[Elecraft] K3 - FSK hookup to ACC connector

[N2TK]

Lyle,
Tnx for the info.

Both pins measure 5V. I set up both lines with NPN's.

When I plug in the cable to any COM port I go into transmit mode. It seems I
am getting 11V on pin #7 on any of the 4 Com ports on my PC. Do you know if
I need to change the configuration of my COM ports so I don't get the 11V
all the time? 

In the meantime I am using PTT over the radio control serial cable.

73,
N2TK, Tony

-----Original Message-----
From: Lyle Johnson [mailto:kk7p at wavecable.com] 
Sent: Wednesday, April 09, 2008 9:32 AM
To: N2TK
Cc: 'Elecraft Reflector'
Subject: Re: [Elecraft] K3 - FSK hookup to ACC connector

> Pin #4(PTT IN) doesn't state it also has a 5V pull-up resistor. Does it so
I
> can use the same NPN type setup?

PTT has a pull up.

73,

Lyle KK7P