[CQ-Contest] SB-220 Switching help

[Scott Ellington]

Beware!!  The stock SB-220 does NOT have a catch diode across the relay coil. 
As a result, it can fry the switching transistor or relay in the transceiver. 
Make sure the diode is in place before hooking it up.

73,

Scott   K9MA



-- 
Scott Ellington
Madison, Wisconsin   USA

sdelling at facstaff.wisc.edu


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