Bill W4ZV wrote: > > Someone else asked about the filter plots on the Elecraft and Inrad > websites. I believe all of these were made by George W2VJN before > he sold > Inrad to N5KO and AG9A. I hope Elecraft or Inrad might ask George > to graph > the missing filters (all 5-pole and some 8-pole) eventually > (including the > yet to be introduced variable bandwidth filters). If George cannot > do it > perhaps Jack K8ZOA could do this. > > 73, Bill W4ZV > > I asked the question about the filter plots. I have written a > program, with Jack's considerable help, that will allow a K3 to self- > characterize it's filters. As each filter is characterized the data > set can be saved by the user and a simple plot drawn by the program. > All the user needs is a stable, clean signal source to inject into > the K3 antenna port. An advantage of this approach over the INRAD/ > Elecraft plots is they are generated while the crystal filter is > installed in the user's K3, not in a test jig in a laboratory.
The program is called K3 Filter Tools and can be downloaded free from: http://mysite.verizon.net/ks7d Mike, KS7D _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
