Use vna to tune duplexer. Bought it with the radios from buytwowayradios. Date 1 - 12 of 12 ...
Use vna to tune duplexer. Bought it with the radios from buytwowayradios. Date 1 - 12 of 12 Duplexer Tuning nanovna-users@groups. It uses a smaller VNA than he has, but the basics are pretty much the same. Even two channel hybrid combiners are salty used. Sorry but I could not find the original poster of the question about being able to do this. Nov 15, 2023 · I have a band-reject (notch filter) duplexer with low side at 462 MHz (transmitter) and high side at 467 MHz (receiver). Use a good, one piece DC grounded antenna. Dec 7, 2022 · I think he is trying to tune a duplexer. I live in Calif i think i sent to a Florida address. This is a tutorial on howto tune a basic notch type, mobile duplexer using a Siglent VNA. The above video is as step by step as i could find. Video: Basics of tuning a duplexer with a spectrum analyzer + tracking gen, and with VNA Archived post. New comments cannot be posted and votes cannot be cast. Nov 10, 2019 · Date 1 - 20 of 20 Duplexfilter tuning question nanovna-users@groups. Rough tuning can be done with the NanoVNA but fine tuning the notches is best done with the actual repeater receiver. Overall it took about 8 days to and from at a $60 buck fee. I guess I need to find a VNA and see if its tuned correctly. Tune whichever port to get the passband centered on the desired frequency. I would like to learn on how to tune a duplexer, so I’ve watched many tutorials on the use of a VNA. The down side is the cost of a combiner. Jan 2, 2024 · Learn advanced techniques for tuning a duplexer using a spectrum analyzer and VNA in this informative tutorial. For proper results and tuning, a vector network Analyser is preferred commonly called a VNA because it includes VSWR readings at the same time. made for GMRS repeaters. To rough tune, use the s21 measurement. There are people that advertise on Ebay offering Duplexer service as well, fees are about the same. io Topics duplexer Date 1 - 9 of 9 Feb 19, 2024 · 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 and a rcv multicoupler with a pre-selector, it could work. Ended up sending the Duplexer to BuyTwoWayRadios. I'v always had good luck A method of tuning that produces pretty good results. If you still have desense in your system and the desense is constant, then find a spectrum analyzer, return loss bridge (or VNA) and tune the duplexer by the factory procedure. Now connect Dec 13, 2024 · I tried to tune one myself using a Nano VNA and watching on line videos. Jul 21, 2020 · Equipment needed to tune a duplexer properly Generally the minimum you should have to tune a duplexer is a spectrum analyser with a tracking generator. Connect the source port (ch0) to the antenna of the duplexer and the detector port (ch1) to either the receiver or transmitter port of the duplexer. Here's another that I think is a little more straightforward. Someone had asked about using the NanoVNA for duplexer tuning. io Topics duplexer Date 1 - 9 of 9 Video: Basics of tuning a duplexer with a spectrum analyzer + tracking gen, and with VNA Archived post. com. Don't use LMR-400 (or any LMR cable) for feed line. It didn't go very well . com . In this tutorial I show how to tune the curves, understand the retu Jun 27, 2025 · Proper tuning of an RF duplexer is essential to ensure high-quality performance in any system where shared antennas and simultaneous transmit/receive operation are required. Aug 7, 2021 · Its an XLT DP-GMRS-50 duplexer. . mbm ypg dmf gqz buq muv ppv fav rnu tzn xof ite gnv vsk qlm
