10-12-2020, 12:01 PM
No I can't explain what's happening in your tests.
When you're working with a CT transformer the output will be determined by the current swing in the 1496 multiplied by the transformer ratio multiplied by the load on the secondary. If that's sufficient then all well and good. Otherwise you need gain afterwards. The voltage swing across the load will be reflected back to the 1496 outputs via the transformer. At RF you obviously want a fairly low load resistance. From memory the Band I modulator delivers about 50mV (probably p-p, not RMS) into 75R but it could be a little more.
When you're working with a CT transformer the output will be determined by the current swing in the 1496 multiplied by the transformer ratio multiplied by the load on the secondary. If that's sufficient then all well and good. Otherwise you need gain afterwards. The voltage swing across the load will be reflected back to the 1496 outputs via the transformer. At RF you obviously want a fairly low load resistance. From memory the Band I modulator delivers about 50mV (probably p-p, not RMS) into 75R but it could be a little more.
www.borinsky.co.uk Jeffrey Borinsky www.becg.tv
