FP SYSTEMS & SIGNALS
BUILD :: 2026.09.20·ENTRIES :: 5·REV 2.0
INDEX REV 2.0 · 2026

FRANK PETRILLI

STAFF ENGINEER · AI INFRASTRUCTURE & NETWORKS · EMBEDDED RF

SYSTEMS WITH KILOBYTES OF RAM,AND SYSTEMS WITH TERABYTES.

LAYERS 1 THROUGH 8. IR TO IB TO IP TO IC.

Large scale AI infrastructure and the networks underneath it by day. Microcontrollers, radios and flight controllers the rest of the time. Making impact from photons to people.

FROM KILOBYTES
TO TERABYTES.

INTERESTING PROBLEMS
LIVE AT THE EXTREMES.

WORK · CONTRIBUTIONS HOVER A PROJECT

WORKCLICK TO EXPAND

  1. Staff Engineer driving NPI for Cloud AI Infrastructure. Key PoC for strategic product solutions design and post-sales development. Cross-functional SME from layers 1 through 8, IR to IB to IP to IC. Built agentic tooling that cut troubleshooting time on the hardest cases. Earlier stints here: GKE production security, Kubernetes and networking SME, and leading the cross-functional team that owned Cloud's longest running issues.

  2. Staff Production Engineer leading a team on Meta's AI/ML training data systems. 22% OpEx savings across the global ML data infra. Built a novel way to hot cache petabyte-scale data with a smaller footprint, which unblocked critical revenue impact. Led the reliability work protecting Meta's most critical AI/ML workflows.

  3. RF consulting for the UAS industry through Lambda58, focused on LTE and 5G connectivity to aircraft. Custom solutions for Detect-and-Avoid and long range telemetry. Link budgets, antenna placement, and the hardware that flies.

  4. Transport consulting. DWDM, microwave links from 3.65 to 80 GHz, and the fiber plant underneath. Previously co-founded a rural ISP, designed and built its LTE network, and wrote the monitoring and management systems that ran it.

CONTRIBUTIONS

  1. 05 EXPRESSLRS CORE DEV Long range RC control link on 900 MHz and 2.4 GHz LoRa.
  2. 06 PICOADSB AUTHOR 1090 MHz Mode S receiver, RF front end through to the decoder.
  3. 07 O3 ARMER PCB + FIRMWARE Unlocks full power on a DJI O3 air unit with no flight controller attached. 4 g, XT30 in, 6-pin JST-SH out.
  4. 08 FORMATIONFLIGHT MAINTAINER Inter-UAS positioning and telemetry over LoRa and ESPNOW.
  5. 09 INAV CONTRIBUTOR Fixed wing and multirotor flight control firmware.
  6. 10 ARDUPILOT CONTRIBUTOR Autopilot stack across planes, copters and rovers.
CH32V0032 kB SRAM STM3232 kB SRAM ICE40128 kB SPRAM ESP32520 kB SRAM NVL7213.4 TB HBM K8S CLUSTER1 PB 1 kB10 kB100 kB1 MB10 MB100 MB1 GB10 GB100 GB1 TB10 TB100 TB1 PB
LOG

WRITING

NOTES, TEARDOWNS AND WRITEUPS
5 ENTRIES
01 3 MIN A land of glass and IR; building an over-built home network I've spent decades working on high performance complex datacenter and service provider networks. It's only fair that my home network should be a bit out of the ordinary too, right? That… 02 1 MIN Configuring Allowed Sysctls in MicroK8s Kubernetes Cluster Learn how to set the allowed-unsafe-sysctls flag in the kubelet for MicroK8s. 03 AI/ML 7 MIN Per-Character OCR from analog video with TensorFlow I have a hobby flying first-person-view (FPV) planes and quadcopters. When flying FPV, it's sometimes nice to reflect back on your previous flights and see what spots on the map you… #tensorflow#machine-learning#AI 04 NETWORKING 11 MIN Dialup Adventures Part 1 Though we often forget it, dialup is what so many of us in the computer industry began with. The circumstances of transmitting digital data over a network designed to transmit only voice… #networking#dialup 05 FIXES 1 MIN Google Assistant not working on OnePlus A few weeks ago, my OnePlus phone started having issues with Google Assistant, where a query would never finish. This was especially annoying, as this defeated one of the main features… #fixes
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RF

RADIO

AMATEUR AND EXPERIMENTAL
HF 20m / 40m FT8 · WSPR · QRP
VHF/UHF 146.520 MHz FM · DMR · PNW-DMR
UHF DATA 900 MHz LORAWAN GATEWAY
SHF/EHF 3.65-80 GHz AMPRNET MICROWAVE
NO7UP →