Chris,
The KX2 and KX3 use 12V switching levels for sending data out its serial
port. It was designed to interface to "standard" RS232 serial ports.
I'd use standard RS232 levels first. If that doesn't work, and If the
PTC modem in TTL mode is protected from 12V levels, I'd try that next.
73,
Lyle KK7P
On 2/17/17 5:12 AM, Chris via Elecraft wrote:
... Does anyone know whether the KX2 and
the KX3 use the TTL or the V24 protocols and whether connecting to the
wrong protocol will cause damage?
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