Quintron 792-6252 787-6597 Rackmount FM Modulator Generator 10.2 MHz Cards

Quintron 792-6252 787-6597 Rackmount FM Modulator Generator 10.2 MHz Cards

This is a Quintron Systems rackmount modulator/generator chassis housing three FM modulator cards and two HP ±12V DC power supplies. Each modulator card produces an approximately 10.2 MHz carrier signal that can be frequency-modulated by an audio baseband signal applied to the card's B/B INPUT port. The baseband input level is approximately 1V. Two of the three cards are part number 787-6597-001; one is part number 792-6252-001, which also includes a front-panel FREQ adjustment. Cards provide DET OUTPUT and GEN/MOD OUTPUT connections on their front panels.

Specifications & What's Included

• Manufacturer: Quintron Systems Inc.
• Chassis: multi-slot rackmount card cage
• Modulator card 1: 792-6252-001 — FREQ, B/B LEVEL, B/B INPUT, DET OUTPUT, GEN/MOD OUTPUT connectors
• Modulator cards 2 & 3: 787-6597-001 (×2) — 3/3 LEVEL, B/B INPUT (62M1-1MW / 62M1-MW), DET OUTPUT, GEN/MOD OUTPUT
• Output frequency: ~10.2 MHz per card
• Modulation type: Frequency Modulation (FM) via baseband audio input
• Baseband input level: ~1V
• Power supplies: two HP units, ±12V DC at 1A each
• Power supply card part number: 787-6941-001 (visible on label)
• Front-panel power connections: +12V, GND, −12V banana jacks
• Rear backplane: labeled multi-pin connector rows XA3–XA24
• Rear connectors: BNC-style coaxial jacks (XA3–XA14 rows visible)
• High-voltage terminal block on rear backplane (DANGER HIGH VOLTAGE label present — use caution)
• Card connectors: BNC RF connectors and banana jacks on card front panels
• Form factor: rackmount chassis

Applications

Quintron Systems produced modulator and generator equipment primarily for cable television headend, broadcast distribution, and telecommunications test applications. FM modulator cards of this type are used to place a frequency-modulated signal on a specific RF carrier — in this case approximately 10.2 MHz — allowing audio or baseband signals to be transmitted, combined, or processed within a larger RF distribution or test system. The card-cage architecture with a shared backplane and centralized power supply is characteristic of Quintron's headend and distribution equipment from the 1980s and early 1990s. This type of modular rackmount system was common in cable TV headends, satellite downlink processing, and RF lab bench setups where multiple modulated carriers needed to be generated from a single chassis. Technicians working with legacy cable headend gear, RF test benches, or Quintron-compatible distribution systems are the primary audience for this equipment today.