The spec difference is almost impossible to detect in normal usage. It
takes very clean lab signal generators to test.
We're talking about extreme signals that might just start to cause
barely noticeable IMD in the 'bad' filter. Even the 'bad' filter IMD is
better than most other rigs on the market.
It just looks like a one off failure. (This can happen in any xtal
filter from any mfg.)
73, Eric
Jerry Flanders wrote:
At 02:44 PM 6/18/2008, Eric Swartz - WA6HHQ, Elecraft wrote:
Looks like he clearly had a bad 500 Hz filter. It does not match our
measurements here or Sherwood's. We'll make sure the customer gets a
replacement.
Just curious - do you guys check filters before shipping them? Most of
us out here wouldn't have a clue if we had a bad filter - we would
just suffer with poor performance without ever knowing why.
Jerry W4UK
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