[Elecraft] CM-500

[Jim Brown]

On 11/7/2020 2:42 PM, Bill Frantz wrote:
> The packaging said (in part), "Dynamic Microphone for Active Musicians"

The sales/marketing department, usually ignorant of what they're 
selling, wrote that drivel you're reading, which is intended simply to 
sell more of whatever they're selling.

The CM500 has had an ELECTRET mic as far back as 2008, when W6XU, 
another audio professional, arranged a group purchase for your Bay Area 
contesting club. It DOES need Bias, which most modern rigs provide on 
one pin of their mic connector. Simply adding a resistor of suitable 
value (in the range of 5-10KOhms) between that pin and the mic input 
pin, provides bias suitable for most electret mics.

73, Jim K9YC