The obvious way to get the radio onto 11m is to change the band crystals, which are available but expensive. This mod appears to pad the VFO so it runs 5-6.3Mhz instead of 5-5.5Mhz. There's a YouTube video in Spanish but cant find any more info on how its done. Is anyone knowledgable on this particular mod please ?
https://youtu.be/Q0Sj8rnHOLM