The/3+ spectra of neutron-deficient nuclei with mass numbers 103 and 104 have been measured, using a semiconductor beta spectrometer. The nuclei were produced by on-line mass separation of reaction products formed by bombarding an enriched Mo target with Ne ions. Values for Q~c have been deduced. The decay energies are in agreement with systematics. The decay of 1~ shows remarkably strong feeding to levels above 5 MeV. In addition, Q~c values for 1~ l~ l~ and l~ have been determined.