=5v or LO=grounded. Leaving pin 7 unterminated
(floating) will result in erratic operation.
73, Ed - KL7UW
--
From: Brian Moran
To: Elecraft Reflector
Subject: [Elecraft] TX_INH input (pin 7 on ACC) behavior
With my early K3, I'm attempti
Don is correct.
FYI, after looking over the K3 schematics with N6KR at Visalia many years
ago, we came up with a safe and simple "SO2R" lockout circuit (given two
K3s) that is documented here:
https://bit.ly/K3lockout
The 470 ohm resistor is a safety feature designed to prevent a potential
short
Brian,
That is not how you implement a pull-up resistor.
Connect one end of the resistor to a +5 volt source. Connect the other
end to the TX INH pin.
Then connect the control line between the TX INH pin and ground.
If the control line is an open circuit when it should be inhibiting, set
the
Yes, floating. Indeterminate if feature enabled & line not set externally.
(Guess how I know..? hi)
73
Josh W6XU
Sent from my mobile device
> On Oct 19, 2018, at 9:47 AM, Brian Moran via Elecraft
> wrote:
>
> With my early K3, I'm attempting to control the TX_INH line on the ACC
> Connecto
With my early K3, I'm attempting to control the TX_INH line on the ACC
Connector, and am finding this odd (to me) behavior.
Starting with the radio off, I'm driving the pin with either 0 or 5v through a
6.6K resistor per the Elecraft manual. I set the TX_INH mode to HI in the
config screen, and
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