On 16/12/21 22:22, Bob Benedict, KD8CGH wrote:
The November/December 2021 issue of QEX has an interesting article on making and calibration SMD test tweeters for use with a Nano VNA starting on page 61. Any ARRL member has free access to QEX as well as QST.
Page 19 :-)
- Roland 9V1RT