Assembly?

[JKnightandKARR]

This is what I need to hook it to my tv.  Know any tricks I can use to do this?

These are matching transformers for when you're trying to connect a 300Ω 2-wire lead from an FM antenna to the 75Ω coaxial connector on the back of the TV.

I'm pretty sure that there is a matching transformer in the box that I sent to you.

I took the one I bought appart and have made the circuit using 2N3904, 33 ohm and 100 ohm resistors. I have the 33 ohm resistor soldered to the output, and the 100 ohm resistor to gnd, still need to hookup the input and 5V using ext wires, which I need to dig out.

Well, there wasn't the adapter in the box, but I found one in the basement while I dig out the RF converter from my old NES/SNES systems, nothing there, I also tried the adapter I found in the box, nothing from it either, so while I can't try it on the system I got from the Antique mall, cut the wire from the pcb to the rca jack, so might go ahead and use my scope, to probe the PCB on the UCLA, whatever it's called, and see if there's an output signal on either system as well as where the signal pin is, also need the clips that came with my cheap LCR meter to test the transistor I used.

So either A)The systems so far don't work and have to be repaired, or B) Even though my TV has a coax jack, it DON'T like the systems at all...  Guess I could try them through my VCR on my other tv...

[Chris Savage]

So either A)The systems so far don't work and have to be repaired, or B) Even though my TV has a coax jack, it DON'T like the systems at all...  Guess I could try them through my VCR on my other tv...

Too bad you don't have something with a known good signal for verification.

[granz]

Too bad you don't have something with a known good signal for verification.

Yeah, a television signal generator would be great.

Do you happen to have a Raspberry Pi Zero (2, W or 2W)? They have composite output:

This is for the original Pi Zero (or Zero W), and the article about it is at: https://magazine.raspberrypi.com/articles/rca-pi-zero

The Zero 2 (and 2W) have solder pads for composite out:

And the forum posts about this are at: https://forums.raspberrypi.com/viewtopic.php?t=381237

Note that most Pi computers have composite out, I just mention the Pi Zero because of it's extremely low price. If you have the original Pi, it actually has an RCA connector on the board.

[JKnightandKARR]

So either A)The systems so far don't work and have to be repaired, or B) Even though my TV has a coax jack, it DON'T like the systems at all...  Guess I could try them through my VCR on my other tv...

Too bad you don't have something with a known good signal for verification.

I have an Atari 2600 amd the ZX81 power supply should work in it, same jack n voltage. Gotta try it.

Too bad you don't have something with a known good signal for verification.

Yeah, a television signal generator would be great.

Do you happen to have a Raspberry Pi Zero (2, W or 2W)? They have composite output:

This is for the original Pi Zero (or Zero W), and the article about it is at: https://magazine.raspberrypi.com/articles/rca-pi-zero

The Zero 2 (and 2W) have solder pads for composite out:

And the forum posts about this are at: https://forums.raspberrypi.com/viewtopic.php?t=381237

Note that most Pi computers have composite out, I just mention the Pi Zero because of it's extremely low price. If you have the original Pi, it actually has an RCA connector on the board.

I do not. Is there a way to hook them up to the system or something?

[granz]

I do not. Is there a way to hook them up to the system or something?

I don't know what you mean by hook them up to the system or something. The Raspberry Pi is a system in itself. If you just load the Pi OS, with the changes mentioned in those links above, the Pi will give the desktop video out on the composite pins/RCA socket. You plug that into your monitor/television to verify that the monitor works. That will give you the something with a known good signal for verification that Chris mentioned.

So either A)The systems so far don't work and have to be repaired, or B) Even though my TV has a coax jack, it DON'T like the systems at all...  Guess I could try them through my VCR on my other tv...

Too bad you don't have something with a known good signal for verification.