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    Greyfox F1003 — 3-Channel Modulator Technical Data Sheet

    September 08, 2026 1 min read

    Technical data sheet for the Greyfox Systems F1003 3-Channel Modulator, used to distribute up to three video devices over TV/cable channels to multiple TVs.

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    Full text manual (for reference)

    Technical data sheet for the Greyfox Systems 3-Channel Modulator (Part #F1003) — a compact modulator for distributing up to three separate video devices over TV or cable channels to multiple TVs.

    Overview

    The F1003 modulates up to three separate devices onto TV or cable channels for multi-TV distribution. It uses digital PLL tuning to limit channel drift and features switch-type channel selection with full channel memory retained through power outages.

    Features

    • Modulates up to 3 separate devices
    • Digital PLL tuned (limits channel drift)
    • Multiple TV distribution
    • Switch-type channel select
    • Full channel memory retained through power outages
    • Surface mount technology PC boards
    • UHF channels 14 to 83
    • Cable channels 65 to 94 and 100 to 139
    • Shipped with 110V power supply
    • LED power indicator
    • Easy installation

    Technical Specifications

    Output Channel TV Mode: Ch 14–83 / CATV Mode: Ch 65–139
    Output Level 80 dBμV Double Side Band
    Audio Frequency Stability ±10 KHz
    Video Frequency Stability ±10 KHz
    Audio Input Impedance 10K ohm
    Video Input Impedance 75 ohm
    RF Output Impedance 75 ohm
    Audio Output Mono
    Power Required DC 15V, 200mA

    Note

    DBS external ports cover 54–860 MHz. Information contained herein is subject to change without notice.

    © Copyright 2003 Greyfox Systems. Doc. #609R1. P.O. 230 Bilmar Drive, Pittsburgh, PA 15205 • www.greyfox.com