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Test Equipment HDMI to RF converter

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gschwab
(@gschwab)
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Hi everyone,

I've been reading the posts in this forum for a while now, amazing what you guys come up with!

I'm a bit of a collector of old electronics in general, not so much for the sake of collecting, but more for the fun of working on them and using them. As there are no more analog sources available here in Germany (and I guess most places these days), I'm looking for a good solution to supply an analog signal derived from an HDMI signal to my TVs. I have bought an HDMI to Scart converter, works ok in combination with a VCR, but the aspect ration is not correct for old TVs (16:9 instead of 4:3). I can compensate this by changing the image height, but I'm reluctant to do that. I also found a cheap HDMI to RF converter with a small remote (white box, from China), it does everything I want (aspect ration, image size,... can be changed), but the image quality is rather poor. On several TVs, there are massive hum bars, image ist not stable and so on.

I am now wondering if any of you had any recommendations. I have looked around the forum and have seen posts about various converters, however I was unable to determine if they had the ability to adjust the aspect ratio. I'm open to all suggestions, would be great if someone could help me.

All the best,

Gunther

 

 
Posted : 30/08/2023 10:36 am
Doz
 Doz
(@doz)
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@gschwab Sack the nasty supplied power supply, and fit something better. I did a review on that converter on my youtube channel, and that PSU was never going to last long. If you're feeling it with a laptop, changing the resolution alters the image quality quite dramatically. Basically the harder it has to work, the more "grainy" the image becomes.

 
Posted : 31/08/2023 2:20 pm
gschwab
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@doz Thanks a lot for your reply! I actually have thought about replacing the power supply, will definitely give that a try now. Where can I find your YouTube channel, would love to check out the review!

 
Posted : 31/08/2023 2:25 pm
Doz
 Doz
(@doz)
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@gschwab Doz Television Workshop

 
Posted : 31/08/2023 2:41 pm
gschwab
(@gschwab)
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@doz thanks, I actually just found it using the search tool, great review! I will play around with it a bit more.

 
Posted : 31/08/2023 2:46 pm
gschwab
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@doz just a quick update: I played around a little more and at least on a Sony CRT TV from the 90s, it actually works pretty well! I guess I always made the mistake of using the UHF signal, the VHF signal seems to be much better. Now, I just have to find out how it works with my older sets...

 
Posted : 01/09/2023 7:08 am
Doz
 Doz
(@doz)
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@gschwab being in England, it's rare for a 625 line set to be fitted with UHF, so I haven't tried the VHF options.

 
Posted : 01/09/2023 9:17 am
gschwab
(@gschwab)
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@doz here in Germany, it seems that most sets were equipped with both UHF and VHF since the start of the second channel (ZDF) in the early 60s. Older sets only had VHF and needed an external converter to receive the new channel.

 
Posted : 01/09/2023 9:53 am
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