NBTVA 2025 UK CONVENTION & AGM
Saturday April 5th from 10.30 am
Nealies Function Room, Derby Road, Milford, Belper
Derbyshire UK



The NBTV band of brothers.



Kevin Hadfields  'firewheel'  televisor.

 A standard stip of LEDs wrapped around a foam cylinder at an appropriate 'slant angle'
fed via slipring from the clubs standard 'combi' driver board modified to accept reflective
 photodiode from the drums strobe strip.








Graham Hunt's two colour televisor



James Sheehan's  two replica octogan televisors. left one with small
CRT monitor with clubs 32 to 625 line convertor installed.
The right hand side one with laser-cut disc televisor driven by
remote control box far right in picture. Notice that the  viewing window is top of the
unit and using Gary Millards wide screen option of video2nbtv.





 




Latest NBTV test signal generator  designed by Graham Lewis, PCB by Chris Lewis
and enclosure by Jim Sheehan




As it was 100 years since John Logie bird's first demonstration of live TV via wireless
so Dave Gentle thought he would like to recreate this in his demonstration.  The demo consisted
of a 32 line camera monitor taking a picture of a moving object lit by noctavision (infra-red)
output to a wireless TX  then to a wireless RX driving a 32 line mirror drum projector.



Limited number of populated and tested PCBs  and components
from the club shop on show.





Chris Lewis's table. To the left of picture the ' combi board' test rig linked to a test bed
for Claude Dufourmont's PCB  Nipkow  disk  DFT_#A209 PROTOTYPE NEW MECHANICAL TV 32 LIGNES
Graham Lewis's 32 line to VGA converter to display new NBTV signal generator
patterns.





Claude's disc driven by silent running powerful motor with 8mm shaft