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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This is not a complete technical reference. W2GLDFeb 5, udplexer There was some problem connecting to server. 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. Doing so involves a fair amount of time and work, including total overhaul of each cavity, custom manufacturing of the correct length loops, capacitor duplwxer, and the building of a new frame for the expanded 6-cavity set, not to mention final tuning and performance testing.

The tower owner could tell that the site and utility right-of-way had just been cut, and he and the deputy finally made contact with the equipment operator who admitted he had struck the guy hardware, causing the tower collapse. This capacitor had failed, causing the set set to be taken out of service. All sales are final. Please contact Rodney Renwich at After disassembly of the old cavities, one of the many steps in the overhaul and conversion process involves getting the tuning plungers back in good.

Interested parties, please email me directly at: Well worth the investment of time, money, and energy. 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.

  EN 61310-1 PDF

Seller celwaev NOT responsible for providing tools or heavy equipment to aid in removal.

Depending on your budget, location, skills, and available resources, the following options are available for converting a set to a -B model: Herein lies the catch: This guide will be updated periodically as additional information becomes available.

However, it is always advisable to check the unit’s specifications for more information. Models that appear to be suitable for operation on amateur radio frequencies and at typical “ham split” frequency seperation are identified in the list below by HAM after the model number. It is also bowing and leaning very badly. This really is an excellent duplexer for a CM repeater.

Fri, December 28 – Mon, January This generation of the project utilizes an Ethernet shield running on an Arduino Mega development board.

Where information on band splits is known, it is reflected in this guide. During the installation of the new, replacement loops of proper dimensions for 2-Meter operation, we also replace the trimmer capacitors.

Celwave Duplexer

With all the components overhauled and reassembled using the new frame and mounting rails, each cable, Tee-connector, etc.

The same two tuning plungers after careful cleaning and polishing. Payment will be due immediately upon notification of seller approval by email invoice, after the Seller approves the bids.

Two of the three front guys have been broken for quite some time, and you can see the extremely rusted condition of the guy wires in this photo. Sign up for our auction bulletin now. Our DB and DB Station and mobile celsave are included.


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We have been monitoring the status of a tower in a community south of Opelika which was supposed to have been taken down a while back. Basic specifications are given for each unit. If anyone has a translation list or chart even just a celwxve model numbers we’d love to offer it here.

Filters & Duplexers

Note that we highly emphasize the soldering skills issue, here, because the precision trimmer capacitors used in these duplexers are extremely sensitive to heat — including too much heat during soldering.

Your name or email address: Page last refreshed Mon, Dec 31, 9: Page 1 Page 2 Next page. We start with high quality, mil duplexed and carefully cut, shape, drill, and polish the replacement loops. We Custom machined mounting and frame bars for conversion to 6-cavity set. Our moderators review every post in this forum and will flag or delete those that do not conform.

WISCO International (CELWAVE – Duplexers Specifications)

Item sold as-is, where-is, with no warranty written or implied. Click on any picture to see a larger image. Register cellwave a free QRZ account. Items left on seller’s premises after this removal deadline will revert back to possession of the seller, with no refund.

And, if so, why? Screenshot of the online telemetry as it appeared during an intentionally created high SWR event transmission line disconnected.