Question. Can I transmit into the receive port of a duplexer? Answer. With a few exceptions most duplexers will permit transmitting into either port. Many units are . Duplexers are used to simultaneously transmit and receive from a single antenna . They are three-port devices comprising a combination of transmit and. A collection of duplexer specifications. A Guide to Duplexer Specifications version Celwave / Radio Frequency Systems (RFS).
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A complete conversion, expansion, and overhaul job such as the ones described here, commonly involves between 15 to 20 hours of labor, plus. It is important to verify that any unit has the proper length harness cables for the frequencies to which it will be tuned, as most duplexers will not meet their published specifications with the wrong cables or the wrong length cables.
Anything other than that means the set definitely needs to be converted. It has the factory original harness intact with no modifications. This tower leg was opposite the side of the force of the top, front guy wire being pulled by the bushhog. Each cavity is then individually performance tested, followed by connecting each branch as a set and testing it, and finally the entire harness is secured and the entire set undergoes its final tuning and performance testing.
The client gets a complete report of the testing, including the network analyzer graphs showing proof of performance. We will not be the least bit surprised to get a call at any moment letting us know the tower has completely failed.
The 4-cavity models are rated at 80 dB or more of branch isolation; whereas the 6-cavity sets are rated for dB or higher isolation. If anyone has a translation list or chart even just a few model numbers we’d love to offer it here. Very often we deal with duplexers sent to the DuplexerRepair.
We also would not be surprised to hear that it damaged the utility lines and quite possibly the utility pole nearest the tower and caused interruption of utilities for a lot of folks in the area. There was some problem connecting to server. Not open for further replies. Well that’s strange, I posted an update on this yesterday along with a ham-to-ham reference and my post from here is missing. Earlier this week, we had to go and do a little forensic inspection of a tower which was severely damaged by an electric company bushhog operator who was cutting and clearing the right-of-way.
Your name or email address: Buyer responsible for inspecting the items before placing bids, and prompt item removal within ten 10 business days after receipt of invoice. They are great systems — built like tanks and extremely reliable.
Contact us or call x Depending on your budget, location, skills, and available resources, the following options are available for converting a set to a -B model:.
If you are still not sure, there are two dead giveaways that your set needs conversion:. As can be seen in these photos showing the plungers before and after the application of some TLC, the difference is more than visible. After you receive the invoice, you will have five 5 business days to get your payment mailed to our office, or your account will be suspended, and the item will be awarded to the backup-bidder, or re-listed. Station and mobile duplexers are included.
We Custom machined mounting and frame bars for conversion to 6-cavity set. In addition, an SWR alarm LED turns on, which remains lit until a momentary contact button is pressed, resetting the alarm condition. We had a few of their Power Dupleser panels sitting around, but despite much searching, nobody seems to have the documentation, schematics, wiring diagrams, etc. When you get the loop enclosures back, just install them on the proper cavities with the proper cables and have someone tune them for you or do it yourself, if you have the proper equipment and skills.
It is anticipated that erection of the new tower will take about ten days. Please contact Rodney Renwich at Obviously, if it falls in the direction it is leaning, there is a high likelihood it will fall across the utility lines and the roadway. This tower is only about 50 feet from the utility lines running parallel to the road.
W2GLDFeb 5, Tuning Dupkexer Removal, Inspection, and Polishing After disassembly of the old cavities, one of the many steps in the overhaul and conversion process involves getting the tuning plungers back in udplexer Aged, oxidized tuning plungers BEFORE cleaning and polishing. Depending on your budget, location, skills, and available resources, the following options are available for converting a set to a -B model: Payment will be due immediately upon notification of seller approval by email invoice, after the Seller approves the bids.
The guy wires are old and extremely rusted and six of the original nine guys have broken.
Action Communications: UHF Mhz Duplexers
The End Results A complete conversion, expansion, and overhaul job such as the ones described here, commonly involves between 15 to 20 hours of labor, plus With Screenshot of the online telemetry as it appeared during an intentionally created high SWR event transmission line disconnected.
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This is actually a delicate process, as these capacitors do not tolerate xelwave heat. This unit was sent to EMR Corp in November and checked out top to bottom, factory tuned to my frequency, paperwork will be provided to the purchaser.
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