Tangxi HDMI Modulator RF Modulator for PAL NTSC Format, Composite VHF UHF AV to RF Converter, RF Modulator TV Audio Video Converter for Home TV(F Female)

Though the box it came in is marked as NTSC and the model number, inside there's no hint to what type it is. Unfortunately it is stuck in PAL mode, though it's supposed to work both signals . The Mode switch which is not label as such , but as CATV/TV/AU, which is confusing, only shows from C1-C4 and AU. spent hours playing with it to no avail. Furthermore when I set it to channel 57 in C4 it displayed on one TV channel 14 and in another 65, which makes no sense. Under C4 Channel 57 the video shows, but is incompatible with NTSC and only shows very bright black and white video. If I adjust the video bright to lower, then the picture disappeared. Could not contact seller for instructions and then I returned it. Either the Mode switch is defective or the wrong item was placed in the box.

Why did you pick this product vs others?: I got this converter to hook stuff up to an old TV I had acquired with RF only input. I got it all hooked up, and when I plugged my laptop into it, the signal was awful. No matter how much I tried, I just couldn’t get it to output clear video with HDMI input. It did work perfectly when I used composite video with a SNES, I don’t have a picture but it did work. The main point is that I got it hoping I could connect modern things to an old TV, and it didn’t do that at all.

I was led to believe that this would actually BROADCAST OVER THE AIR to a nearby TV. The only way I can get it to work is by running a coaxial cable from it to the TV. If this is not possible, then I will return it.

No es fuerte se daño muy rapido

The unit accepts up to 1080P HDMI input, but downscales all outputs to SD. It worked fine and all controls were functional. I tested it on a current 16:9 HDTV, and an 4:3 80s CRT video monitor. Audio, Color and SD clarity were good. Unfortunately, It does not correct the 16:9 input aspect ratio to 4:3 output for CRT. Any 4:3 CRT will just squish the 16:9 image inward horizontally so everything onscreen is very thin and elongated. I hoped to use this unit as an HD PIP input for my HDTV, but it doesn't pass HD through the RF coax output like an OTA antenna does. Some audio and image problems were reported in previous reviews, but I suspect user error or defective units.

We purchased this as a “quick fix” to get video from one place in the house to a TV in a different area of the house, until we can rerun cables. Before I went through the work to install the device for its intended purpose, for testing, I connected a modem Xbox to the HDMI of the device and fed a short piece of coax into a small (<30”) modern flatscreen TV. The channel selection interface needed a bit of basic understanding of different worldwide broadcast frequencies/standards to find the “channel 3” for our country. The image quality was low - text was double imaged/ghosted/blurry. I’ve seen similar behaviors from a Xbox when using bad HDMI cables and it downscales to the lowest resolution and HDMI protocols. Alternatively, this could be the device introducing the ghosting. Either way, for a device which lists 1080p resolution, it’s not able to achieve that resolution and picture quality in this configuration. Although this device says it’s HDCP (HDMI copy protection) compatible, when trying to watch a Blu-ray from the Xbox on the TV the video player app froze (no error about HDCP not supported, just froze). Launching streaming services was successful, but didn’t try to watch a full video or multiple apps. To try to reduce the ghosting I tried to adjust the dials, which require a small Philips screwdriver. A normal household screwdriver is too large of a diameter to fit into the holes and a small “pen” or eyeglass screwdriver is too small to engage the dial. I’ve seen many dials which are both slotted and Phillips head — this is not one of them. Although a small standard (straight) blade screwdriver would have easily fit through the cutout in the case, the lack of the dial being able to accept either made this not an option. After about a half dozen screwdrivers, I found one which fit (barely) into the hole and could turn the dial. The video adjustment dial seems to simply be brightness and had no noticed effect on video quality.

worked like a charm for my older crt! only complaint is the resolution stays 16:9 no matter what, even if the input is 4:3; but im using it for pc so im okay with that but could be very annoying for some!

I got this modulator since it is very moderately priced and claimed to support a variety of PAL flavours along with NTSC...and has hdmi input. It works very well. It correctly modulates NTSC, PAL-B, PAL-G, PAL-I, and PAL-D/K. I only wish that it supported PAL-N, but when you select 4.5MHz audio carrier NTSC is the only option. I wish PAL-M and PAL-N weren't so hard to find, but the five signals it does generate are perfect. I'm giving it four stars because of the strange way it breaks up channels into blocks. It does VHF and UHF but you have to select bands of frequencies for it to test against. Minor issue that is completely ok to deal with.

Lo usé para ver anime viejito en una tv antigua desde mi laptop y funciona bastante bien. Cómo recomendación, si lo van a usar de la misma forma cambien la resolución de su PC a 480p

It works. Only needed to try a few settings and the old RCA tube screen came back to life connected to the new Rogers Ignite style set-top boxes. No qualms!

Très satisfait fonctionne a merveille !!!

To add insult to injury, the unit is missing three control knobs.