelf that the equipment is sitting on is constructed from a scrap piece of rough lumber sitting on two concrete blocks.

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© 1997 [email protected]


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