I'm looking to solve a minor nuisance with my Sony TV's remote and a cable TV providers mandatory digital adapter box -- when switching to regular cable tv i'm forced to use the digital adapter's remote to only change the channel; I dont want to use a second remote just to change the cable tv channel but instead want to continue to use my Sony TV's remote.
I saw this project and was intrigued to make some go between unit which will listen for my Sony TV's channel change IR commands then rebroadcast it in the IR language which the digital adapter understands. Such a project dealing with Arduino, soldering, and IR doo-dats is all new to me so we shall see. I'm hoping for some answers to a few questions before getting started.
TV Specs: Sony XBR75X800H (IR Modulation: ??)
Digital Adapter: [Cisco DTA50](https://www.softtel.ro/files/STB/Cisco Digital Transport Adapters/Cisco Digital Transport Adapter 50.pdf) (IR Modulation: 57 Khz)
I read there are 2 types of TV remote controller IR wavelengths: 940nm and 850nm. I've been able to locate 940nm transmitters and receivers but not 850nm transmitters and receivers. Can you point me to both types which would be suitable for this Arduino project with receiver modulations for 38 Khz and 57 Khz. Preferably available to Canada.
In a well lit (or dark) livingroom what distance can i expect these IR transmitter to get?