I'm just wondering if you ops with the A4's and R4C's are using these in conjunction with your new technology rigs by just remote muting the old receiver? If so isn't it kind of difficult to spot the desired operating frequency? -- FAQ on WWW: http://www.contesting.com/FAQ/topband Submissions: topband@contesting.com Administrative requests: topband-REQUEST@contesting.com Problems: owner-topband@contesting.com