[AMRadio] Question for K4KYV

I am not Don, but since he hasn't answered, I remember he found a filter at some surplus place in the Washington, D.C area back several years ago. Seems like the cutoff was 3400 Hz on the nose. Not a very expensive part then, but IIRC fron his post of this last year, there are unobtainum now. J

Re: [AMRadio] Question for K4KYV

I am not Don, but since he hasn't answered, I remember he found a filter at some surplus place in the Washington, D.C area back several years ago. Seems like the cutoff was 3400 Hz on the nose. Not a very expensive part then, but IIRC fron his post of this last year, there are unobtainum now.

[AMRadio] Re: Early taste of winter AM

Yes! Last night and early this morning were much like a preface to what I look forward to in the Winter on 75 (and 160) meter AM. This morning about 6:00 the noise floor here was about S-3 (abt -140dbm) with no static crashes from lightning. Actually worked some closer AM'ers (KA5RHK and WD5BZO

[AMRadio] Early taste of winter AM

75 sure was nice last night for the first time in months. Had a nice qso with W5AMI and some local AMers early in the evening and could hear many DX stations (MN, CO, ME) :) later that night. Don, K4KYV was booming in here as usual. Would have given you a call, Don, but you were signing ou

RE: [AMRadio] Question for K4KYV

I second that request! Ed, VA3ES - From: Radio Station W5AMI Don, A month or so back, I sent you a screen shot of your audio spectrum because I was so impressed about how well your brick wall filter cut off the high end just right.

[AMRadio] Question for K4KYV

Don, A month or so back, I sent you a screen shot of your audio spectrum because I was so impressed about how well your brick wall filter cut off the high end just right. I wonder if you could describe the circuit you use to obtain the level of accuracy you have on the cutoff freqs to the list?