Arduino + AD9850 30MHZ DDS Signal Generator in 12$ : 4 Steps - Instructables
Amazon.com: UNI-T UTG932E Function Generator Arbitrary Waveform 60 MHz Dual-Channel 200MSa/s 14 Bits Frequency Meter with USA Power Adapter USB Cable Power Cord(UTG932E 30 MHz 2ch) : Industrial & Scientific
Signal, Function + Waveform Generators - Used Keysight Equipment
Function generator - 5 - 30 MHZ | SDG800 SERIES - Siglent Technologies Co., Ltd - arbitrary waveform / dual-channel / digital
Instek AFG-3031 30 MHz Single Channel Arbitrary Function Generator: Amazon.com: Industrial & Scientific