Mike:
Back in November I measured an old DLW filter. Unfortunately, I don't
remember the specific numbers for BCB rejection. The filter is down on
Bonaire and I won't have access again until my trip in March. I will
say though that the rejection numbers were very similar to the filter
shown at http://www.dlwc.com/.
At that time I also measured a Morgan (old ICE) M-402X and, as memory
serves, the BCB rejection numbers were >60dB. If you are pushed for
time and really interested, I happen to have that filter right here and
could run a set of numbers for you.
73 charlie, k1xx
On 1/30/2022 4:57 PM, Mike Ryan wrote:
There have to be dozens of readers here who have or HAVE HAD AM broadcast
AM radio interference on 160m and even on 80m. I found some old
contributions to the subject where the DLW filter was suggested. I have a
friend who uses one by K7FP. I wonder if anyone would care to share their
experience here. I need to pick up something asap but before buying I just
thought I would ask for feedback on actual experience with any brand or kind
of filter. By FAR my greatest offender is at 1420AM which is less than one
mile from my qth. Thanks. - Mike, K4CVL
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