Ohio · Nonprofit
TUCSON AMATEUR PACKET RADIO CORPORATION
TUCSON AMATEUR PACKET RADIO CORPORATION (Ohio) receives grants from 3 organizations whose IRS filings report $533,383 to it, the largest being AMATEUR RADIO DIGITAL COMMUNICATIONS ($529,300). 2 of them have funded it in more than one year.
- Revenue FY2024
- $56k
- Funders on record
- 3
- Grants received
- $533k
- Net assets
- $358k
What Tucson Amateur Packet Radio Corporation does
Mission
Expand amateur digital radio. Tapr is involved in a multi-year development project, funded by ardc, to develop a specialized radio receiver for a personal space weather station (psws); a project partially funded by the national science foundation and led by dr. N frissell at university of scranton. The objective is to develop a low cost, mass- producible design for hobbyists and scientists to observe the effects of space weather on radio wave propagation.
As stated on its FY2024 Form 990.
Programs
The organization develops, distributes and provides documentation of low cost digital communications software and hardware for radio amateurs.
$16,452 spent14% of program spendingThis project supports development to advance the state of the art in amateur radio digital communications and propagation studies by providing hardware and software for experimenters at reasonable cost. Tapr funded the development and production of the ticc, tms-buf, pulse puppy, and gps experimenter's kit, devices useful to the time and frequency measurement community used to improve the accuracy of such measurements in a smaller package and less expensive than other products on the market.
$100,000 spentof which $100,000 as grants86% of program spending
The 2 programs described on its FY2024 Form 990, listed largest first by expense. Program spending in total: $116,452.
The organization over time
Each line starts at 100 in 2017, so what you read is the shape rather than the size: 150 means half as much again as 2017, 50 means half. The number beside each label in the key is where it ended.
Balance sheet
Total assets and total liabilities at each year end, in dollars. The largest one-year move in total assets was 2021 to 2022, from $197k to $462k (+135%).
How it's funded, over time
Each bar is one year's revenue split into where it came from, and every bar is the same height — these are shares, not amounts, so a year that raised twice as much looks the same size. Hover a bar for the split.
Surplus & reserves
Operating surplus or deficit each year, and months of liquidity in hand. 3 of the last 8 reported years ran a deficit.
reserve
Leadership and staff
The officers, directors, trustees and key employees listed on each return. Joined and no longer listed compare each filing with the year before, matching people by surname and first initial; a year after a gap, or a roster under three people, has no comparison.
Who funds it, year by year
2019 → 2022: the base broadened from 1 funder to 3 funders, grant income rose $10k → $426k.
1 of 3 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 0% of grant dollars received. That money is really individual donors directing a sponsor; the institutions to cultivate are the non-DAF funders.
From the IRS filings of TUCSON AMATEUR PACKET RADIO CORPORATION’s funders (the co-funder graph). Association, not causation. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
How concentrated its funding is
TUCSON AMATEUR PACKET RADIO CORPORATION leans on a few funders — its largest provides 99% of grant income and the top three 100%; half comes from just 1 funder.
the vertical line marks half of all grant income — 1 funder to its left
100% of the income these shares are computed over arrives through pass-through sponsors or from payers whose filings do not say what kind of payment it is. Concentration is still measured over all of it, because the money is real; what it does not support is a claim about how many institutions have chosen to fund TUCSON AMATEUR PACKET RADIO CORPORATION.
Largest funder’s share by year: 2019 100% · 2020 100% · 2021 100% · 2022 99% — broadly stable.
“Effective funders” = inverse Herfindahl index (1 / Σ shareᵢ²) — the number of equal-sized funders that would give the same concentration. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
Where its funders are
TUCSON AMATEUR PACKET RADIO CORPORATION draws 100% of its grant income from funders outside Ohio, across 2 states in all.
In-state vs out-of-state, by year
Funder states come from each funder’s own filing. $83 arriving through sponsors registered in 1 state is excluded from the map and the split above: a sponsor holds money on a donor’s behalf, so its registered address would place those dollars somewhere no donor need ever have been. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
Organizations like TUCSON AMATEUR PACKET RADIO CORPORATION
Organizations whose mission and program text most resemble this one, by semantic similarity over every organization in the US filings — the closest peers, and often the clearest route to shared or prospective funders.
In Ohio
Nationally
Read directly from this organization’s own Form 990, as neutral context.
Where the money goes
100% of spending goes to programs.
Governance
Public support
98%
Share of support from the public (Schedule A) — the basis for its public-charity status.
Footprint & structure
Files a return copy in 1 state
Screen this organization
A dated, signed PDF of the compliance screen for TUCSON AMATEUR PACKET RADIO CORPORATION: IRS status (Business Master File, Publication 78, auto-revocation), the OFAC sanctions lists, the Internal Revenue Bulletin, and California registration, with the Rev. Proc. 2018-32 §8.01 reliance elements stated element by element. Generated from the current files at the moment you download it.
Screens are triage, not determinations; a source that cannot be read reports not screened, never clear. Screen this nonprofit · How the screen works · on the API as GET /api/screening/{ein}?format=pdf
Questions and answers
- Who funds TUCSON AMATEUR PACKET RADIO CORPORATION?
- TUCSON AMATEUR PACKET RADIO CORPORATION (Ohio) receives grants from 3 organizations whose IRS filings report $533,383 to it, the largest being AMATEUR RADIO DIGITAL COMMUNICATIONS ($529,300). 2 of them have funded it in more than one year.
- How many funders does TUCSON AMATEUR PACKET RADIO CORPORATION have?
- IRS filings report 3 organizations giving $533,383 in grants to TUCSON AMATEUR PACKET RADIO CORPORATION, 2 of which have funded it in more than one year.
- Who is the largest funder of TUCSON AMATEUR PACKET RADIO CORPORATION?
- AMATEUR RADIO DIGITAL COMMUNICATIONS is the largest funder on record, with $529,300 in grants. The full list of funders is on this page.
- How can an organization like TUCSON AMATEUR PACKET RADIO CORPORATION find more funders?
- Start with the funders already giving here, then look at the foundations that back similar organizations in Ohio. The funding by cause and by state pages list the largest funders for a given area and how to approach them.
These figures are read directly from IRS Form 990 / 990-PF e-file XML: this organization’s own return for FY2024 (financials across 2017–2024), and the filings of 3 funders that report grants to it. “On record” means captured in the filings we have parsed — a funder that does not e-file, or whose grant detail is not itemized, will not appear. Filings run roughly 12–24 months behind. Trends on this page end at FY2023, the last fiscal year that has finished arriving; later years are shown and marked, and move no figure. Data on this page was exported October 14, 2026. What this page cannot tell you · view filing