Two tone tests performed on resonators and filters fabricated from YBCO thick film coated, three dimensional resonators, indicate the importance of understanding intermodulation distortion. The films in this investigation were produced by reactive texturing and melt processing. The generation of third order intermodulation (IMD) products was observed at elevated if power levels. Correlation between IMDlevel and if field dependence of surface impedance is demonstrated. The contribution of grain boundaries to IMD is discussed in terms of the resistively shunted junction model.

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PbO/B203-based glass coatings were applied to monolithic YBa2Cu30x wires. Smooth, dense coatings were obtained by heating in O2 at 375 "C for 0.5-1.0 h. The coatings did not affect superconducting properties and provided mechanical strengthening.

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