UK Vintage Radio Repair and Restoration Powered By Google Custom Search Vintage Radio and TV Service Data

Go Back   UK Vintage Radio Repair and Restoration Discussion Forum > Other Discussions > Homebrew Equipment

Notices

Homebrew Equipment A place to show, design and discuss the weird and wonderful electronic creations from the hands of individual members.

Reply
 
Thread Tools
Old 21st Mar 2021, 1:13 am   #1
dalekmoore2007
Pentode
 
Join Date: Aug 2008
Location: Melbourne, Australia
Posts: 142
Default My multi system VCR139 CRT monitor

I Started this monitor in 2017 and experimented in higher line rates other than standard NBTV 32 line 12.5 rates
Did a fair bit of work with this little CRT build is here
http://www.taswegian.com/NBTV/forum/viewforum.php?f=31
We have FreeNBTV software can use any thing you want line rates up to 240 line found here
http://www.taswegian.com/NBTV/forum/...=2458&start=45
Well only limited to the bandwidth of your sound card so that limits you to the video quality not the line frame rates ...so what i did to keep the video Quality with the bandwidth possible for the highest line rate was drop the frame rate below is 240 line 2 hz image is still viewable sort of a cross between SSTV and NBTV .
I call it SNBTV ; ) slow NBTV ! short you tube video below and camera results slow enough for the cameras shutter to pick up all the image .
https://www.youtube.com/watch?v=4qoeoWDusQI
Attached Thumbnails
Click image for larger version

Name:	DSCN7210.JPG
Views:	144
Size:	130.5 KB
ID:	229707   Click image for larger version

Name:	DSCN7223.JPG
Views:	127
Size:	101.4 KB
ID:	229708   Click image for larger version

Name:	DSCN7273.JPG
Views:	121
Size:	101.0 KB
ID:	229709  
dalekmoore2007 is offline   Reply With Quote
Old 21st Mar 2021, 8:52 am   #2
Ed_Dinning
Dekatron
 
Join Date: Jan 2004
Location: Newcastle upon Tyne, Tyne & Wear, UK.
Posts: 6,741
Default Re: My multi system VCR139 CRT monitor

Good pictures, will you go up to a supersized VCR97 next ?

Ed
Ed_Dinning is offline   Reply With Quote
Old 22nd Mar 2021, 9:05 am   #3
dalekmoore2007
Pentode
 
Join Date: Aug 2008
Location: Melbourne, Australia
Posts: 142
Default Re: My multi system VCR139 CRT monitor

Quote:
Originally Posted by Ed_Dinning View Post
Good pictures, will you go up to a supersized VCR97 next ?

Ed
Yes i am going bigger i am going to use my 60s dead scopes CRT a GEC 1025 H i have data for the GEC 1000 H which looks the same least pin out is i will have to adjust work it up to working condition trail and error lets hope not to much error !

If it works out and i can power this beast it has 2 electron guns and 2 deflection plates i might be able to do what i am doing here on my binocular monitor
on one crt
https://www.youtube.com/watch?v=NnOemQof-6U
But i want to go 120 180 240 with low band width select as in low 2 hz frame rate since i don't have a system converter and i can make the video on the pc and use its sound card be horizontal scanning
Attached Thumbnails
Click image for larger version

Name:	DSCN7314.jpg
Views:	31
Size:	45.6 KB
ID:	229801   Click image for larger version

Name:	DSCN7315.jpg
Views:	28
Size:	67.6 KB
ID:	229802  
dalekmoore2007 is offline   Reply With Quote
Reply

Thread Tools



All times are GMT. The time now is 11:42 pm.


All information and advice on this forum is subject to the WARNING AND DISCLAIMER located at https://www.vintage-radio.net/rules.html.
Failure to heed this warning may result in death or serious injury to yourself and/or others.


Powered by vBulletin®
Copyright ©2000 - 2021, vBulletin Solutions, Inc.
Copyright ©2002 - 2021, Paul Stenning.