NBTV transmissions
Posted: Tue Jan 10, 2012 9:24 pm
Hello,
My name is Corné and I’m living near Eindhoven the Netherlands.
My interest in NBTV was raised when several people started building the Kerkhof NBTV.
Reading the NBTVA site I found that there are NBTV transmissions on shortwave. Up to now I’ve not been able to receive any NBTV signals.
Are there any regular NBTV transmissions? Are there any close to Eindhoven?
Some more info on my NBTV project.
Although I failed to receive any NBTV signals I started thinking about building a NBTV monitor using the KerkHof TV as a starting point. My design evolved over a couple of months. Now it has become a kind of universal monitor. I finished building it last November.
As it is now the monitor is capable of displaying anything between the NBTVA 32line standard and 625lines with 50Hz raster, using missing sync pulse synchronisation. I’ve also added a sync separator for PAL system and external sync inputs for future developments. It uses three 884 thyratrons for line and raster saw tooth generators, two ECC81s as deflection amplifiers, one ECC83 as sync separator, one ECL84 video amp and the well known DG7-32 CRT.
Here are two pictures of my TV monitor and screenshots of a 32line image and a 625line image.
32line NBTV using PC as signal source (Not me in the picture)
625line 50Hz PAL from portable DVD player
My name is Corné and I’m living near Eindhoven the Netherlands.
My interest in NBTV was raised when several people started building the Kerkhof NBTV.
Reading the NBTVA site I found that there are NBTV transmissions on shortwave. Up to now I’ve not been able to receive any NBTV signals.
Are there any regular NBTV transmissions? Are there any close to Eindhoven?
Some more info on my NBTV project.
Although I failed to receive any NBTV signals I started thinking about building a NBTV monitor using the KerkHof TV as a starting point. My design evolved over a couple of months. Now it has become a kind of universal monitor. I finished building it last November.
As it is now the monitor is capable of displaying anything between the NBTVA 32line standard and 625lines with 50Hz raster, using missing sync pulse synchronisation. I’ve also added a sync separator for PAL system and external sync inputs for future developments. It uses three 884 thyratrons for line and raster saw tooth generators, two ECC81s as deflection amplifiers, one ECC83 as sync separator, one ECL84 video amp and the well known DG7-32 CRT.
Here are two pictures of my TV monitor and screenshots of a 32line image and a 625line image.
32line NBTV using PC as signal source (Not me in the picture)
625line 50Hz PAL from portable DVD player