This is a non-standard extension to IDEF1X97 (ISO/IEC/IEEE 31320:2) to help you design spatial Relational databases (e.g., to be implemente…

IDEF1X97 - A Spatial Ext…

Thermocouple Plug

TC Plug

WET 4 Twitter Bootstrap

GC Slider 1x3

Intercom Headset

Headset

Standard Filter

Filter

Create your own NES cartridge!

NES

Clear Com Hot Spot Antenna

Hotspot Anttenna

Sparkfun Espressif ESP32 Arduino

Sparkfun ESP32 Thing

Clear Com Antenna Splitter

Clear Com Antenna Splitt…

Clear Com Free Speak Beltpack

Clear Com Beltpack

Clear Com HD Frame

Clear-Com Frame

Some nice hand drawn style flowchart symbols

Hand drawn flowchart

generic system block diagram symbols for wireless equipment, based on 2020 USITT Sound Document Recommendations v3

SBD Wireless v1