acceptable the coated aluminum wire may be woven onto the core in one or more layers of ribbons with two layers being preferred such as illustrated in fig5 by top layer 40 and lower layer 42 any weave pattern may be used although the herring bone pattern shown in fig3 has found wide acceptance in a further embodiment aluminum wire may be woven onto the core with another type of wire that is less compressible than aluminum to reduce the degradation of shielding effectiveness due to cold flow the less compressible wire provides a support for the aluminum wire so that compression is eliminated or reduced when the shield is compressibly attached to the backshell by the strap for example tin plated copper wire may be placed at intervals among the aluminum wire to prop up the aluminum wire albeit with some increase in weight associated with the use of copper instead of aluminum the interval may be appropriate for the application and may be chosen in view of the type of weaving machine being used for example in a weaving machine having 24 spools the number of copper wire ribbons used may be any whole number factor of 24 e g 2 3 4 6 etc the less compressible wire may be mixed with the aluminum wire and is preferably provided in whole ribbons as illustrated in fig5 ribbons 36 of coated aluminum wire being mixed with ribbons 38 of less compressible wire as further illustrated in fig5 the ribbons of less compressible wire 38 such as tin plated copper wire may comprise about one third of the ribbons test results have indicated that the shielding effectiveness of the double layer chromate.