146.28 - 146.88 Repeater

2016 146.88 Repeater The new 146.88 repeater.

Strapped to the top of the cabinet is the Wacom Duplexer for eight inch cavities.
At the top front is a rack that holds four Motorola Maxtracs that serve as the UHF link receivers.  One is missing right now, it didn't meet specs so Bob pulled it out to work on.  All four a programmed identically and can listen to whichever frequency we need. At the back of the cabinet is a small rack that holds the receiver pre-amp, a band-pass amplifier, and the four way signal splitter that connects the link receivers to the antenna out on the roof.
Next item down is the Kenwood TKR-750 VHF repeater. The heart of the new system.
It's hard to see, since it is mounted at the back of the cabinet, but in the gap is  the 120 Watt Continuous Commercial Service Henry amplifier.  The muscle of the system.

Next at the front is the isolator panel, this prevents us from re-transmitting any RF coming down from the antenna.
Next is the CAT RLS 1000 link receiver switcher.  It is not a voter, but a switch and audio mixer.  We control which receiver is used by using different PL tones.  The Kenwood VHF receiver is connected directly to the controller.  The UHF receivers connect first to the RLS switch, then to another port on the controller.  The CAT RLS 1000 would be the nerve center of the system.
The rack panel with the bright blue LEDs is the SCOM 7330 Repeater Controller.  It can support three separate repeaters at the same time.  They can operate independently or be mixed and matched to your hearts desire.  How they are mixed and matched is completely controlled by the programming of the 7330.  Using one of more RLS 1000s or similar pieces of equipment you can expand your repeater even more, with link receivers, remote bases, IRLP or Echo link nodes.  You can even tie in another SCOM controller and support more repeaters/remote bases etc. The SCOM is the brains of the system.
In the gap under the controller at the back of the cabinet is the 12 V power bus, Every active device has its own fuse back on the power bus.
Next is the 75 amp switching 12 V power supply;  The guts of the system.  It's actually overkill for the amount of current we use. Probably around 20 amps when the repeater is keyed up.
Down at the bottom of the cabinet is the Motorola Quantar repeater operating on the 900 MHz band.  It is completely separate from and independent of the 88 repeater.  They just share the cabinet.
It now carries the WA5LVT call sign.

Wacomm duplexer 2 transmit 2 receive  
   
 
   

Rewriting this page.

Check back soon for the NEW 88 specs and pictures.