Hi again Carl!
You don't by any chance happen to have Ten
Tec's 500 Hz filter do you? Would be very interested to
see what you notice about it. I'm still considering
whether to order any optional filters at all but was
leaning toward the Inrad 400 Hz. Beginning to wonder
if Ten Tec's 500 Hz might be a better choice since I'm
worried about getting TOO narrow for contests. Do
you happen to know what the actual 6 dB bandwidth
for Ten Tec's 500 Hz is? Inrad's 400 Hz is actually
455 Hz per the plot on their site. Surprised you saw
2 S-units insertion loss on the 250...Inrad's shows
6+ dB.
http://www.qth.com/inrad/
73, Bill
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