Hi John,
Another source of high Q low ESR ceramic RF power chip capacitors
besides American Technical Ceramics:
http://www.passiveplus.com/index.php
I haven't priced them, though, they look expensive but very strong..
Digikey also offers those capacitors, but most are non-stock items with
long delivery times and large minimum order quantities.
Digikey does give prices. Capacitors of that kind, suitable for legal
limit lowpass filters, cost roughly $20 to $30 each. So for a set of six
elliptic filters (30 capacitors) we would be looking at roughly $800
plus shipping plus taxes, if we find a place that sells them in small
quantities without charging extra. Shudder.
Long live homebrewing!
Manfred
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