This is the successor to the popular TV PLL Sender. NOW IT COMES BOXED. It is a color video/audio RF modulator / sender board for home or other use. You connect video and/or audio and send it wirelessly up to 100m (actual distance varies with surrounding conditions, guaranteed output 100mW negative sync pulse at any channel). The video input can be from a VCR or VCP, a CCTV camera, a video mux out, etc. It's also ideal for wireless monitoring from a distance, or any kind of surveillance including audio. Reception is on a regular television set on VHF or UHF (any channel whose frequency is from 47MHz to 880MHz). The same unit is suitable for both VHF and UHF.
The most common use is the distribution of VCR/VCP to unlimited TV sets (within the reception range, approximately a 100m radius from the TV PLL Sender). You can change the RF output channel on the fly. Just go the channel selection ‘menu’ and press the UP or DOWN arrow buttons to go to the next or previous channel, respectively. The transmission channel and its corresponding frequency will be displayed on the 2x8 LCD screen. Starting with v1.04 you can also change the frequency directly by 250KHz steps anywhere from 45MHz to 890MHz.
You can change the sound system independently of the channel. This gives a wider range of possibilities. Possible sound systems are: BG, DK, MN, I, L which are suitable for PAL, SECAM (L only), and NTSC. Starting with v1.04, you may disable the sound subcarrier altogether, for a video-only output.
Another ‘menu’ selection allows toggling the output between RCA Input and TEST mode. TEST mode modulates a two-vertical-bar test screen along with 1 KHz sound that helps tune the TV set more easily.
All settings can be saved internally for next power up.
This is a DSB unit. Product Specifications to be announced.
Design and Development of Electronics and Software Systems