[Elecraft] Microham Station Master Inhibit -> K3 ?

[ae4pb at carolinaheli.com]

Refer to the owners manual for the TX inhibit signal page 19.
The pin 7 can be configured for TX on OR TX inhibit. I'd suggest using two
resistors as a voltage divider so the pin voltage is never above 5VDC per
the manual. 



-----Original Message-----
From: Elecraft [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Marco
HB9CAT
Sent: Thursday, August 20, 2015 7:24 AM
To: "Reflector"
Subject: [Elecraft] Microham Station Master Inhibit -> K3 ?

Hello,

I'm optimizing the shack setup and taking a more careful look at hot
switching; Antenna switching is managed through a couple of Microham Station
Masters, which provide an Inhibit Output as cinch connector. So Inhibit will
be set during any Antenna transtition to protect the switches, the PA etc.

According to the Microham manual this output is provided to be connected to
Yaesu, TenTec and Elecraft transceivers; I was tempted to plug it directly
into my K3, but I decided to measure the voltage on the Station Master's
Inhibit out connector: it's 13V.

Question 1: Is that voltage OK to be connected to the Inhibit pin in the
K3's ACC connector ?
I prefer to ask before doing it.

Question 2: I assume Station Master's Inhibit is active when this signal
goes to 0V, so K3's TX INH configuration shall be LO=INH. Anyone has
experience ?

Question 3: Station Master is controlling a SteppIR antenna: does Inhibit
activate during the antenna tuning procedures ?

Thanks

Marco, HB9CAT

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