Multifrequency observations of the eclipsing symbiotic triple system CH Cyg during the 1992--94 active phase

We present UBV photoelectric photometry, plus optical and ultraviolet low- and high-resolution spectroscopy and MERLIN, VLA and JCMT radio/mm-wave observations of the symbiotic star CH Cyg during the period 1989.7 — 1995.5 which covers the recent (1992) outburst.