The 431A and 432A thermistor can be accurately calibrated with an external precision DC supply. HP made a special box, the 8477A for exactly the purpose.
Best, -John ================ > We all have our various highly accurate frequency and perhaps time > references. Is there a relatively simple and inexpensive method of > making an accurate RF power level reference? If so, then what do we > calibrate it with, not already having such an accurate reference? > > One possibility that comes to mind is an HP 436A power meter. These > are abundant and usually have no sensor probes (which are expensive). > They also have a built in 50MHz, 0dBm reference. However, without more > fancy test equipment, I have no way to calibrate the reference, or > even verify that it is accurate. > > Joe Gray > KA5ZEC _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
