Rca 621TS

[miniman82]

If you have a crystal stabilized rig you can run through video first, then go through audio and make sure it matches up channel for channel. If you don't have crystal stability it doesn't much matter, since you'll likely wind up doing both multiple times till they get close.

[Crist Rigott]

OK, here is where I am on the alignment.

The video IF response curve is a bit peaked but I'm getting a great picture.
The audio curves look real good too.

When I'm playing a DVD the picture and sound are great.

When I'm OTA using my converter, the picture is great but the sound is pretty muffled. When I change channel 3 or 2 I get real good strong audio from the local FM stations.

I can't play OTA using channel because there is too much interference with the FM stations.

I tried adjusting the slug for channel 4 and the audio improved but there is still a marked difference between a DVD and OTA audio.

Any suggestions as to where to look? Does the tuner frequencies need tuning on channel 3 and 4?

Thanks.

[Crist Rigott]

Well, it looks like my converter is bad. I tried my other converter and had great sound! Too bad the picture quality isn't as good as the one with bad audio.

The good thing is that the TV is playing very well.

[Kevin Kuehn]

Don't those digital converter box thingies have separate composite video and audio outputs that can be run into a high quality agile modulator? I'm assuming the internal modulator is the weak link. Believe it or not I've never dealt with one of those converter boxes as we haven't had any broadcast TV signal entering our home since a few years back when we cut the local cable company off.

[Crist Rigott]

Originally Posted by Kevin Kuehn

Don't those digital converter box thingies have separate composite video and audio outputs that can be run into a high quality agile modulator? I'm assuming the internal modulator is the weak link. Believe it or not I've never dealt with one of those converter boxes as we haven't had any broadcast TV signal entering our home since a few years back when we cut the local cable company off.

Kevin,
Yes, they do have some separate outputs. I'll give those a try.

[Crist Rigott]

I finished making the masters for the labels on the back of the chassis. Now I need to get some of the grey/silvery paper and some off white paper for the "Caution" label. Then run them through my laser printer and then glue them on the chassis. Pictures to follow when I have them printed out.

[Crist Rigott]

Here are the labels on the back of the chassis. What do you think?