Transcript Repeaters
Repeaters What is a repeater? Receiver, Transmitter, Controller, Duplexer, Power Supply and an Antenna Overview of the Basics Types “makes and models.” •Fundamentals. •Controllers. •Audio. •Duplexers •Coordination •Brief description of IRLP, echo_link and other internet related linking systems Coordination Nebraska Frequency Coordinator John Gebuhr WBØCMC 2340 N 64th St. Omaha, NE 68104 Mid-America Coordination Council Requirements Rpt call Output Offset LAT/LON Contact Sponsors Access Emergency power Gen coverage RTTY HAAT Auto-patch Direct access to 911 ARES/RACES/CD Mailing address ERP Fundamentals Antenna Power Supply TX RX CAT 300 DX Coordination KØASH 145.310 Site Types Makes and Models 444.300 147.045 Controllers Accepts incoming logic and applies and outgoing logic Logic = Audio, Voltage Can be as simple as a switching transistor The controllers of today come with timers, ider’s, and some form Of remote control via DTMF. This is true of most home-brew controllers also. You wont find many features in the aforementioned style controller BUT the new controllers like Cat 1000 Features Features Include: •Voice Synthesizer DTMF Regenerator •Forty Voice Messages •DTMF Pad Test •Digital Voice Clock •DTMF Audio Muting •Grandfather Clock •DTMF Paging •Two CW Identifiers •DTMF or Pulse Dialing •Programmable Courtesy Tones •DTMF Window •(64) Control Functions •DTMF Repeater Access •(60) Position Scheduler •DTMF Command Generator •Full Feature Auto patch •Link Serial Tuning •(300) User Speed Dials •TS-440 HF Remote Base •(10) Emergency Speed Dials •FT-767GX HF Remote Base •Reverse Auto patch •RS-232 Interface •Last Number Redial •Hardware Inputs •Auto patch Cover Tone •DVR Controller Ready •Auto patch Time Extender •Programmable Prefix Codes •Macro Strings •TTL Computer Interface •Phone Number Read Back •Programmable Timers •Memory Saves •Two-Tone Paging •Caller ID Suppression •300 baud on Board Modem •User Function Switches •Link Auto Disconnect •Phone Number Lock-Out •Area Code Discrimination •Doug Hall RBI-1 Interface •Link Preset Frequencies Cat 300 DX NHRC (New Hampshire Repeater Controller) Voter 4 in Nebraska KØRPT(2), KØLNE, KBØTDY, RVS-147.045 Audio Pre-emphasized or emphasized Or discriminator VS speaker Brick low and high pass filtering Flat VS dynamic ranges Delay Forwarding the audio to the controller or voter Hysteresis Audio from the RX to comparator where converted into a numeric value then forwarded to Hysteresis module for switching then onto The controller and out to transmitter. Programmable variable switch Selection 0 1 2 3 4 5 6 7 Range 0% 2.50% 5% 7.50% 10% 12.50% 15% 17.50% db 2.50% 5% 7.50% 10% 12.50% 15% 17.50% 20% Duplexers BpBr circuit One side pass the high frequency While notching the low Other side passing the low Frequency while notching the low WP 641 WP 639 Power Supply Astron RM 50 M, RM 35 M, RM 20 M Any power supply that will handle the load Antennas Hustler G6, G7, HX6-14448 DB Products DB224E Diamond X510 and others Comet GP9 and others Any antenna will work, look out for those that have multiple couplings, Brass fittings with Caesar screws. These need to be soldered over After tuning as they will produce snap, crackle, pop in the signal as well as add potential de-cense. Internet Gateways IRLP (Internet Repeater Linking Project) ECHOLINK ILINK WIRES (Wide coverage repeater enhancement system) KØKKV Taking Measurements Inventory Bill Frost WØBX Tower Company Overlooking Lincoln Waiting While Climbing ½ Way There Still ½ Way There Setting up Feed Line Ready to Pull Final Resting Spot Heave Ho Antenna up Grip KØKKV KTØK Rain Dance