Reddit mentions of Women's Needs: Report to the 1983 General Assembly of North Carolina, 1984 Session (Classic Reprint)

I bought this for my Sony CPD-E540

https://www.ebay.com/itm/Delock-Adapter-DisplayPort-1-2-Stecker-VGA-Buchse-Adapter-Cable-Delock-NEU/133139481368?hash=item1effbb4318:g:BR8AAOSwQOxdT6cJ

But at less than 100 kHz, you might just be able to use an cheap HDMI or DP to VGA adapter from Amazon. You'll get a green outline if the refresh rate exceeds the adapter.

People also say you can get an RTX card and use USB-C to VGA adapter which apparently handle very high refresh rates.

Either an HDMI->VGA DAC or a DP->VGA DAC is what you'd be after.

The former are cheaper for the most part, but not really capable of more than 1080p60(and it's 4:3 equivalent) to 1200p60(more so it's 4:3 equivalent UXGA). You'd need to move to a displayport based offering such as certain offerings from Sunix or Delock to go higher than that. Admittedly, that monitor won't be able to max out the latter, but is in the weird middle ground of "capable of more than the HDMI adapters but not quite high end enough to heavily justify the DP options".

This is the HDMI->VGA I usually recommend; https://www.amazon.com/Portta-3-5mm-Audio-Converter-support/dp/B003O55U8K/

I like it specifically because of the option to use an external power supply, which will allow it to work with devices which might not supply enough power over HDMI to run it that way; Stuff like Raspberry Pi and such especially.

https://www.amazon.com/Tendak-Converter-Adapter-Portable-Connector/dp/B01B7CEOVK/

This is also another well recommended offering, especially if you don't need the external power option.

As for DP, this would be the go to for "I just need the higher spec'd DAC": https://www.ebay.com/itm/Delock-Adapter-DisplayPort-1-2-Stecker-VGA-Buchse-Adapter-Cable-Delock-NEU/133139481368

There are DisplayPort MST boxes that do more along with this, but if you just need something for your tube, it's not worth bothering with.