Funding search

Find who already funds work like yours.

Private foundations don’t post open calls, so nobody can search them. We read IRS filings instead — 9.6 million grants from 174,053 foundations and grantmaking charities, searchable by what the money was actually for.

12 funders with a record of paying for “repeater”

Where the money went

1.0×
Chan Zuckerberg Initiative Foundation → United Kingdom Research and Innovation: $1.5M across 1 grant, latest 2023Laura and John Arnold Foundation → Mathematica Inc: $1.2M across 3 grants, latest 2024Bioindustrial Manufacturing and Design → Tandem Repeat Technology Inc: $1.1M across 3 grants, latest 2023The Simons Foundation Inc → Harvard College: $1.0M across 6 grants, latest 2023Gordon E and Betty I Moore Foundation → Regents of the University of California: $750K across 3 grants, latest 2024Carlsen Muir Family Foundation → Improve Your Tomorrow: $284K across 3 grants, latest 2024The William & Flora Hewlett Foundation → Trustees of Princeton University: $255K across 3 grants, latest 2024The Mcknight Endowment Fund for Neuroscience → Yale University: $200K across 2 grants, latest 2024Amateur Radio Digital Communications → Pleasant Valley Amateur Radio Club: $154K across 1 grant, latest 2022Leslie L Alexander Foundation Inc → Rescue Rehome Repeat of So Louisiana: $138K across 2 grants, latest 2024Leon Aland Family Foundation → Birmingham Holocaust Education Center: $37K across 4 grants, latest 2025Karen Alice Nilsen Olsen → Amateur Radio Relay: $8K across 4 grants, latest 2025Chan Zuckerberg Initiative Foundation → Uk Biobank Limited: $909K across 1 grant, latest 2022The Simons Foundation Inc → Harvard University: $327K across 2 grants, latest 2024Amateur Radio Digital Communications → Open Collective Foundation: $150K across 1 grant, latest 2023Leslie L Alexander Foundation Inc → Rescue Rehome Repeat of South Louisiana: $100K across 1 grant, latest 2023Laura and John Arnold Foundation → Arizona State University Foundation for A New American University: $62K across 2 grants, latest 2022Karen Alice Nilsen Olsen → Colorado Connection Repeaters Inc: $3K across 3 grants, latest 2025Chan Zuckerberg Initiative Foundation → Uk Medical Research Council: $438K across 1 grant, latest 2022The Simons Foundation Inc → Stanford University: $180K across 2 grants, latest 2024Amateur Radio Digital Communications → East Tennessee Repeater Association: $143K across 3 grants, latest 2024The Simons Foundation Inc → University of California San Diego: $127K across 1 grant, latest 2022Amateur Radio Digital Communications → Boeing Employee's Amateur Radio Society: $84K across 1 grant, latest 2023Amateur Radio Digital Communications → Ricomu: $83K across 1 grant, latest 2022Amateur Radio Digital Communications → Ece Repeater Group Inc: $79K across 3 grants, latest 2023Amateur Radio Digital Communications → Csuci Amateur Radio Interest Group: $74K across 1 grant, latest 2023Amateur Radio Digital Communications → Radio Amateur Du-of Quebec Inc (On Behalf La Federation Des Clubs Radioamat: $74K across 1 grant, latest 2025Amateur Radio Digital Communications → Community Foundation of the Ozarks Inc: $68K across 1 grant, latest 2023Amateur Radio Digital Communications → Ufb New England: $36K across 1 grant, latest 2025Amateur Radio Digital Communications → Radio Amateur Du-of Quebec Inc (On Behalf of Ares Association Radio Exp: $32K across 1 grant, latest 2025Amateur Radio Digital Communications → Radio Amateur Du-of Quebec Inc (On Behalf of Vallee Du Richelieu Club): $32K across 1 grant, latest 2025Amateur Radio Digital Communications → Milford Amateur Radio Club: $31K across 2 grants, latest 2025Amateur Radio Digital Communications → San Angelo Amateur Radio Club: $31K across 1 grant, latest 2023Amateur Radio Digital Communications → Skyhublink System: $29K across 1 grant, latest 2023Amateur Radio Digital Communications → Western Lake Superior Amateur Responders: $28K across 1 grant, latest 2025Amateur Radio Digital Communications → Hazel Park Amateur Radio Club Inc: $27K across 1 grant, latest 2025Amateur Radio Digital Communications → Bonner County Amateur Radio Club Inc: $26K across 1 grant, latest 2022Amateur Radio Digital Communications → Okaw Valley Amateur Radio Club Inc: $25K across 1 grant, latest 2025Amateur Radio Digital Communications → Valencia County Amateur Radio Association Inc: $25K across 1 grant, latest 2025Amateur Radio Digital Communications → Vrza (Vereniging Van Radio Zendamateurs): $24K across 2 grants, latest 2024Amateur Radio Digital Communications → Irvine Valley College Foundation On Behalf of the Irvine Valley College Ama: $23K across 1 grant, latest 2024Amateur Radio Digital Communications → Salem Amateur Radio Club Inc: $22K across 1 grant, latest 2022Amateur Radio Digital Communications → Radio Amateur Du-of Quebec Inc (On Behalf of La Federation Des Clubs Radioa: $20K across 1 grant, latest 2025Amateur Radio Digital Communications → South Mountain Repeater Association Inc Aka South Mountain Radio Amateurs: $19K across 1 grant, latest 2025Amateur Radio Digital Communications → University of South Florida Foundation Inc: $15K across 1 grant, latest 2022Amateur Radio Digital Communications → Ontario Tech University: $14K across 1 grant, latest 2025Amateur Radio Digital Communications → South Mountain Repeater Association Inc: $13K across 1 grant, latest 2022Amateur Radio Digital Communications → Lehi Amateur Radio Club: $13K across 3 grants, latest 2025Amateur Radio Digital Communications → Kentucky District 7 Amateur Radio Emergency Team Inc: $13K across 1 grant, latest 2022The Simons Foundation Inc → Leland Stanford Junior University: $12K across 1 grant, latest 2022Amateur Radio Digital Communications → Spout Springs Repeater Association: $12K across 1 grant, latest 2022Amateur Radio Digital Communications → Hot Springs Amateur Radio Club: $12K across 1 grant, latest 2025Amateur Radio Digital Communications → St Croix Valley Ares Races Inc: $11K across 1 grant, latest 2025Amateur Radio Digital Communications → Mid-State Amateur Radio Club: $11K across 1 grant, latest 2023Amateur Radio Digital Communications → Lehi Amateur Radio Club (Larc): $11K across 1 grant, latest 2022Amateur Radio Digital Communications → Lake Monroe Amateur Radio Society Inc: $9K across 1 grant, latest 2025Amateur Radio Digital Communications → Trilogy Amateur Radio Club: $9K across 1 grant, latest 2025Amateur Radio Digital Communications → Voice of Idaho Amateur Radio Club Incorporated: $9K across 1 grant, latest 2024Amateur Radio Digital Communications → Northwest Missouri Ares Group: $8K across 1 grant, latest 2023Amateur Radio Digital Communications → Butler County Amateur Fm Association: $7K across 1 grant, latest 2025Amateur Radio Digital Communications → North Middle School: $6K across 1 grant, latest 2024Amateur Radio Digital Communications → Regents of University of Michigan: $5K across 1 grant, latest 2022Amateur Radio Digital Communications → Cibola County Amateur Radio Club of New Mexico Inc: $2K across 1 grant, latest 2022Chan Zuckerberg Initiative Foundation: $2.9M on this topic. Open the funder.Chan Zuckerberg Initiative Fo…$2.9MThe Simons Foundation Inc: $1.6M on this topic. Open the funder.The Simons Foundation Inc$1.6MAmateur Radio Digital Communications: $1.5M on this topic. Open the funder.Amateur Radio Digital Communi…$1.5MLaura and John Arnold Foundation: $1.2M on this topic. Open the funder.Laura and John Arnold Foundat…$1.2MBioindustrial Manufacturing and Design: $1.1M on this topic. Open the funder.Bioindustrial Manufacturing a…$1.1MGordon E and Betty I Moore Foundation: $750K on this topic. Open the funder.Gordon E and Betty I Moore Fo…$750KCarlsen Muir Family Foundation: $284K on this topic. Open the funder.Carlsen Muir Family Foundation$284KThe William & Flora Hewlett Foundation: $255K on this topic. Open the funder.The William & Flora Hewlett F…$255KLeslie L Alexander Foundation Inc: $238K on this topic. Open the funder.Leslie L Alexander Foundation…$238KThe Mcknight Endowment Fund for Neuroscience: $200K on this topic. Open the funder.The Mcknight Endowment Fund f…$200KLeon Aland Family Foundation: $37K on this topic. Open the funder.Leon Aland Family Foundation$37KKaren Alice Nilsen Olsen: $11K on this topic. Open the funder.Karen Alice Nilsen Olsen$11KUnited Kingdom Research and Innovation: received $1.5M on this topicUnited Kingdom Research and Inn…$1.5MMathematica Inc: received $1.2M on this topicMathematica Inc$1.2MTandem Repeat Technology Inc: received $1.1M on this topicTandem Repeat Technology Inc$1.1MHarvard College: received $1.0M on this topicHarvard College$1.0MUk Biobank Limited: received $909K on this topicUk Biobank Limited$909KRegents of the University of California: received $750K on this topicRegents of the University of Ca…$750KUk Medical Research Council: received $438K on this topicUk Medical Research Council$438KHarvard University: received $327K on this topicHarvard University$327KImprove Your Tomorrow: received $284K on this topicImprove Your Tomorrow$284KTrustees of Princeton University: received $255K on this topicTrustees of Princeton University$255KYale University: received $200K on this topicYale University$200KStanford University: received $180K on this topicStanford University$180KPleasant Valley Amateur Radio Club: received $154K on this topicPleasant Valley Amateur Radio C…$154KOpen Collective Foundation: received $150K on this topicOpen Collective Foundation$150KEast Tennessee Repeater Association: received $143K on this topicEast Tennessee Repeater Associa…$143KRescue Rehome Repeat of So Louisiana: received $138K on this topicRescue Rehome Repeat of So Loui…$138KUniversity of California San Diego: received $127K on this topicUniversity of California San Di…$127KRescue Rehome Repeat of South Louisiana: received $100K on this topicRescue Rehome Repeat of South L…$100KBoeing Employee's Amateur Radio Society: received $84K on this topicBoeing Employee's Amateur Radio…$84KRicomu: received $83K on this topicRicomu$83KEce Repeater Group Inc: received $79K on this topicEce Repeater Group Inc$79KCsuci Amateur Radio Interest Group: received $74K on this topicCsuci Amateur Radio Interest Gr…$74KRadio Amateur Du-of Quebec Inc (On Behalf La Federation Des Clubs Radioamat: received $74K on this topicRadio Amateur Du-of Quebec Inc…$74KCommunity Foundation of the Ozarks Inc: received $68K on this topicCommunity Foundation of the Oza…$68KArizona State University Foundation for A New American University: received $62K on this topicArizona State University Founda…$62KBirmingham Holocaust Education Center: received $37K on this topicBirmingham Holocaust Education…$37KUfb New England: received $36K on this topicUfb New England$36KRadio Amateur Du-of Quebec Inc (On Behalf of Ares Association Radio Exp: received $32K on this topicRadio Amateur Du-of Quebec Inc…$32KRadio Amateur Du-of Quebec Inc (On Behalf of Vallee Du Richelieu Club): received $32K on this topicRadio Amateur Du-of Quebec Inc…$32KMilford Amateur Radio Club: received $31K on this topicMilford Amateur Radio Club$31KSan Angelo Amateur Radio Club: received $31K on this topicSan Angelo Amateur Radio Club$31KSkyhublink System: received $29K on this topicSkyhublink System$29KWestern Lake Superior Amateur Responders: received $28K on this topicWestern Lake Superior Amateur R…$28KHazel Park Amateur Radio Club Inc: received $27K on this topicHazel Park Amateur Radio Club I…$27KBonner County Amateur Radio Club Inc: received $26K on this topicBonner County Amateur Radio Clu…$26KOkaw Valley Amateur Radio Club Inc: received $25K on this topicOkaw Valley Amateur Radio Club…$25KValencia County Amateur Radio Association Inc: received $25K on this topicValencia County Amateur Radio A…$25KVrza (Vereniging Van Radio Zendamateurs): received $24K on this topicVrza (Vereniging Van Radio Zend…$24KIrvine Valley College Foundation On Behalf of the Irvine Valley College Ama: received $23K on this topicIrvine Valley College Foundatio…$23KSalem Amateur Radio Club Inc: received $22K on this topicSalem Amateur Radio Club Inc$22KRadio Amateur Du-of Quebec Inc (On Behalf of La Federation Des Clubs Radioa: received $20K on this topicRadio Amateur Du-of Quebec Inc…$20KSouth Mountain Repeater Association Inc Aka South Mountain Radio Amateurs: received $19K on this topicSouth Mountain Repeater Associa…$19KUniversity of South Florida Foundation Inc: received $15K on this topicUniversity of South Florida Fou…$15KOntario Tech University: received $14K on this topicOntario Tech University$14KSouth Mountain Repeater Association Inc: received $13K on this topicSouth Mountain Repeater Associa…$13KLehi Amateur Radio Club: received $13K on this topicLehi Amateur Radio Club$13KKentucky District 7 Amateur Radio Emergency Team Inc: received $13K on this topicKentucky District 7 Amateur Rad…$13KLeland Stanford Junior University: received $12K on this topicLeland Stanford Junior Universi…$12KSpout Springs Repeater Association: received $12K on this topicSpout Springs Repeater Associat…$12KHot Springs Amateur Radio Club: received $12K on this topicHot Springs Amateur Radio Club$12KSt Croix Valley Ares Races Inc: received $11K on this topicSt Croix Valley Ares Races Inc$11KMid-State Amateur Radio Club: received $11K on this topicMid-State Amateur Radio Club$11KLehi Amateur Radio Club (Larc): received $11K on this topicLehi Amateur Radio Club (Larc)$11KLake Monroe Amateur Radio Society Inc: received $9K on this topicLake Monroe Amateur Radio Socie…$9KTrilogy Amateur Radio Club: received $9K on this topicTrilogy Amateur Radio Club$9KVoice of Idaho Amateur Radio Club Incorporated: received $9K on this topicVoice of Idaho Amateur Radio Cl…$9KAmateur Radio Relay: received $8K on this topicAmateur Radio Relay$8KNorthwest Missouri Ares Group: received $8K on this topicNorthwest Missouri Ares Group$8KButler County Amateur Fm Association: received $7K on this topicButler County Amateur Fm Associ…$7KNorth Middle School: received $6K on this topicNorth Middle School$6KRegents of University of Michigan: received $5K on this topicRegents of University of Michig…$5KColorado Connection Repeaters Inc: received $3K on this topicColorado Connection Repeaters I…$3KCibola County Amateur Radio Club of New Mexico Inc: received $2K on this topicCibola County Amateur Radio Clu…$2K
12 funders, 63 recipients, grants matching “repeater” only. Ribbon width is proportional to the total given; each funder has its own colour (smaller funders in gray). Hover a name to isolate its flows, click a funder to open it. Drag to move around; zoom with the buttons, a double-click, or the wheel after clicking the map.

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Source: IRS Form 990-PF Part XV and Form 990 Schedule I, tax years 20192025. These are grants already paid, a record of what an organization funds rather than an open call. Private foundations rarely accept unsolicited applications and the route in is usually a program officer; grantmaking charities and associations more often run real application cycles, so check their website. How this data is built, and its limits →