The brand-new PCR4200 multi-channel phase coherent receiver is available for purchase!→

Signal Hound
  • RF Test Equipment
  • Support & Resources
  • Company
  • Contact

Palm-sized powerful signal generation

Signal Hound’s VSG25A is a revolutionary, pocket-sized vector signal generator that delivers high-performance RF testing capabilities at an unprecedented price point. Controlled and operated by the VSG25A software, this USB-powered device offers a versatile and cost-effective solution for telecommunications and ISM band applications.

Download

Download VSG25 Software 64-bit

Version 1.0.10 for Windows 11, 10—11 MB .zip file

Download VSG25 Software 32-bit

Version 1.0.10 for Windows 11, 10—10 MB .zip file

Related:

  • View the release notes
  • Download the Software Manual

The included software automatically generates:

  • CW: 100 MHz to 2.5 GHz, -40 dBm to +10 dBm
    • Unspecified operation down to 80 MHz, or -70 dBm to +13 dBm
  • AM / FM: 30 Hz to 40 MHz modulation rates, sine, triangle, square, ramp
  • Pulse: 6 ns to 25 ms width, 12 ns to 1 second period
  • Multi-tone: Up to 1023 tones with optional center notch
    • Use random phase + notch for Noise Power Ratio testing
    • Use parabolic phase for best signal / noise
  • PSK: BPSK, DBPSK, QPSK, OQPSK, DQPSK, π/4 DQPSK, 8-PSK, D8PSK, 16-PSK
    • 4k to 45M symbols per second
    • Optional raised cosine, root raised cosine filtering
    • Up to 512 symbols, streamed continuously in a loop
    • Binary symbol editor features 1-click insertion of PN7 / PN9 sequences
  • QAM: QAM-16, QAM-64, QAM-256 (same features as PSK)
  • ASK / FSK: 4k to 45M symbols per second
    • Optional Gaussian filtering
    • Up to 512 symbols, streamed continuously in a loop
  • Sweep
  • Arbitrary Custom Modulation
    • Load a CSV file with I and Q values, specify center frequency, amplitude, pattern length (up to 2048), pattern period (up to 65535), and clock rate.
  • Contact Us
  • How to Order
  • About Us
  • Blog
  • Press Releases
  • Community Forums
  • Distributors
  • Sitemap
  • 30-day Money-back Guarantee
  • Videos & Media

© 2026 Signal Hound

Privacy Policy | Terms & Conditions