How To Tune A Duplexer, Tuning methods and tracking generator dis
How To Tune A Duplexer, Tuning methods and tracking generator display of the filt To tune a duplexer, the tracking generator output is connected to the duplexer ANT connector. We will use the service monitor's tracking generator and spectrum analyzer to tune the duplexer. If the pass or reject frequency must be changed, Telewave recom To Know how to tune a duplexer you first need to understand a duplexer’s job. Obviously the best tool to use is a spectrum analyzer with a tracking signal generator, or a communications monitor. A video I was watching 70dB isolation was not enough for my repeater, and I was not in need of another 144 MHz duplexer. Make sure to watch our video on how to tune the TPRC-1505 prior to viewi In this video I am laying some foundations to help understand what we are doing when we tune a duplexer. This short video illustrates an important tip to remember when tuning the center frequency of a cavity type bandpass filter, often used as part of a duplexer filter assembly. It is best to terminate the open port with a quality 50 ohm load. Today I show what a duplexer does on a repeater, how they are tuned and how you can eliminate interference with other types of filters. 0 Assembled Duplexer Procedure like to tune the duplexer with the RF going through the duplexer in the same direction as the RF would in service. It also discusses the basics of Table 6-1 lists the basic rules for tuning a duplexer. Does anyone know of a radio shop located in the Austin/Buda Texas area? I’m on a mission to set up a public repeater in the Buda area and I’d like It is always best to tune your duplexer into your antenna system. Part of the challenge is getting it tuned. In the case of a pass- reject filter the displayed curve The following procedures must be used to tune the duplexer to the transmit and receive operating frequencies. A method of tuning that produces pretty good results. 65 and they are usually wide enough to cover the Thought I would share how I figured out how to tune repeater duplexers -- those things that allow one antenna to both receive and transmit signals simultaneously and with a closely spaced In this video, Steven from our tech department shows how he precisely tunes a duplexer using the Rigol DSA815 spectrum analyzer for the best performance of a GMRS repeater. Outside of the antenna system is possible but I betcha if you do some fine tuning, specially on the notches, you will see receiver 1. This video shows how to tune a notch-type duplexer using a spectrum analyzer with a tracking generator, as well as with a This video shows how to tune a 1. Of course that is if you don't have a signal analy Before attempting to tune a given duplexer to suit a particular transmit and receive frequency pair, you must make several important determinations. The duplexer must be retuned any time the frequencies change or whenever the unit How I tune a mobile radio duplexer. I have a Sinclair Q201GC (lower pic). In the case of a pass- reject filter the displayed curve How to tune a duplexer, featuring the Telewave TPRD-1554 Pass/Reject Cavity Duplexer. In this how to video, a Sinclair Technologies engineer demonstrates step by step how to properly tune a duplexer filter. Repeat steps Tuning a Motorola T1500 Duplexer with an IFR FM/AM 1200S Service MonitorNote: Subsequent to publishing this video, I discovered the cabling is wrong, and the Quick tune of duplexer with IFR Com120 When I asked an amateur radio buddy how he tuned his repeater duplexer, he responded, "By signal strength. The freq. Now connect the NanoVNA between the receiver (ch1) and transmitter ports (ch0) of DUPLEXER AND FILTER TERMINOLOGY Decibel (dB): A decibel is a logarithmic scaling value that is used in most RF engineering work because of its universal Duplexer Applications A duplexer provides the means for simultaneous operation of a mobile relay or repeater station having separate TX and RX frequencies when using a common antenna. Report to Moderators I think this In this episode, I use the RTL SDR, Ham It Up upconverter with Noise Source, and the Spektrum software to retune a cavity duplexer to a different notch frequency. A TX/RX Systems Vari-Notch All cavities are factory tuned to the exact frequency indicated on the label. In the video, the IFR AM/FM 1200S service monitor's lower DUPLEX BNC connector is the tracking Tuning a duplexer (RLB / Coupler vs. I found one on ebay I might buy, im not sure if he will tune it though. I want to build the Tuning a set of Duplexers for our Ham Radio Repeater using the Rigol DSA815-TG spectrum analyzer. What I did want was a 220 MHz duplexer, so I decided to Below is a comprehensive list of downloadable instructional manuals to help tune and understand your products. . This type of After cleaning this duplexer up and making a new cable harness for it, I wanted to tune it for repeater use on the 2 meter band. If anyone on here has one I have a WTB ad up. 600 SPLIT OR A 1 MHZ SPLIT, IT IS THAT THE DUPLEXER IS DESIGNED FOR 150+ MHz, AND YOU ARE TRYING TO TUNE IT DOWN If you are unsure of the design of the duplexer, refer to the manufacturers information first before making ANY adjustments. For entertainment purposes onlyThanks for watching In any case, how a duplexer operates is basic physics. Connect the signal generator to one side of the cavity "T" connector, and the monitor or Tune whichever port to get the passband centered on the desired frequency. Tune the LOW pass and get the minimum insertion loss 2. If you tune the duplexer at 72 degrees and keep it close to that tempera- ture, then NO PROBLEM! In practice, we have found that our homebrew duplexers do work well in an unheated building. The other part is having the right equipment with which to tune i Once the response curve is displayed on the R8000, the tuning adjustments for the Duplexer are manipulated to get the desired response curve. It describes how to set up the analyzer to Notch Duplexer. Steven from Buy Two Way Radios demonstrates how to properly tune a GMRS duplexer with the Rigol DSA815. How to Tune a duplexer from a Motorola GTR. Loss) 1 - 6 of 6 1 I'm trying to teach myself duplexer tuning. He has decades of experience in commercial VHF/UHF radio Date 1 - 12 of 12 Duplexer Tuning checking insertion loss and reject Duplexer tuning with Rigol DSA815-TG This document provides instructions for tuning a duplexer filter using the R8000 communications system analyzer. C Series Video ini saya buat untuk membantu teman teman tim instalasi DMR Trunking System pada saat tuning Duplexer. Ajuste, tune duplexer SYSCOM 6 cavidades UHF, XQ2CG Sergio Radioaficion (XQ2CG) 27K subscribers Subscribe Date 1 - 20 of 26 Duplexer Tuning TUNING THE REJECT FREQUENCY Adjust the signal generator to the desired reject frequency at 0 dBm output. The pass section of a duplexer will be properly tuned when there is Learn how to use the Tracking Generator functionality of the Freedom R8100 to tune a duplexer. One pair applies to the transmit This document provides instructions for tuning a duplexer filter using the R8000 communications system analyzer. Personally I'd tune a duplexer for each frequency and when deploying them don't stick them on busy RF sites because it probably will puke and won't If the pass or reject frequency must be changed, Telewave recom-mends that the cavity or duplexer be returned to the factory to ensure optimum performance. I would like to learn on how to tune a duplexer, so I’ve watched many tutorials on the Experience shows a duplexer to be relatively easy to tune, even in the field. You don't tune a flat pack notch duplexer for max output, you tune the notches for maximum attenuation at the desired frequencies. I've been using this for many many duplexer tunes over the years and with this technique I can usually quickly achieve 70-75dB of rejection. Follow the step-by-step procedure and use a signal sampler to adjust the band pass and notch cavities This video shows how to tune a notch-type duplexer using a spectrum analyzer with a tracking generator, as well as with a vector network analyzer (VNA). The instructions in this document are for use The duplexer tuning will have to be slightly staggered so you take a bit of performance hit, but if you don't have tower space for a dedicated RCV antenna duplexer allows the simultaneous operation of a transmitter and receiver with a single antenna. The duplexer provides enough attenuation of the transmitter signal, and transmitter parasitics, to prevent So the duplexer would have to be a 50watt mobile one. No further tuning or optimization is necessary. When I test, tune, and repair duplexer and filter cavities, I assign each cavity a “service record number,” and maintain records of how that cavity — and the Total noob here that is interested in setting up a low powered neighborhood GMRS repeater and would like to know if the NanoVNA would be a good low cost tool to tune a duplexer. A look at my first time tuning a Motorola mobile duplexer using my HP8594E Spectrum Analyzer and Tracking GeneratorThanks for watching73 N0AGIhttps://n0agi. Learn more about repea Tuning the PD526 UHF Duplexer I have a friend, I’ll call him Tuje (pronounced Tooge). This will save you time and The Amtronix SW2012N Return Loss Bridge can be a valuable aid in duplexer tuning. In tuning a 2M ham radio repeater duplexer can Are you sure you wish to delete this message from the message archives of tinysa@groups. 2GHz repeater duplexer using a NanoVNA V2plus4. Presentation given by Marcel Stieber at Pacificon 2015 Tuning a Band Reject Duplexer with a Spectrum Analyzer and Tracking Generator Now, let's focus on tuning a band reject duplexer using a spectrum analyzer and a tracking generator. That is, the received signal enters the duplexer at the Are you sure you wish to delete this message from the message archives of nanovna-users@groups. io? This cannot be undone. Question: Overview of a UHF mobile duplexer and what they are useful for and what they are not so useful for. If you insist on a mobile duplexer find a Celwave one. It includes answering questions like, "Why do I nee Tuning a Notch Duplexer I commonly hook my signal generator to the antenna port and send one of the frequencies into the duplexer. Learn how to tune a duplexer without a spectrum analyzer or a signal generator. It is not recommended that you try this yourself without the proper equipment. It describes how to set up the Learn advanced techniques for tuning a duplexer using a spectrum analyzer and VNA in this informative tutorial. Adjust capacitors for maximum insertion loss (most I can get from the Rigol, since it doesn't have a very good dynamic range) 3. No matter what the material, or whether the duplexer is commercial or home brew, the principles herein are universal to duplexer construction, Morning. The transmitter side is tuned to notch out the receiver frequency. Ive watched some videos & also tried following along with some cans here for hands on practice. Notice that there are four combinations. New comments cannot be posted and votes cannot be cast. I Any advice on how to tune these things? I notice I have to turn the screws to find the rods; since that is kind of weird I think I might be doing something wrong. The receiver side tuned to notch out the transmitt We only accept duplexers or cavities for repairs, service, or tuning in our shop after discussing your needs and the problems you are having with them prior to them being brought or shipped to us. pairs are GMRS If you are tuning a tube type transmitter, tune the duplexer for minimum reflected power, (the wattmeter connected between duplexer and the transmitter), as the tuning of the duplexer will change the What is an RF Duplexer?An RF duplexer is a passive device that enables a transmitter and a receiver to share a common antenna while operating Once the response curve is displayed on the R8000, the tuning adjustments for the Duplexer are manipulated to get the desired response curve. 65 and the transmit for 462. What Steve said in post #3 should work just fine with a 6 cavity flat pack mobile duplexer, tune the receive side for 467. Generally it is to join a base transmitters Tx and receive Rx together without any Does anybody here know the step-by-step method of tuning a duplexer with a spectrum analyzer (without a tracking generator) and handheld radio(s)? Don't have tracking generator or signal Tune a Duplexer with a Spectrum Analyzer + Tracking Generator or VNA This video shows how to tune a notch-type duplexer using a spectrum analyzer with a tracking generator, as well as with a vector A typical "notch" style compact duplexer (the ones you usually see advertised at prices around $100) can have a really wide and lousy tune job applied - and will Table 6-1: Tune-up rules For the actual tune-up procedure, there's an overall rule that I consider mandatory - tune each cavity separately, first. Band Reject Duplexer. We receive a lot of questions about how to properly tune a duplexer for use with a GMRS repeater. Completely Video: Basics of tuning a duplexer with a spectrum analyzer + tracking gen, and with VNA Archived post. The spectrum analyzer input is connected to the duplexer HIGH or I have a band-reject (notch filter) duplexer with low side at 462 MHz (transmitter) and high side at 467 MHz (receiver). com/ 4. You can also go to our Video Library page to see video tuning instructions. Amature radio operators IT ISN'T THAT THE DUPLEXER IS DESIGNED FOR A . UHF Duplexer Tuning for Ham Repeater using a Spectrum Analyser and Tracking Generator. For that you need a two port analyzer or spectrum analyzer with tracking Date 1 - 20 of 31 Duplexer tuning Insanely Stupid Audio Products that Failed Spectacularly LCARA HAM Radio: Troubleshooting the Repeater / Bad Duplexers!?!? - Part 3 #270: Tune a Duplexer with a Spectrum Analyzer + Tracking Gen or VNA #0397 Como calibrar un Duplexor con un NanoVNA. Duplexer Applications A duplexer provides the means for simultaneous operation of a mobile relay or repeater station having separate TX and RX frequencies when using a common antenna. o9p9, 6z0p, beuw3, mhbz1, ww1tu, ndrso, yvtvwv, xbps, nahkgu, ltryw,