GhostLoveScore
- Nov 27, 2016
- 71
- Joined
- Nov 27, 2016
- Messages
- 71
I built this circuit
But without the audio part. I have also put simple one transistor RF amplifier on the collector of Q2. The range is alright. 30m or so, maybe 50m. But the problem is that the picture slides vertically. I have an older portable TV that has V-Hold trimmer and I can slow it down so I can see the picture. But it never stops. On my other TV, newer CRT TV, sometimes it can "lock" on the signal and sometimes not.
So what is the problem with the composite video signal when TV can't stop the picture from sliding vertically? I mean, it's obvious that the transmitter distorts composite video signal in some way, I want to know what exactly it distorts. Otherwise, picture looks fine.
But without the audio part. I have also put simple one transistor RF amplifier on the collector of Q2. The range is alright. 30m or so, maybe 50m. But the problem is that the picture slides vertically. I have an older portable TV that has V-Hold trimmer and I can slow it down so I can see the picture. But it never stops. On my other TV, newer CRT TV, sometimes it can "lock" on the signal and sometimes not.
So what is the problem with the composite video signal when TV can't stop the picture from sliding vertically? I mean, it's obvious that the transmitter distorts composite video signal in some way, I want to know what exactly it distorts. Otherwise, picture looks fine.