N4PY:
>I just measured my 250 hertz filter in my Orion at 258 hertz
W4ZV:
>Thanks Carl...exactly what I needed and how I measured the 500 Hz!
Now I'm wondering why the 500 Hz was so far off.
Mystery solved. The filter was actually a 218 which is plainly
marked on the top of one of the crystals nearest the center. I had
set my DSP to what I thought would be well above the 250 Hz BW, but
since the crystal filter BW was actually 1800 Hz, I was really just
measuring the BW of the DSP filter instead of the crystal filter.
WTB...a REAL TenTec 219 250 Hz filter.
73, Bill W4ZV
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