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Consumer Audio-Video RF Modulators

  • Features
  • Specs & Order Info
  • Other Documents
  • Single (USM-8D) and Triple (USM-20D3) low cost UHF A/V Agile Modulator, UHF band channels 14~83, CATV channels 65~139
  • High Output 20dBmV minimum, 25 dBmV typical provides ample signal for multiple consumer devices (USM-20D3)
  • High Output 7dBmV minimum 10 dBmV typical provides ample signal for miltiple consumer devices (USM-8D)

Specifications | Ordering Information


Output Frequency Range
VSM-3/4S Channel 3 or 4
USM-20D3 470~890MHz
USM-8D 470~890MHz
Tuning Agile
RF Output Level (min)
VSM-3/4S 5dBmV
USM-20D3 22dBmV
USM-8D 11dBmV
RF A/V Ratio -16dB
Spurious Output
VSM-3/4S 36dB
USM-20D3 42dB
USM-8D 46dB
Frequency Stability ±10kHz
Video Input Type Clamped negative sync
Video Input Bandwidth 4.2MHz
Video Input Level 1 Vp-p
Video Input Range .5~1 Vp-p
Video Frequency
Response ±1.5dB
Video Hum and Noise -60dB
Audio Input Type Monaural baseband
Audio Input Level 0.5 Vp-p
Audio Frequency
Response 50~15,000Hz
Audio Pre-emph. 75 μsec
Video Input Conn. RCA-Fem
Audio Input Conn. RCA-Fem
RF Output Conn. 75½ F-Fem
Voltage Input 115VAC
VSM-3/4S 5.9” (L) x 3” (D) x 1.4” (H)
USM-20D3 5.6” (L) x 1.1” (D) x 3.9” (H)
USM-8D 3.4” (L) x 1.1” (D) x 3.75” (H)
VSM-3/4S 1 lb.
USM-20D3 1.75 lb.
USM-8D 1.15 lb.

Ordering Information

Ordering Information
VSM-3/4S Consumer Audio-Video RF Modulator
USM-20D3 UHF Consumer Agile Triple Audio-Video RF Modulator (UHF: Ch. 14~83, CATV: Ch. 65~139)
USM-8D UHF Consumer Agile Audio-Video RF Modulator (UHF: Ch. 14~83, CATV: Ch. 65~139)

USM-20D3 Data Sheet

This data sheet contains branding from Pico Digital, a recent ATX subsidiary.

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