Motorola Rf Duplexer 380-403// 381/2.7 Mhz Cf1/bw1/ 391/2.4 Mhz Cf2/bw2 150 Watt

US $52

Sunnyvale, California, United States
May 31st

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All items in Telenochek RF store are categorized with extensive detailed categories to simplify searching through the items. Be sure to take advantage of the categories! For sale is: RF, microwave, duplexer / diplexer in good working condition, tested with data. Please see pictures and data table. This is a "380-403" duplexer, in other words it be tuned over the range, but does not cover it simultaneously. These duplexers were intended for use on Motorola GTR 8000 base radio products. The bandwidth is only ~2.5MHz. The three low band cavities are typically chained together to obtain >100dB rejection, as are the three upper band cavities. The recommended cables are ultra low loss (e.g. LMR-240). Each of the cavities is currently tuned for <0.5dB insertion loss and 35-40 dB reject of unwanted band. We can retune the cavities to your desired pair of frequencies (again < 0.5dB loss, and 35-40dB reject each). Additional charges for retuning apply. **Every individual item is tested prior to shipment** Common types of duplexers: Duplexers typically come in two types, bandpass / bandpass, and lowpass / highpass. Other types are less common. In cellular applications uplink / downlink duplexers are typically bandpass / bandpass, due to high isolation required between transmit and receive. In LTE C/A downlink carrier aggregation, lowpass / highpass are common as the aggregated spectrum typically (not always) is sufficiently far apart in frequency. In dual band WiFi where 2.4GHz and 5GHz signals share antennas, high pass and low pass duplexers are common since 2.4 GHz and 5 GHz are far apart in frequency, although the 2.4 GHz and 5 GHz paths will have their individual bandpass filters as well, in addition to the lowpass/highpass WiFi duplexer. Common uses of duplexers in the field and in the lab: Case 1: Duplexing The RF system has separate paths at different frequencies (e.g. TX vs RX) and must share common antenna. Duplexer is used to enabled both paths share a common port. Case 2: Un-duplexing The RF system is already duplexed on to a common antenna port. For example your DUT is a commercial cellphone. You need to test receive without being compressed by the transmit on the same RF path. The RF paths can be simply separated by a duplexer. Case 2a: specific cellular test case By inserting a pair of duplexers between the UE / handset and LTE basestation, the RX and TX can be completely separated for test. This allows tweaking the propagation channel for DL / UL or both, receiver testing without interference from TX, or transmitter EVM measurements. Item data: Type Duplexer Manufacturer Celwave Seller SKU TMRF_3T25 Port 1 N(f) Port 2 N(f) Port 3 N(f) Power handling ( Watt CW) 150 Watt CW For high power testing - we can provide s-parameter sweeps before and after applying high RF power (currently up to 200 Watt RF CW depending on frequency). Please inquire if interested in high power. Band 1 Specs Insertion Loss Band 1(dB) -0.30 Center Frequency Band 1(MHz) 380.85 1dB Pass Bandwidth Band 1 (MHz) 2.70 1dB Pass Low Frequency Band 1 (MHz) 379.50 1dB Pass High Frequency Band 1 (MHz) 382.20 Band 2 Specs Insertion Loss Band 2(dB) -0.40 Center Frequency Band 2(MHz) 391.40 1dB Pass Bandwidth Band 2 (MHz) 2.40 1dB Pass Low Frequency Band 2 (MHz) 390.20 1dB Pass High Frequency Band 2 (MHz) 392.60 Isolation Specs Isolation at Band 1 frequencies (dB) -22dB to -38dB (isolation measurements may be limited by noise floor of test setup, please ask seller for VNA measurements if higher rejection is required) Isolation at Band 2 frequencies (dB) -28dB to -40dB (isolation measurements may be limited by noise floor of test setup, please ask seller for VNA measurements if higher rejection is required) Shipping: We always pack with care to ensure your item arrives safely in original condition. To lower your shipping costs, we can combine shipping for items purchased within several days. International shipping: We ship internationally. An international shipping estimate calculated by eBay is only an estimate. International customers please contact the seller for shipping price before bidding or purchasing. Buyer is responsible for all extra fees associated with international shipping, such as import and customs duties. Return policy: We work with our customers to resolve any issues they might have. Majority of our items have been professionally tested. Any known problems with components, equipment etc... will be noted in the item description. Do you see an error in the listing? We try our best to provide accurate information and technical measurements. However, sometimes errors happen in the technical descriptions, pictures or data. Please let us know if you notice any discrepancies. Thanks! Thank you for your interest! Questions are invited! Please check out our store for similar items Additional search keywords: band pass filter, BPF , bandpass filter, RF, microwave, MHz, GHz, broadband , wideband, megahertz, gigahertz, duplexer, multiplexer, diplexer, revision: 1.5 inventory: PWR4_cat Powered by eBay Turbo Lister The free listing tool. List your items fast and easy and manage your active items.