{"product_id":"vhf-bandpass-filter-fm-broadcast-airband-88-118-mhz","title":"VHF Bandpass Filter for FM Broadcast and Airband (88–118 MHz, 100 MHz Center)","description":"\u003ch2 data-sourcepos=\"12:1-12:18;375-392\" class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003ePRODUCT OVERVIEW\u003c\/h2\u003e\n\u003cp data-sourcepos=\"14:1-14:624;394-1017\" class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eThe FM broadcast band (88–108 MHz) and the lower VHF airband (108–118 MHz) occupy one of the busiest and most interference-prone regions in the radio spectrum. AM broadcast transmitters below 30 MHz, shortwave stations, paging systems, and an increasingly crowded VHF environment above 130 MHz all compete for the dynamic range of any wideband receiver tuned to this region.\u003c\/p\u003e\n\u003cp data-sourcepos=\"14:1-14:624;394-1017\" class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eA filter centered at 100 MHz and covering the 88 to 118 MHz window passes these signals cleanly while attenuating everything outside it, protecting your receiver's front end from the strongest and most common interference sources in the VHF region.\u003c\/p\u003e\n\u003cp data-sourcepos=\"16:1-16:441;1019-1459\" class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eInsertion loss at 100 MHz is 2.5 dB. The passband spans roughly 88 to 118 MHz, covering the full FM broadcast allocation and the lower portion of the VHF aeronautical band in a single part. Signals below 78 MHz are attenuated by 10 dB or more, rejection increases progressively above 120 MHz, reaching approximately 28 dB at 200 MHz. Maximum RF input is +30 dBm (1 Watt), high enough for transmit-path use as well as receive-path filtering.\u003c\/p\u003e\n\u003cp data-sourcepos=\"18:1-18:77;1461-1537\" class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eOperating range is -40°C to +85°C. The filter is passive and draws no power.\u003c\/p\u003e\n\u003ch2 data-sourcepos=\"22:1-22:14;1544-1557\" class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eAPPLICATIONS:\u003c\/h2\u003e\n\u003cul data-sourcepos=\"24:1-29:109;1559-2335\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli data-sourcepos=\"24:1-24:184;1559-1742\" class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eSDR and software-defined radio setups tuned to the FM broadcast or VHF airband range, particularly with wideband dongles that admit significant out-of-band content without filtering\u003c\/li\u003e\n\u003cli data-sourcepos=\"25:1-25:132;1743-1874\" class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eFM broadcast reception systems requiring rejection of AM broadcast, HF, and other sub-88 MHz content ahead of the receiver or LNA\u003c\/li\u003e\n\u003cli data-sourcepos=\"26:1-26:56;1875-1930\" class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eVHF spectrum monitoring covering the 88–118 MHz range\u003c\/li\u003e\n\u003cli data-sourcepos=\"27:1-27:220;1931-2150\" class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e100 MHz reference signal cleanup: signal generators and frequency reference oscillators commonly output at 100 MHz; this filter attenuates harmonics and spurious outputs before the reference feeds downstream equipment\u003c\/li\u003e\n\u003cli data-sourcepos=\"28:1-28:76;2151-2226\" class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eHam radio and amateur VHF work near the FM broadcast and lower VHF region\u003c\/li\u003e\n\u003cli data-sourcepos=\"29:1-29:109;2227-2335\" class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eRF test bench setups requiring a clean 100 MHz bandpass characteristic for characterization or calibration\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-sourcepos=\"33:1-33:19;2342-2360\" class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cbr\u003e\u003c\/h2\u003e\n\u003ch2 data-sourcepos=\"33:1-33:19;2342-2360\" class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eATTENUATION TABLE\u003c\/h2\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv data-sourcepos=\"35:1-47:20;2362-2639\" class=\"overflow-x-auto w-full px-2 mb-6\"\u003e\n\u003ctable class=\"min-w-full border-collapse text-sm leading-[1.7] whitespace-normal\" style=\"width: 100%; height: 293.906px;\"\u003e\n\u003cthead class=\"text-left\"\u003e\n\u003ctr style=\"height: 24.4922px;\"\u003e\n\u003cth class=\"text-text-100 border-b-0.5 border-[hsl(var(--border-300)\/0.6)] py-2 pr-4 align-top font-bold\" scope=\"col\" style=\"width: 45.0869%; height: 24.4922px;\"\u003eFrequency\u003c\/th\u003e\n\u003cth class=\"text-text-100 border-b-0.5 border-[hsl(var(--border-300)\/0.6)] py-2 pr-4 align-top font-bold\" scope=\"col\" style=\"width: 52.4078%; height: 24.4922px;\"\u003eAttenuation\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 24.4922px;\"\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\" style=\"width: 45.0869%; height: 24.4922px;\"\u003e50 MHz\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\" style=\"width: 52.4078%; height: 24.4922px; text-align: center;\"\u003e\u0026gt;20 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 24.4922px;\"\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\" style=\"width: 45.0869%; height: 24.4922px;\"\u003e78 MHz\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\" style=\"width: 52.4078%; height: 24.4922px; text-align: center;\"\u003e10 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 24.4922px;\"\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\" style=\"width: 45.0869%; height: 24.4922px;\"\u003e88 MHz\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\" style=\"width: 52.4078%; height: 24.4922px; text-align: center;\"\u003e4 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 24.4922px;\"\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\" style=\"width: 45.0869%; height: 24.4922px;\"\u003e100 MHz (center)\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\" style=\"width: 52.4078%; height: 24.4922px; text-align: center;\"\u003e2.5 dB insertion loss\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 24.4922px;\"\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\" style=\"width: 45.0869%; height: 24.4922px;\"\u003e120 MHz\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\" style=\"width: 52.4078%; height: 24.4922px; text-align: center;\"\u003e4 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 24.4922px;\"\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\" style=\"width: 45.0869%; height: 24.4922px;\"\u003e130 MHz\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\" style=\"width: 52.4078%; height: 24.4922px; text-align: center;\"\u003e8 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 24.4922px;\"\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\" style=\"width: 45.0869%; height: 24.4922px;\"\u003e140 MHz\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\" style=\"width: 52.4078%; height: 24.4922px; text-align: center;\"\u003e13 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 24.4922px;\"\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\" style=\"width: 45.0869%; height: 24.4922px;\"\u003e150 MHz\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\" style=\"width: 52.4078%; height: 24.4922px; text-align: center;\"\u003e17 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 24.4922px;\"\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\" style=\"width: 45.0869%; height: 24.4922px;\"\u003e160 MHz\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\" style=\"width: 52.4078%; height: 24.4922px; text-align: center;\"\u003e20 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 24.4922px;\"\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\" style=\"width: 45.0869%; height: 24.4922px;\"\u003e170 MHz\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\" style=\"width: 52.4078%; height: 24.4922px; text-align: center;\"\u003e22 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 24.4922px;\"\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\" style=\"width: 45.0869%; height: 24.4922px;\"\u003e200 MHz\u003c\/td\u003e\n\u003ctd class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\" style=\"width: 52.4078%; height: 24.4922px; text-align: center;\"\u003e28 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp data-sourcepos=\"49:1-49:432;2641-3072\" class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e \u003c\/p\u003e\n\u003cp data-sourcepos=\"49:1-49:432;2641-3072\" class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp data-sourcepos=\"53:1-53:7;3079-3085\" class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eNOTES:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-sourcepos=\"55:1-58:40;3087-3226\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli data-sourcepos=\"55:1-55:34;3087-3120\" class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eSMA-F PCB edge mount connectors\u003c\/li\u003e\n\u003cli data-sourcepos=\"56:1-56:37;3121-3157\" class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eMaximum RF input: +30 dBm (1 Watt)\u003c\/li\u003e\n\u003cli data-sourcepos=\"57:1-57:29;3158-3186\" class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003ePassive, no power required\u003c\/li\u003e\n\u003cli data-sourcepos=\"58:1-58:40;3187-3226\" class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eOperating temperature: -40°C to +85°C\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-sourcepos=\"60:1-60:222;3228-3449\" class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eFor receive-only applications, placing an LNA ahead of this filter establishes your system noise figure before the filter's insertion loss reduces the signal. See our \u003ca href=\"https:\/\/gpio.com\/collections\/low-noise-amplifiers\"\u003eLow Noise Amplifiers\u003c\/a\u003e for compatible front-end options.\u003c\/p\u003e\n\u003cp data-sourcepos=\"62:1-62:259;3451-3709\" class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eIf you need a similar filter optimised for a different center frequency or with tighter rolloff than this part provides, see our \u003ca href=\"https:\/\/gpio.com\/pages\/custom-rf-module-development\"\u003eCustom RF Module Development page\u003c\/a\u003e. We regularly develop custom VHF and UHF filters for specific bands and rejection requirements.\u003c\/p\u003e\n\u003cp style=\"font-weight: 400;\"\u003e \u003c\/p\u003e\n\u003cp style=\"font-weight: 400;\"\u003e \u003c\/p\u003e\n\u003cp style=\"font-weight: 400;\"\u003e \u003c\/p\u003e","brand":"GPIO LABS","offers":[{"title":"Default Title","offer_id":71800925093910,"sku":null,"price":54.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1963\/0387\/products\/IMG_20200521_162245.jpg?v=1590163543","url":"https:\/\/gpio.com\/products\/vhf-bandpass-filter-fm-broadcast-airband-88-118-mhz","provider":"GPIO LABS","version":"1.0","type":"link"}