Quarterwave Corp.
Quarterwave Corp. is a small business in Rohnert Park, CA registered on SAM.gov to bid on federal contracts. It has won about $3.9 million in federal prime contracts as a small business since fiscal year 2024, according to USAspending.gov.
- UEI
- DJYSFKHFKPR5
- CAGE code
- 52557
- SAM.gov registration
- Active
Federal contract history
Contract history from USAspending.gov is taking longer than usual to load. It will appear here in a moment, or when you reload the page in a few minutes.
Registration details
Show registration details
From SAM.gov's monthly public file dated Nov 1, 2026. If the business has updated its registration since, SAM.gov shows the newer details.
| Legal business name | Quarterwave Corp. |
|---|---|
| Unique Entity ID (UEI) | DJYSFKHFKPR5 |
| CAGE code | 52557 |
| Location | Rohnert Park, CA |
| SAM.gov registration | Active through May 13, 2027 |
| Business started | 1987 |
| Primary NAICS code | 334220: Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing |
| Website | www.quarterwave.com |
| How to contact | Through its website above. No phone or email in SAM.gov's public file. Search UEI DJYSFKHFKPR5 in SBA's Small Business Search for a contact the business added. |
Certifications and business types
No SBA certification (8(a), HUBZone or WOSB) in SAM.gov's public file (Nov 1, 2026).
SBA certifications let a business compete for set-aside contracts (set-asides explained). Check the current record on its SAM.gov entry.
How to check or correct this record
The file sometimes leaves a certification out, and a newer one won't be in it yet.
Check or correct this record at the source: open its SAM.gov entry, or search UEI DJYSFKHFKPR5 () in SAM.gov's entity search (free sign-in) and in SBA's Small Business Search (formerly DSBS), which shows SBA certifications. The business can update its details in its SAM.gov registration and its certifications at certifications.sba.gov.
NAICS codes Quarterwave Corp. is small under
On its SAM.gov registration, Quarterwave Corp. meets the SBA size standard for these industries, so it can bid on small business set-asides that use them.
- 334220 Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing
- 334290 Other Communications Equipment Manufacturing
- 334419 Other Electronic Component Manufacturing
- 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing
- 334515 Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals
Open contracts in Quarterwave Corp.'s NAICS codes
191 open federal opportunities on SAM.gov use one of Quarterwave Corp.'s NAICS codes and may be open to it: no set-aside, or, in the codes it is registered small under, a small business set-aside. Here are a few, those in its primary code first, then those in California, then the soonest due.
- UPDATED ALS SHB pulsed RF HPA
✦ This is an updated request for proposal from Lawrence Berkeley National Laboratory (run by the University of California for the Department of Energy) for two custom 25 kilowatt…
Due in 11 daysNov 18, 2026, 3:00 PM PSTThe AI summary flags this date. Check SAM.gov.
- MPU5 Radios
Due in 3 daysNov 10, 2026, 9:00 AM MST
- RFQ - AFRL/RFY Video Surveillance System
Due in 5 daysNov 12, 2026, 12:00 PM EST
- Antenna, in Repair/Modification of
✦ NAVSUP Weapon Systems Support (Navy) wants one antenna repaired and returned ready for use (NSN 5985 015855465, part number 562R163H01, QTY 1, unit not stated).
Due in 9 daysNov 16, 2026, 4:30 PM UTC-4
- Antenna, in Repair/Modification of
✦ NAVSUP Weapon Systems Support (Mechanicsburg) wants a vendor to repair an aircraft antenna (CAGE 03956, ref. 1978835) under Emergency Acquisition Flexibilities.
Due in 11 daysNov 18, 2026, 4:30 PM UTC-4
Similar small businesses
Other small businesses of a similar size with the same primary NAICS code (334220) that have won federal contracts in California:
- Thinkom Solutions, Inc., Hawthorne, CA
- Amrad, Inc, San Diego, CA
- Signal Engineering Inc, San Diego, CA
- Ferbak, Inc., Northridge, CA
- Extreme Waves, Inc., San Diego, CA
- Computer Technology Associates, Inc., Encinitas, CA
Is this your business? Get a reminder before the SAM.gov registration expires
Get a reminder before the SAM.gov registration expires. It's active through May 13, 2027. We'll email you 60, 30 and 7 days ahead, and if it lapses.
Frequently asked questions
What is Quarterwave Corp.'s CAGE code?
Quarterwave Corp.'s CAGE code is 52557. The Defense Logistics Agency assigns CAGE codes when a business registers on SAM.gov.
What is Quarterwave Corp.'s UEI?
Quarterwave Corp.'s Unique Entity ID (UEI) is DJYSFKHFKPR5. SAM.gov assigns the UEI, and it identifies the business across the federal government.
Is Quarterwave Corp.'s SAM.gov registration active?
Yes, as of SAM.gov's public data from Nov 1, 2026, Quarterwave Corp.'s registration is active through May 13, 2027. Registrations are renewed every year.
Is Quarterwave Corp. a small business?
Quarterwave Corp. is registered on SAM.gov as small under 5 NAICS codes, including its primary code, 334220. Size is set per NAICS code, so a business can be small for some contracts and not others.
Keep going
- Look up another business's CAGE code or UEI
- Check a SAM.gov registration's status
- How to become a government subcontractor
- Hiring subcontractors? List small businesses by state, NAICS code and certification
Registration details come from SAM.gov's public entity extract and contract figures from USAspending.gov. Contact names and street addresses are left out. To change these details, update the registration on SAM.gov. To report a mistake on this page, or to ask us to remove it, email hello@fedready.us with the page address; we reply within 2 business days. For a removal, write from an address at the company.