[CQ-Contest] 419A Bandpass Filter - Value?

[Jim Brown]

On 2/19/2021 10:06 AM, n5xz at earthlink.net wrote:
>   What is it worth today?

Not much -- it's a poor design, under-designed for power, easily blown 
up, hard to repair. Here's a report I prepared for National Contest 
Journal after measuring all those I could get my hands on from NCCC members.

http://k9yc.com/BandpassFilterSurvey.pdf

73, Jim K9YC