Larry,
Why not measure the current. Break the positive 12 volt Power Supply
connection and insert your DMM set to measure current. Then short the
keying input line on the relay box. You DMM will tell you how much
current is being drawn.
A new K3 has a 1 amp rating on the 12 volt output. Older K3s can be
upgraded with the kit from Elecraft.
73,
Don W3FPR
On 3/4/2014 6:37 PM, Larry Boekeloo wrote:
Hi everyone...
Has anyone used a Yaesu FRB-757 Relay Box connected to a K3? The FRB-757
requires 12 volts but there is no indication in the instructions if the FRB-757
draws more than .5 amps. My Alpha 87a is going into the shop and I need my
SB-200 as a backup. I haven't had time to put the Harbach Softkey mods in the
SB-200 yet. Too much time playing with the K3!
Thanks.
Larry, KN8N
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