View Full Version : Color Bar Generator


lnx64
09-05-2012, 09:24 AM
Not exactly broadcasting gear but: http://www.ebay.com/itm/SENCORE-CG138-COLOR-BAR-PATTERN-GENERATOR-GUN-KILLER-AND-INTERLACE-CONTROL-/221118830960?pt=BI_Cellular_Optical_Television_Tes t_Equipment&hash=item337bb59970

Does this look like a good tool for me to add to my collection? Also, what exactly are "Gun killers"? I don't want it destroying my TV's, lol.

dieseljeep
09-05-2012, 09:55 AM
Not exactly broadcasting gear but: http://www.ebay.com/itm/SENCORE-CG138-COLOR-BAR-PATTERN-GENERATOR-GUN-KILLER-AND-INTERLACE-CONTROL-/221118830960?pt=BI_Cellular_Optical_Television_Tes t_Equipment&hash=item337bb59970

Does this look like a good tool for me to add to my collection? Also, what exactly are "Gun killers"? I don't want it destroying my TV's, lol.

I never used the gun killers on my generators. They were made to connect to the control grid leads of the CRT socket. That was for setting purity.
All I did was turn down the screen controls for the green and blue guns. It was less trouble than using the gun killers.
Sencores were a little more expensive and also more stable. :yes:

bob91343
09-05-2012, 10:18 AM
I have a Lectrotech (?) color bar generator for sale; if you are interested PM me.

lnx64
09-05-2012, 07:11 PM
I don't know much about that generator either. How much are you looking for it, I'm not looking to spend much.

bob91343
09-06-2012, 12:18 AM
I figure $25 plus freight would work for me. It's already in a box; the last guy flaked.

lnx64
09-06-2012, 11:10 PM
Is there a model number? I'm curious about it.

bob91343
09-07-2012, 12:32 AM
Model V6-B.

lnx64
09-07-2012, 10:42 PM
Hmm, after comparing the two, I'll have to pass, sorry.. The Sencore seems to have a few more controls that can adjust more parameters, including interlace control, which will come in handy. So I purchased the Sencore.

bob91343
09-07-2012, 10:59 PM
No problem; you do what's best for yourself. Maybe someone else will want mine.

lnx64
09-07-2012, 11:51 PM
My only question about these generators, where do I attach the gator clips to? Directly to the VHF terminals, or to an RF modulators composite input?

bob91343
09-08-2012, 12:03 AM
I believe they go to the CRT base to short out individual electron guns. Frankly I don't know much about this stuff, as I am not a TV person. Surely there is a manual available online.

lnx64
09-08-2012, 12:06 AM
I can't find anything Sadly.

lnx64
09-08-2012, 12:14 AM
Ok it's RF 300Ohm, just clamps on the screw terminals.

lnx64
09-17-2012, 11:48 PM
Doesn't work. Has the brightest hum bars I have ever seen, but does appear to make patterns, but some locking issues.

Took it apart, and I see these wonderfully old caps.

http://img.photobucket.com/albums/v395/Evilweredragon/IMG_1072.jpg

Yea, lets fix that before it's powered again.

dieseljeep
09-18-2012, 10:42 AM
Doesn't work. Has the brightest hum bars I have ever seen, but does appear to make patterns, but some locking issues.

Took it apart, and I see these wonderfully old caps.

http://img.photobucket.com/albums/v395/Evilweredragon/IMG_1072.jpg

Yea, lets fix that before it's powered again.

That baby is really old! All discrete circuitry.
The old style 'lytic is dated 1966. :D

dieseljeep
09-18-2012, 10:49 AM
Model V6-B.
That was my first color generator. They were about $30.00 cheaper than the B&K. I kept it plugged in while I was installing the CRT, so it would stabilize, when I was ready to use it.