PAL NTSC AV to RF UHF Modulator

This UHF RF modulator transforms composite AV sources into broadcast-ready RF signals compatible with standard TV aerial inputs. Constructed from durable ABS plastic, it supports both PAL and NTSC video standards and operates across the complete UHF band (471.25–885.25 MHz, Channels 21–69). Output level is precisely maintained at 85±5 dBuV with 75Ω impedance matching on both RF and video input sides. Audio carriers are configurable for M (4.5 MHz), B/G (5.5 MHz), I (6.0 MHz), and D/K (6.5 MHz) systems. Connections include RCA female for AV input and F-type female for RF input/output, with DC power delivered through the RF output port (9 VDC, 100 mA). Default factory setting is Channel 21 (471.25 MHz), PAL-B/G, 38 kHz sound carrier. It offers manual frequency selection with real-time frequency display, adjustable video and audio output levels, and non-volatile memory to store user-defined channel and audio settings — essential for repeat deployments. Fully compatible with TV Link, SLX, and common set-top boxes. Designed for permanent installation in hospitality and retail venues: hotels, pubs, restaurants, sports bars, cafés, and supermarkets where centralised AV distribution over existing coax infrastructure is required.