CyberHome of the Staten Island Repeater System

Technical and "other" Information


The Current 550 Machine.....

Motorola Quantar UHF P25/Conventional info coming soon...

The OLD 440.550 Repeater


In its former life, this was a Public Safety UHF DC Remote Station commissioned to a local Gov't facility. The FCC Mandate for Narrowbanding has made these reliable workhorses available as "Surplus" now for our use.

I doesn't take much to make these work in the Ham Bands. A little tuning, wiring and patience.

It came in a U.S. Gov't Gray ("if it don't move, paint it") 48" GE Cabinet with a 75 Watt PA and 30 amp power supply. I wired out the CAT Repeater Controller points to a DB-25m cable soldered to the backplane. Plug and Play. Install the "ICOMs" or Crystals and let it "Burn In for a few days, Check and install.

A spare CellWave PD-526 duplexer was pre-tuned and then installed at the site. It weighs in around 180 Lbs, not exactly portable, but a spare.

(Thanks to Steve WB2ZSE)


Technical info on our repeaters....



  The original KC2LEB machine was a GE Mastr IIe UHF 100 Watt Continuous Duty Repeater Station w/PLL exciter. It was removed from service due to a lightning hit in April 2011.

Some of the parts were recycled or donated to other projects.

TX 440.550 / RX 445.550 Crystals by International Crystal Manufacturing

Channel Guard Tone of 141.3 has 180 degree reverse burst for quieting.

A 7.2db Diamond X50NA Repeater Antenna fed with 75 feet of 7/8 Andrew Heliax connects an RFS PD-526-4-2 6 cavity Duplexer to the system. An AR2 Recieve Pre-Amp with a 3db pad puts your signal into the receiver.

A GE Mastr III 33 Amp Power Supply is part of the Battery Backup System with a GE Mastr III 10 Amp Battery Charger connected to a pair of 225 Amp Hour AGM Batteries in parallel.

Remote Receivers were to utilize the GE Mastr Voting System.

Links use CAT Controller ports

All of the equipment (and spare parts) used in this project was purchased, donated, found in dumpsters or rescued from the perils of the sea. No radios were harmed in the construction of this repeater. KC2GOW was fed and watered as per the SIEC.

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