  We have observed the starburst dwarf galaxy VII Zw 19 at subarcsecond
resolution with the MERLIN and MERLIN+EVN networks at 18 cm, with MERLIN at 6
cm, and with the VLA in A array at 6 and 2 cm. The galaxy is detected at all
VLA wavelengths and is resolved. It is also resolved at 18 cm by MERLIN, but is
not detected by the EVN nor by MERLIN at 6 cm.
  VII Zw 19 has a complex structure of nonthermal radio emission at 18 cm
extended over ~1200-1800 pc (4-6''). That the EVN did not detect this emission
indicates that there are no obvious point sources that could be radio
supernovae. The 2 cm emission, predominantly thermal free-free emission, has a
markedly different spatial distribution from the nonthermal emission. The radio
colors show that the galaxy contains numerous supernova remnants, as well as
many young HII regions, many of which are optically thick at 6 cm. Two extended
regions of 2 cm emission have little 18 cm flux and are probably emission from
young star clusters. VII Zw 19 resembles M82 in its radio and infrared
spectrum, but the starburst region in VII Zw 19 is twice the size of the one in
M82 and twice as luminous.
