folks. looking at using this epay chinesium dc dc converter for portable operation.  does anyone have experience with using these as far as quality, receiver noise, etc
 
https://www.ebay.com/itm/283294832260
 
DC-DC 12-90V to 12V-130V Boost Converter 900W CV CC Step Up Voltage DC Module Xr
 
thanks Jeff N2IA