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David Clark U3810 Drilled Screened Box, P/N 26497P‑07
Compact radio interface module for David Clark Series 3800 intercom systems. The U3810 delivers full radio transmit/receive functionality in a rugged, EMI-shielded enclosure, perfect for small multi-position crew setups.
Integrated Radio Interface – Adds full radio TX/RX capability to Series 3800 systems
Built-in PTT Switch – Momentary push-to-talk button for direct transmission control
Compact and Lightweight – Approx. 0.1 lb, ideal for space-constrained installations
Flexible Connectivity – One intercom input, one radio input, and remote PTT support
Made in the USA – Reliable quality and EAR99 export compliant
The David Clark U3810 (P/N 26497P‑07) is a purpose-built radio interface module for 2–3 position Series 3800 intercom systems. It allows all connected headsets to transmit and receive radio communications when the internal PTT is activated. Housed in a drilled and screened aluminum enclosure, the unit is compact, lightweight, and built to withstand harsh mobile environments. With multiple connector ports and optional remote PTT integration, it enables flexible system design and reliable crew communication.
Technical Specifications
Part Number: 26497P‑07
Model: U3810
Function: Radio TX/RX interface for Series 3800 systems
Enclosure: Drilled and screened aluminum
PTT: Internal push-button and optional remote PTT cable
Connectors: 1x system input, 1x radio input, remote PTT support
Weight: Approx. 0.1 lb (shipping weight)
Country of Origin: USA
Export Classification: EAR99
Use Case: Ideal for intercom systems with 2–3 user positions
Ordering was easy. Spoke with a professional and friendly person.
Shipping was fast only two days.
Used the product on a boat outboard motor and bracket.
Excellent primer for bare aluminum.
Couldn’t have gone better from ordering to product results.
Thank you!
I built this kit as a teenager most of 55 years ago. The kit is essentially the same, but now they’re laser cut. In the past, the panels were die-cut, sometimes you get one done with a dull cutter. That took a lot of extra time, carefully re-scoring everything with a narrow Exacto blade so the pieces wouldn’t split. This kit is so crisp, it’s a joy to assemble. It’s fun seeing old reflexes come to life while assembling this baby. I only have the FW-190 from those years, but also built this one (the Hellcat), the Spitfire, Me-109, and the P-40. Good times!
