HUB END Hub/Spoke or Star system. Pros – Simple, economical system for a general area. – Short key up time. – End sites utilize simple transceivers rather.

Slides:

Advertisements

Similar presentations

Amateur Radio Technician Class Element 2 Course Presentation

Advertisements

Mastering Your Handheld Radio

An amateur radio repeater is an electronic device that receives a weak or low-level amateur radio signal and retransmits it at a higher level or higher.

Chelmsford Amateur Radio Society Intermediate Course (4) Transmitters

SUBELEMENT T4 [2 Exam Questions - 2 Groups] Amateur radio practices and station setup.

Technician Licensing Class Supplement T4, Questions Only Amateur Radio Practices 2 Exam Questions, 2 Groups.

1 Chelmsford Amateur Radio Society M3 Foundation Licence Course Murray Niman G6JYBSlide Set 8 Repeaters/CTCSS Chelmsford Amateur Radio Society & Essex.

G. West Your First Radio p. 73 Your Computer goes Digital p. 119 Multi-mode Radio Excitement p. 127 Run Some Interference Protection p. 137 G. West Your.

Options for Wide Area Only and Wide Area and Local Area Operations

The ARISS S Band Beacon/Transponder Project. S Band Beacon There is a new S Band beacon and transponder being planned for the ISS-Ham station. This device.

A simple 2 meter repeater. Receives one frequency and retransmits 600 KHz above or below.

THE K5RWK REPEATER THE K5RWK REPEATER HOW IT WORKS By F Cummings, W5LQU August 2009.

Chapter 25: UHV/VHF Operation

Amateur Radio on the International Space Station (ARISS)

Cossor Radios Single and Multi Channel Radios enable voice comms to/from ATC to aircraft.

SDP 11 PDR Team Goeckel Group: Adebayo Adeyemi, Joseph Hayward, Mark Kohls, Simon McAuliffe Advisor: Dennis Goeckel PDR Keeping The Secret.

Polar Loop Transmitter T. Sowlati, D. Rozenblit, R. Pullela, M. Damgaard, E. McCarthy, D. Koh, D. Ripley, F. Balteanu, I. Gheorghe.

Advanced Radio and Radar

1 Mobile Phone Testing using Impedance Tuners Roman Meierer and Steve Dudkiewicz Your Complete Measurement & Modeling Solutions Partner.

T9-1 Chapter 9 – Special Operations VHF and UHF Operation –Repeater Operations, Autopatch and Linking –APRS Operations and Digipeaters –Simplex Operation.

Ron Milione, Ph.D. CETma W2TAP

Technician Licensing Class Your First Radio Section 11.

Club Program for October 2006 By Rick Sohl – K5RIC.

Narrowband Basics For the Wildland Firefighter Community November 11, 2005.

Technician License Course Chapter 6 Communicating with other hams Lesson Plan Module 13: Contact Basics; Band Plans; Making Contacts; Using Repeaters.

System Elements HighPoint Broadband Delivery System Sector 1 Sector 3

An Enhanced/Permanent Amateur Radio Station Proposal L. McFadin, W5DID K. Banke N6IZW

Let’s Use Our Repeater Estes Valley Amateur Radio Club 2014 Composed by: Doug N6UA Arranged by: Dave KBØWVH Composed by: Doug N6UA Arranged by: Dave KBØWVH.

Technician License Course Chapter 5 Amateur Radio Equipment Lesson Plan Module 12: Power Supplies and Batteries & RF Interference (RFI)

Technician License Course Chapter 5 Operating Station Equipment Lesson Plan Module 11: Transmitters, Receivers and Transceivers.

MCARC Repeater – MHz Design & Operation A repeater is an automatically controlled transmitter and receiver that simultaneously transmits what the.

Technician License Course Chapter 6 Communicating with other hams Lesson Plan Module 13: Contact Basics; Band Plans; Making Contacts; Using Repeaters.

The SARA System Ray Semenoff VE6RHS

The Active Circulator Insertion V tr Isolation V ant V rx Specs Insertion Loss < -.5dB Isolation > -15db Frequency > 30 MHz 10W < Power < 50W.

Amateur Radio Repeaters

1 ELE5 COMMUNICATIONS SYSTEMS REVISION NOTES. 2 Generalised System.

The New Ham’s Guide to Repeaters. Topics What is a repeater Why use a repeater Repeater terminology How to use a repeater Making a contact Repeater etiquette.

1 Chelmsford Amateur Radio Society Foundation Licence Course Murray Niman G6JYBSlide Set 8: v1.5, 21-Jan-2009 Repeaters/CTCSS Chelmsford Amateur Radio.

W2UC: Union College Amateur Radio Repeater Union College, Schenectady, NY Department of Electrical Engineering Senior Project Final Presentation Robin.

Modulation What is modulation?

How Does That Work? Crossband Repeating By Paul F. Ryan NØKIA 10 July 2003 © 2003.

Buchanan County Communications Public Safety Radio System Radio Systems 101.

W2UC: Union College Amateur Radio Repeater Union College, Schenectady, NY Department of Electrical and Computer Engineering Steinmetz Symposium Presentation.

FCARC Jan 11,2016. Repeaters FCARC January 11, 2016 Al Woodhull N1AW FCARC operates two repeaters..., one on 2 meters, located at Frizzell Hill in Leyden,

Clint Miller KCØJUO and Paul Cowley KB7VML Story County ARES January 16 th, 2016.

W2UC: Union College RF Repeater for Amateur Use

Building a non-Icom Dstar Repeater

In The Beginning, there was SIMPLEX A B Simplex and Duplex When two stations contact each other using the same frequency for both transmit and.

Fundamentals of Repeaters Marc Tarplee, Ph.D. NCE N4UFP.

Comparing Yaesu’s FTM-400DR/XDR and FTM-100DR

Establishing & Equipping a Station  VHF or UHF station  HF station.

Dynamic Handheld W/L Microphone

Mobile Broadcast and Spectrum Issues (DVB-T) Workshop April 2003

AMATEUR RADIO TRAINING

Cossor Radios Single and Multi Channel Radios enable voice comms to/from ATC to aircraft.

Why Repeaters? Repeaters enable communication between 2 or more radio stations that cannot communicate directly point-to-point.

Introduction to Repeaters

Programming Your Radio

Technician Licensing Class

Technician Licensing Class

Communication Systems.

Presented by Mohamad Haidar, Ph.D. May 13, 2009 Moncton, NB, Canada

A. Talk louder into the microphone B. Let the transceiver cool off

What is a beam antenna? A. An antenna built from aluminum I-beams

A. Linearity B. Sensitivity C. Selectivity

FCARC Jan 11,2016.

What is this thing called DMR ?

Packet Radio Equipment required:

Presentation transcript:

HUB END Hub/Spoke or Star system

Pros – Simple, economical system for a general area. – Short key up time. – End sites utilize simple transceivers rather than full duplex radios with duplexers. – Link repeater can also be used as a normal repeater. – Conserves frequencies for links (only 1 pair used). Cons – Cannot be easily expanded beyond one hop.

TX RX Duplexer Controller Link Com RLC-1 DROP REPEATER TX/RX Half Duplex LINK RADIO SIMPLE END SITE

CONTROLLER – LINK COMM RLC-4 TXRX UHF Duplexer TXRX VHF Duplexer HUB SITE Hub Repeater Drop Repeater Port 1Port 2Port 3Port 4 SPARE

VA6CTV VE6HRB VE6HRA Uplink =144.69cUplink = Uplink Half duplex Down link Full duplex Downlink EXAMPLE CALL THROUGH THE LINK SYSTEM 12

VE6HRA Gladys Ridge

RLC1 Maxtrac Link Mitrek Repeater Sinclair Q2330 Duplexer Astron 35 amp Power supply Battery back up

VE6HRB Nanton

Motorola MSR watt UHF LinkComm RLC4 Controller Motorola MSR watt VHF

VE6HRL Longview

Motorola Mitrek - Rptr Motorola Maxtrac - Link Power Supply LinkComm – RLC1 Sinclair Duplexer Q2330E

Maintenance Considerations Design Considerations Check VSWR: between repeater and duplexer regularly, record/chart. between duplexer and antenna regularly, record/chart. Record voltages and currents of each device. Test run on batteries to determine condition and run time. Record TX power and RX sensitivity, deviation. Check audio deviation pass through between all ports Start with a new Duplexer or one that is known to be like new condition. Use a 6 can Res-Loc or with similar isolation specs for 600KHz VHF. 4 can Res-Loc are adequate for 5MHz UHF offsets. Try to use commercial grade radios with helical resonator front ends. Mobile type radios will most likely require a fan to cool the transmitter. Run at half or less rated power (too low may cause spurious Tx). Use CTCSS tones to prevent interference.