[Icom] More on isolation relay (Adam)

[W3UIO]

> << A local ham fused the contacts in his ICOM the
> first
> time he tried it with a non-ICOM amp. The amp would
> not unkey. >>
> 
> Wonder what amp he was using, and what the
> keying-line voltage and current
> were?
The rig was the 756 (not Pro), and the amp was a
Heathkit which uses 3-500Z's. May have been an SB-220.

I think the Heath amps had lots of voltage on the
keying line.

Many thanks for all your comments and your expertise, Adam.

=====
Larry, W3UIO

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