The WJ9J Repeater System

WJ9J REPEATER SYSTEM SPECIFICATIONS

Live Audio From the Repeater can be heard by clicking Here
List of available FREQUENCIES THRU WJ9J REMOTES as of 2/9/2006.

Remote Base Coverage Map. pdf of Remote Base Coverage Map
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The Repeaters that make up the system are: 442.150 444.450

442.150 Repeater pictures from tower

Location: Signal Mountain, Tennessee
Antenna Systems:

Repeater: A split antenna system using 2 Cushcraft 4 Poles
Link: 6 Element Cushcraft 440 Beam for Receive only

Antenna Height: 1787' Above Sea Level. 587' HAAT
Transmit Power: 25 watts at the antenna, 100 Watts ERP semi-directional to the South East
Repeat Audio:

Frequency Response: 10-6500 Hz +/- 1 db
Delay: 80 milliseconds

Method of Linking to 4.450: CO-PL Tone 71 Hz on Output
Repeater Controller: S-COM 5K

444.450 Repeater

Location: Big Ridge (Gold Point Ridge), Hixson, Tennessee
Antenna Systems:

Repeater Receiver: DB-420 16 Bay Antenna in Omni-Config
Repeater Transmitter: Cushcraft 8 bay Semi Directional to the north
2 Meter Remote Base: Cushcraft 15 Element Boomer
220 Remote Base: Cushcraft 11 Element Beam
440 Remote Base: Cushcraft 11 Element Beam
6 Meter Remote Base: Cushcraft 5 Element Beam
Link Receiver Antenna: 9 Element Motorola Beam

Antenna Height: 1200' Above Sea Level (Repeater Receive) 290' Above Average Terrain
Transmit Power:

Repeater Transmitter:

High Power: 100 watts ERP Omni-directional

6 Meter Remote Base Transmitter:

Low Power: 1 Watts at the antenna 10 watts ERP
High Power: 9 Watts at the antenna 90 watts ERP
(Not rotatable on 6 meters)

2 Meter Remote Base Transmitter:

Low Power: 3 watts at the Antenna 81 Watts ERP Remotely Rotatable
High Power: 42 Watts at the Antenna 1200 Watts ERP Remotely Rotatable

220 Remote Base Transmitter:

Low Power: 4 Watts at the Antenna 80 Watts ERP Remotely Rotatable
High Power: 20 Watts at the Antenna 400 Watts ERP Remotely Rotatable

440 Remote Base Transmitter:

Low Power: 3 Watts at the Antenna 60 Watts ERP
High Power: 15 Watts at the Antenna 300 Watts ERP
Remotely Rotatable

Repeat Audio:

Frequency Response (Passes all CTCSS or PL Tones):

Repeater Input to Output: 30-6000 Hz +/- 1 db
Repeater Input to Link Trans.: 30-4500 Hz +/- 1 db
Link Rec. to Repeater Trans.: 60-8500 Hz +/- 1 db
Digital Sound Blaster Card: 30-5000 Hz +/- 1db

Delay Repeater Input to Output: 100 milliseconds
Delay Repeater Input to Link Transmit: 275 milliseconds

S-Meter Read Back System: Signal to Noise Comparison
Method of Linking to Other Repeaters: Frequency Agile Remote Bases controlled via Touch Tones.
Repeater Controllers:

IBM PC AT Compatible running home brew software.
SCOM 7K and PLUS TEN Controllers.

For more information, email wj9jrg@juno.com

Last updated 2/9/2006