a real challange?

[Yamamaya42]

the latest test...

https://www.youtube.com/watch?v=dkHebH7xepU

hooked channel master cm-94444 Balun directly to tuner ( soldered)
added ext RF amp, +15 db

still waiting for other peaking coils and Pot to add the contrast mod.

there is still a slight bit of snow in pic .

but is looking better.

[Kevin Kuehn]

Originally Posted by Yamamaya42

the latest test...

https://www.youtube.com/watch?v=dkHebH7xepU

hooked channel master cm-94444 Balun directly to tuner ( soldered)
added ext RF amp, +15 db

still waiting for other peaking coils and Pot to add the contrast mod.

there is still a slight bit of snow in pic .

but is looking better.

That actually looks quite respectable. Are you using a DVD player, and have you tried any other signal source? You've definitely come a long way with that TV.

[Yamamaya42]

Originally Posted by Kevin Kuehn

That actually looks quite respectable. Are you using a DVD player, and have you tried any other signal source? You've definitely come a long way with that TV.

Yes, it is a DVD player, a cheap one I got a $20 piece of garbage, which I got as a source for working on my CTC-16XL, went ultra cheap so if it was taken out by the HV or whatever, I would not lose anything.
I made the DVDs myself from videos I had on my system so it would be macrovision free.


I put in the contrast mod today, and it does work, not as dramatically as it did in the color set I took it from but it works, most likely cause the CTC-16 has 10v on the cathode at that point, and this thing has about 3v, so perhaps I will put in a larger cap than 50mfd.

I'm hoping that the other 3 peaking coils show up this week, shipped 4/14 from Canada, this pandemic has slowed all mail down

I see that at least the cheap LCR meter I sent for is in the country now, and may be here this week.

no idea when the digital RF generator will show up, when it does I can hopefully clear up that last bit of snow.

[Kevin Kuehn]

Well if you haven't already try another RF signal source. It would be something if your snow issues turned out to be caused by a cheap DVD player.

[Yamamaya42]

Originally Posted by Kevin Kuehn

Well if you haven't already try another RF signal source. It would be something if your snow issues turned out to be caused by a cheap DVD player.

the DVD player itself has no RF modulator, they stopped putting those in years ago when things switched over to digital.

got this

https://tinyurl.com/yaez4lm4

hooked into an RF amp to the TV.