Northern California DX Foundation
The Northern California DX Foundation is a private foundation based in Cupertino, California. It provides financial support for amateur radio projects that advance education, science, and international goodwill, including well-designed DXpeditions to rare or unusual locations.
Northern California DX Foundation at a glance
In short: Northern California DX Foundation gave $241K across 11 grants in 2025 (avg $22K), top state Georgia. Source: 2025 IRS Form 990-PF.
- Annual giving (2025)
- $241,233
- +46.0% vs 2024
- Grants made (2025)
- 11
- -38.9% vs 2024
- Average grant
- $21,930
- +138.8% vs 2024
- Median grant
- $8,000
- Total assets
- $1,712,037
- -0.0% vs 2024
- Primary geography
- Georgia (7% of itemized 2025 grant dollars)
- Latest 990 filing
- Form 990-PF, 2025 View filing
Data from IRS Form 990-PF, 2025; updated October 2026.
How to apply to Northern California DX Foundation
- How to Apply
-
The 2025 filing says applicants should contact Donald Greenbaum and submit a special-format application with a complete description of the program. It states that there are no deadlines and no restrictions on awards.
- Contact
Application contact: Donald Greenbaum
Mailing address: 27 Pill Hill Lane, Duxbury, MA 02332
Phone: (781) 424-5928
Email: don@aurumtel.com
Website: https://www.ncdxf.org
Application details from Grantable's research on the foundation's public materials; confirm on its website before applying.
Open Grants
1 open opportunity from Northern California DX Foundation
Who Northern California DX Foundation funds
How this funder distributes its grants
Top Recipients
Top 10 recipients in 2025
The largest 2025 recipient was Delta Xray Group ($166K). Together the top 10 received $240K.
Grant Size Distribution
59 grants across all recorded years
The most common grant size was under $50K: 56 grants of 59 (95%).
Geographic Focus
Where this funder awards grants
The 2025 filing reports that 87% of grant dollars went to recipients with no U.S. state recorded on the filing. It lists 7% for Georgia, 3% for Kentucky, 2% for Oregon, and 1% for Pennsylvania.
Grant Distribution by State
Share of 2025 grant dollars across all 11 itemized grants.
States
Cities
How Northern California DX Foundation gives
Estimate from itemized grant lists in IRS Form 990-PF filings (2025). Recipient names are matched across years, so a renamed or misspelled grantee can look new; grants to individuals are left out. Methodology.
Giving History
Giving Over Time
Total grant dollars and number of grants per year
From 2020 to 2025, annual grant giving ranged from $6K (2020) to $241K (2025). In 2025 it made 11 grants totaling $241K.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Delta Xray Group | GRANT | $165,500 |
| Latvian Radiosport Federation | GRANT | $20,000 |
| Pacific Islands DX Group Morganton, GA | Scientific Research | $18,000 |
| Leon Hellmich | GRANT | $10,000 |
| Michael John Wells | GRANT | $8,698 |
| Electronic Applications Radio Serv Union, KY | Yourth Camp | $8,000 |
| Hannah Rosenfeld Eugene, OR | GRANT | $4,500 |
| Mediterraneo DX Club | GRANT | $2,005 |
| Radio Club De Provins | GRANT | $2,000 |
| Contest University Inc West Middlesex, PA | REWARD | $1,530 |
Ready to take the next step with Northern California DX Foundation?
Financial History
Multi-year comparison from IRS filings
| Filing year | Total Assets | Revenue | Expenses | Grants paid | Grants | Qualifying Distributions | Net Investment Income |
|---|---|---|---|---|---|---|---|
| 2025 | $1,712,037 | $247,135 | $271,209 | $241,233 | 11 | $260,727 | $137,018 |
| 2024 | $1,712,107 | $229,363 | $193,741 | $165,280 | 18 | $182,469 | $109,467 |
| 2023 | $1,676,484 | $155,009 | $88,859 | $65,282 | 15 | $78,330 | $37,725 |
| 2022 | $1,610,855 | $117,641 | $168,117 | $147,255 | 10 | $157,419 | $40,393 |
| 2021 | $1,662,631 | $430,419 | $46,299 | $27,897 | 5 | $36,274 | $84,875 |
| 2020 | $1,517,241 | $189,509 | $13,133 | $5,500 | 2 | — | $36,083 |
Research compiled by Grantable AI from public sources. Last updated September 2026.
Mission & Focus Areas
The grant-program description identifies advancing and promoting education, science, and international goodwill through amateur radio communications as the foundation’s purpose. It describes support for DXpeditions, especially those to rare or unusual locations that generate worldwide interest, and sometimes for other projects aligned with its goals.
Grantmaking
In filing year 2025, the foundation gave 11 grants totaling $241,233. Grant amounts ranged from $1,000 to $165,500, with a median of $8,000. Notable grants included $165,500 to Delta Xray Group, $20,000 to Latvian Radiosport Federation, and $18,000 to Pacific Islands DX Group for scientific research.
Leadership & Key People
Leadership team and compensation from IRS filings
The 2025 filing lists Donald Greenbaum as treasurer; Kevin Rowett as president; Craig Thompson as vice president; George Wallner, Tom Berson, Richard Seifert, Lee Finkel, John Miller, and Ned Stearns as directors; and Glenn Johnson as secretary.
Northern California DX Foundation is led by Kevin Rowett, President since 2021 (on filings since 2020); none of the 10 officers listed in 2025 report compensation.
Officers on the 2025 filing
Kevin Rowett
President
Director → President, 2021
On filings since 2020
1 hr/week
No compensation reported
George Wallner
Director
On filings since 2020
1 hr/week
No compensation reported
John Miller
Director
President → Director, 2021
On filings since 2020
1 hr/week
No compensation reported
Lee Finkel
Director
On filings since 2020
1 hr/week
No compensation reported
Ned Stearns
Director
Vice President → Director, 2022
On filings since 2020
1 hr/week
No compensation reported
Richard Seifert
Director
On filings since 2020
1 hr/week
No compensation reported
Tom Berson
Director
On filings since 2020
1 hr/week
No compensation reported
Craig Thompson
Vice President
Director → Vice President, 2022
On filings since 2020
1 hr/week
No compensation reported
Glenn Johnson
Secreary
Secretary → Secreary, 2025
On filings since 2020
1 hr/week
No compensation reported
Donald Greenbaum
Treasurer
On filings since 2022
1 hr/week
No compensation reported
Former officers (2)
- Former: Ross Forbes (2020–2023) — Director
- Former: Don Greenbaum (2020–2021) — Treasurer
Data from IRS Form 990 filings, 2020–2025. "On filings since" is the earliest filing we hold that lists the person; hours are average hours per week as reported.
Frequently asked questions about Northern California DX Foundation
How much does Northern California DX Foundation give each year?
Northern California DX Foundation gave $241K across 11 grants in 2025, according to its 2025 IRS Form 990-PF. In 2024 it gave $165K across 18 grants.
What is Northern California DX Foundation's typical grant size?
Northern California DX Foundation's median grant in 2025 was $8,000, and its average grant was $21,930, across 11 grants on its 2025 IRS Form 990-PF.
Where does Northern California DX Foundation give grants?
Northern California DX Foundation's top state is Georgia, with 7% of the grant dollars itemized on its 2025 IRS Form 990-PF.
Does Northern California DX Foundation give general operating support?
Not in 2025: none of the 11 grants with a stated purpose on Northern California DX Foundation's 2025 IRS Form 990-PF were described as general or operating support. Recurring purposes include "Grant" (8 grants).
Who are Northern California DX Foundation's largest grantees?
Northern California DX Foundation's largest 2025 grantees include Delta Xray Group ($165,500), Latvian Radiosport Federation ($20,000) and Pacific Islands DX Group ($18,000), according to its 2025 IRS Form 990-PF. Together they received 84% of its itemized 2025 grant dollars.
How large is Northern California DX Foundation?
Northern California DX Foundation reported $1.7M in total assets on its 2025 IRS Form 990-PF. Its revenue that year was $247K.
What does Northern California DX Foundation fund?
The grant-program description identifies advancing and promoting education, science, and international goodwill through amateur radio communications as the foundation’s purpose. See mission & focus areas ↑
How do I apply for a grant from Northern California DX Foundation?
The 2025 filing says applicants should contact Donald Greenbaum and submit a special-format application with a complete description of the program. Eligibility and process details are in the grantmaking section of this profile. See how to apply ↑
What is Northern California DX Foundation's EIN?
Northern California DX Foundation's EIN (Employer Identification Number) is 94-2853576. IRS Form 990 filing data is available on this page for 2020–2025.
Data last updated October 2026. Sourced from IRS Form 990-PF filings. Research dossier generated September 2026.
Data update history
(2)
When this profile's IRS filing data changed on Grantable
- Added Form 990-PF for fiscal year 2025 (received by the IRS May 15, 2026)
- IRS filings on file for fiscal years 2020–2024
Explore Open Grants
Browse active grant opportunities in Northern California DX Foundation's focus areas in our free grants database
Similar Funders
Funders with grantees in common, and similar funders in California
Velma Neiman Charitable Foundation
Saint Louis, MO
The Velma Neiman Charitable Foundation supports schools and other charitable organizations, with 2024 grants ranging from $20,000 to $100,000 and a median grant of $25,000. Most funding went to Missouri organizations, with a small share going to Washington, DC; the foundation gives only to preselected organizations and does not accept unsolicited requests.
Assets
$1.4M
Grants
12
Total Given
$524K
Center For the Advancement of Science In Space Inc
Merritt Island, FL
The Center for the Advancement of Science in Space funds research and education connected to the International Space Station, including life and physical sciences, flight projects, and science literacy. In 2025, its 49 grants ranged from $5,432 to $432,300, with a median of $52,520, and went to organizations across the United States. It does not state whether it accepts unsolicited requests; it says funding solicitations are unlikely, though occasional targeted solicitations may occur.
Assets
$5.2M
Grants
49
Total Given
$5.0M
Silicon Valley Community Foundation
Mountain View, CA
Silicon Valley Community Foundation funds work in areas such as housing, economic security, education, health, the environment, arts and culture, and civic engagement, with Community Action Grants supporting local, community-led organizations in San Mateo and Santa Clara counties. Its 2024 grants had a median of $51,716, though amounts varied widely; applications depend on the program, and SVCF states that it does not accept unsolicited proposals for advised funds.
Assets
$12.3B
Grants
3,576
Total Given
$3.2B
California Community Foundation
Los Angeles, CA
The California Community Foundation supports nonprofits through discretionary and donor-directed grants, with discretionary priorities including education, health, housing and immigration, alongside other areas such as arts, civic engagement and economic opportunity. Its 2025 grants had a median of $50,000, and its work is focused on Los Angeles County; prospective discretionary applicants are asked to contact the relevant program officer before submitting a letter of intent.
Assets
$2.3B
Grants
2,174
Total Given
$326.6M
The William & Flora Hewlett Foundation
Menlo Park, CA
The William & Flora Hewlett Foundation funds education, climate and conservation, the arts, democracy, gender equity, racial justice, and efforts to strengthen nonprofits and philanthropy, with work spanning the San Francisco Bay Area, the U.S. West, and locations including East and West Africa and Mexico. Its 2024 grants had a median award of $150,000, though amounts varied widely. It generally does not accept unsolicited requests, but sometimes invites proposals through open processes.
Assets
$14.2B
Grants
2,001
Total Given
$625.0M
Marin Community Foundation
Novato, CA
Marin Community Foundation funds work in affordable housing and homelessness, community resilience and power, as well as social services, education, arts and conservation, with a focus on marginalized Marin County residents and some broader U.S. and international grantmaking. Its 2025 grants had a median of $25,000, though amounts varied widely. The profile does not state whether it accepts unsolicited requests.
Assets
$1.3B
Grants
1,573
Total Given
$186.1M
More similar funders
More Funders in California
The filing figures on this page are open data under CC BY 4.0. About GrantGraph Open
Figures come from Northern California DX Foundation's IRS filings (methodology). AI-written summaries, news items and logos are not covered by the open licence. Spot an error? Email hello@grantable.co.
Northern California DX Foundation down — hundreds of funders to go?