I used two portsdown transmitters fed into a 23cms splitter combiner via variable attenuators into one power amplifier.
I will do some more experiments here between myself here in Kettering and Arthur G4CPE in Luton next week.
This would hopefully make a big increase in DATV repeater useage and encourage more people into DATV
We have a 1080 HD service at 2Msym/s which if you can receive it is a superb service however there are areas where it does not cover so we will be installing a 2nd channel 2MHz up from the main output using a 2nd Adalm Pluto at 250Ksym then on to a mixer.
We did tests last summer on this with perfect results see attached
73 Paul G6MNJ
ps send my regards to Arthur!
- 2023-02-19 10.55.58.jpg (1.04 MiB) Viewed 754 times
In the future could there be a third channel with just data?
GB3NQ pushes onwards
I have installed a pluto dvb output next to an analog FMATV signal witch looks like an audio channel.
I do see some mixed signals out of the amplifier but both main signals work great.
I found smaller signals (250 and lower) are more interfered by windgenerators causing more flutter on 23cm.
So i will do some testing with higher Stream resolution to check if the flutter will reduce to a stable picture on 1000 or 2000Ks...