Schematic for Fleetwood/Conrac tuner?

[Phil Nelson]

I ran across this tuner/etc chassis from a Fleetwood/Conrac (model 800?) television. Maybe I can use it to pick off audio and video for a monitor.

Anyone have a schematic? The plate on the back says Conrac model 850. A brochure at tvhistory.tv seems to show it as part of the Fleetwood 800 two-chassis set (see below).

Sams has a manual (311-5) for model 800:

https://www.samswebsite.com/en/photo...index/id/51237

I don't mind ordering from Sams but I'm not sure if that manual includes this chassis (although that seems logical).

Thanks!

Phil Nelson
Phil's Old Radios
http://antiqueradio.org/index.html

[Steve K]

Phil:

The schematic is in Riders Volume 12. I would make a copy of it for you but I am leaving for the airport in a few minutes. Perhaps someone else here has that volume.

Steve

[Phil Nelson]

Thanks for the tip. My library discontinued their Sams subscription (waahhh), but I have found older Riders volumes there in the past. I'll see if they have that volume.

Phil Nelson

[Kevin Kuehn]

It's all in Sams 311-5. I can scan it... but it'll be later tonight, or tomorrow. Schematic will be on four pages.

[Phil Nelson]

Thanks, the Sams would be useful. The Riders manual appears to cover the earlier model 600, whose tuner chassis didn't have as many controls. You can send me email via http://antiqueradio.org/contact.htm if that's convenient. No rush . . . .

Regards,

Phil Nelson

[Steve McVoy]

Could whoever scans the Rider or Sams please send it to us so we can post it on our site for all?

Thanks

[Kevin Kuehn]

Both of you should have the Sams pages in your inbox. Let me know if I screwed anything up.

[Phil Nelson]

Thanks, Kevin, I owe you.

Steve, while I was printing the Sams, I had the copy shop scan my prints of the Riders manual for model 600x. It's sixteen 11x17 pages -- nearly 32 megabytes. Rather than choke your Inbox, I uploaded it to this URL:

http://antiqueradio.org/art/temp/Fle...cModel600x.pdf

Let me know if that doesn't work for some reason.

Regards,

Phil Nelson
Phil's Old Radios
http://antiqueradio.org/index.html

[cbenham]

First, thanks very much for posting the 600 information which I did not realize was available in Rider.

I'm familiar with both these tuners and they are very good and pass color well.

The 600 is easier to deal with in terms of using it with a TV monitor that is not a Conrac/Fleetwood. It is self contained and self powered and simply feeds video and audio to the monitor. It does have a high impedance video output and it will not drive a 75 ohm terminated video input. You can get around this by leaving the terminator switch in the off position or if there is no switch just cut loose one end of the 75 ohm resistor across the monitor input.
One more note on the 600 which is about the distinction between it and the 800...
The 600 has a detector based RF and IF AGC which works well and is the reason for my comment about it being 'self contained'.

The 800 tuner has keyed AGC and gets the keying pulses from the Fleetwood monitor horizontal section via a width coil that has a secondary winding which
is connected through the 8 pin octal cable to the tuner.
This may be a pain to deal with if you are using the tuner 'stand alone' as it won't function well without the H Keying pulses from a TV monitor.
I found a width coil with a secondary on ePay and was able to replace the original in the monitor and all worked well.
It gets difficult if you want to use the tuner 'stand alone' because you will have to either build an H pulse source to drive the tuner AGC or maybe just
hide a small TV chassis off in a dark corner out of sight.
Also if you want to drive a 75 ohm video line with either of the tuners I have attached
information about a two transistor video amp that runs on +5 volts. Subs for the two transistors are very old friends, the 2N3904 and 2N3906.

Hope some of this is helpful in getting pictures with your Fleetwood.

[Phil Nelson]

Thanks for the info, Cliff. I was hoping the 800 tuner could be used as a standalone A-V source like the model 600. That's what I get for buying without researching. Oh well, it only cost $20.

My BK 1077B analyst can output a horizontal drive signal. Perhaps I can use that to trigger the AGC. Not quite the tidy installation I had in mind, but it may be interesting to try.

Phil Nelson