Old crt tv question

[ant888rvlu]

Hi, would it be possible to connect a 3.5 mm jack with a rca audio/video cable to the ext ant port on my old crt t.v.? Can this be used to get cable on my old tv?

 

[kanewolf]

No. The coax (antenna) port on a TV requires radio frequency inputs, that are analog. A 3.5mm jack has analog video and audio which is not a radio signal. They DO make devices, called analog RF modulators, that will convert your RCA jacks to a signal that could be received by your old TV -- https/www.amazon.com/RCA-Compact-RF-Modulator-CRF907A/dp/B0014KKV7W

 

[ant888rvlu]

What if the t.v. only has an ext ant port? Will the rf modulator still connect to it?

 

[kanewolf]

What if the t.v. only has an ext ant port? Will the rf modulator still connect to it?

That is the purpose of an RF modulator. It creates a TV signal like would be delivered from a broadcast TV channel. The coax output of the RF modulator would go to the antenna port on the TV.

 

[ant888rvlu]

My ext ant port looks like a 3.5 mm headphone jack though. I thought coaxial cables can't connect to that?

 

[kanewolf]

Without pictures or a model number or more technical info I can't tell you. TVs don't generally have 3.5mm jacks for antenna inputs. There are some that look like this -- http/columbiaisa.50webs.com/jack_uk_rf_socket.jpg

 

[ant888rvlu]

How can I attach a photo?

 

[jsmithepa]

attach a photo

Have to upload to one of the many host sites, and post the LINK here.

Post clear pic of the back with all connectors, hopefully including label model/make.

 

[kanewolf]

How can I attach a photo?

Here is the STICKY on posting photos -- http/www.tomshardware.com/faq/id-2580030/detailed-instructions-posting-images-tom-hardware.html

 

[ant888rvlu]

http/imgur.com/RpJvAF8
http/imgur.com/IEdTPCs

 

[jsmithepa]

I wager it needs a RF analog input.

Just about everywhere, u didn't disclose where u are from, OTA (antenna) signals is been converted to digital, so for this to work, u will need an ATSC converter, and if the station(s) broadcast in HD (high definition) the image will look crap.

If u want hook up to your existing cable provider, look for a Video Out on the set-top box, then add a RF Modulator.

 

[ant888rvlu]

Would I need an adapter for the rf modulator to connect to the 3.5 mm port?

 

[kanewolf]

This picture

shows the adapter that it came with. It had a 300 ohm input to a two position 3.5mm jack. That adapter converted from 300 ohm flat antenna wire to the 3.5mm plug.

So my first link recommending an RF modulator is still correct. But an additional adapter to convert from standard coax to 3.5mm is required -- https/www.amazon.com/Female-Coaxial-Adapter-FM-Antenna/dp/B00BBYRDG8

 

[ant888rvlu]

Is making one of these adapters possible?

 

[kanewolf]

Is making one of these adapters possible?

Your original question asked about red/white/yellow RCA connectivity. If that is still your question, then NO you can't make an adapter. You have to convert the RCA signals to radio signals (what the RF modulator does). You can't make one of those.

 

[ant888rvlu]

I meant the 3.5 mm to coax adapter

 

[kanewolf]

I meant the 3.5 mm to coax adapter

I don't know of an easy way to do so. I guess you could solder the center conductor to the middle of a 3.5mm plug and the shield to the other conductor. But soldering coax is difficult since you tend to melt the insulation around the center conductor. Is it possible. If you have good soldering skills, I suppose so. Or you could spend $3 on the correct adapter.

 

[ant888rvlu]

Okay. Can the tv be used as a radio in any way?

 

[kanewolf]

Okay. Can the tv be used as a radio in any way?

This amazon page -- https/www.amazon.com/Spectra-52-BWR-W-Portable-Television-Radio/dp/B0000DD9TB says it can be used as a radio...

 

[ant888rvlu]

I just managed to find this piece; http/imgur.com/YmRJ2u3

Is that an Adapter? Can the modulator connect?