A couple of ideas: 1. Build a simple voltage regulator capable of the current you need for the controlled stage. I think about a couple of amps, but you could insert an ammeter and actually measure it. Set your radio to 1.5 watts and then set the voltage to whatever gives you the desired output.
2. Build a 3 dB pad capable of 5 watts or better. The easiest way to do this is a coil of RG58 that is about 30 ft long. RG58 has about 1 dB per 10ft loss at 450MHz. Then you could set your radio to 2.5 watts out, and your amp would see 1.25 watts. Then attach your controlled line to 12v, and set your output power by the GM300 level. The GM300 should work fine at any level above a watt or so. Joe --- [EMAIL PROTECTED] wrote: > Hi All, > > I have an application were I am using a 10 watt GM300 to drive a > Micor 75 > watt PA. I have a couple of concerns about this and I thought it > would be > better to ask the group than to blow up the PA and the GM300 (good > idea, right?) > > I set the GM300 for 1.5 watts drive (Is 1.5 watts ok for a 0-10 watt > GM300?) > > I connected the control line to A+ ( the book says 6-10 v, but I've > told > this is OK, I question that logic.) > > Keyed up, 105 watts! Turned GM300 to 1 watt, got 90, 3/4 watt got > 80! > > OK, I'm blowing smoke, but I'm afraid of white smoke in cabinet! I > would > like to get this drive back to 1.5 -2 watts (protect the GM300 and > prevent > spurs) and get this PA back down to 70 watts > > Any easy way to control the control line? > > I'm missing something easy here, so flame suit is on! > > 73, Brian > > > > ************************************** See what's new at > http://www.aol.com > ____________________________________________________________________________________ Be a better sports nut! Let your teams follow you with Yahoo Mobile. Try it now. http://mobile.yahoo.com/sports;_ylt=At9_qDKvtAbMuh1G1SQtBI7ntAcJ
