{"product_id":"bird-txrx-systems-series-notch-cavity-filter-20-37-05-144-174-mhz","title":"Bird\/TxRx Systems Series Notch Cavity Filter 20-37-05 144-174 MHz","description":"\u003cp\u003eCommonly used in T-Pass Combiners, Preselector Filters. It is used to protect the receiver from transmitters 50 kHz - 1 MHz away\u003c\/p\u003e\u003cp\u003eFrequency Range 144-174 MHz\u003c\/p\u003e\u003cp\u003eInsertion Loss – 0.2-2.0 dB (see Spec Sheet Graph)\u003c\/p\u003e\u003cp\u003eAttenuation – 0.2-20 dB (See Graph)\u003c\/p\u003e\u003cp\u003ePower Rating – 270 Watts (See Spec sheet)\u003c\/p\u003e\u003cp\u003eConnectors – N Type Female\u003c\/p\u003e\u003cp\u003eMounting method – Varies (ask about straps)\u003c\/p\u003e\u003cp\u003eVSWR - 1.5:1\u003c\/p\u003e\u003cp\u003eDimensions (HxWxD - inches)– 26” x 10” x 10”\u003c\/p\u003e\u003cp\u003eAsk about our tuning services! If you have a TxRx Design let us build it!\u003c\/p\u003e\u003cp\u003eFree programming is available. If you have any questions, please contact us. Office Hours: (M-F 8 am-4 pm) MST.  \u003c\/p\u003e","brand":"TxRx Bird","offers":[{"title":"Default Title","offer_id":44318554882099,"sku":"20-37-05","price":420.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0646\/5647\/4163\/files\/screenshot-2025-07-22-145532.png?v=1778866442","url":"https:\/\/used-radios.com\/products\/bird-txrx-systems-series-notch-cavity-filter-20-37-05-144-174-mhz","provider":"Used Radios","version":"1.0","type":"link"}