Hi Robert,
I have been trying multiple units the last years (my background is electronics design).
The better transmition/receiving is through diversity receivers other then with single antenna's.
The diversity receivers can't reliable receive standard FM video transmition as the bandwidth and therefore the frequencies of FM very too much to catch the best signal. Even on both antenna's.
Adding more power to the transmitter-part even made it worse, as the reflections became bigger too, suppressing the original signal further. I tested and modified units from 60mW upto 1.5W. The more power only has only advantages outdoor in line-of-sight transmissions.
The only reliable modulation indoor turns out to be the COFDM links which are more expensive to achieve and is digital, so you have more frame delays caused by the digital encoding-decoding in DVB-T. The behavior of the COFDM modulation is that the frequency band used is narrow and constant, making it for a diversity receiver much easier to choose the best incoming signal.
You also have the WIFI transceivers, but they take easily a half second delay, which is not what I'm looking for either.
My previous reply is based on 3 things:
- 1. they mention AM?? modulation. Video transmission is not possible to get proper noise free transmission in AM, so it must be FM and an error on the webpage. Which makes me scratch my head if they are professional...
- 2. Since it is most likely FM modulation, I have enough bad experiences with this.
- 3. They have no Diversity receiving part, which will end up 200% in reflections.
Regards,
Marc