Re: R4B 50 Khz I.F. sweep.
¿ªÔÆÌåÓýWhen I sweep something like this I feed in the tracking generator signal, preferably a stage before, through with around a 10k resistor. ?The I preferably use an FET probe to pick off the signal that goes back into the spectrum analyzer. ?A 10X passive probe may work but the termination will be wrong. ?You likely won¡¯t be able to measure the ultimate rejection of the filter, but you can see the passband shape you are possibly tweaking. ?
Rob, NC0B On Mar 19, 2023, at 6:25 PM, W6MQI via groups.io <w6mqi@...> wrote:
|
Rob Sherwood