[Elecraft] K3 New owner 2B Checklist

[Jim Brown]

On Mon, 01 Dec 2008 11:52:48 -0500, Gary Smith wrote:

>The key out from the Titan goes to the TX EN of the Omni.
>The Key in from the Titan goes to the TX out of the Omni.
>CW key goes to the Transceiver Key jack

I have three 425s, and have used them in contesting for years using 
this arrangement, which was a way of doing QSK with virtually any 
rig (the 425 was designed before 1980). 

You do NOT need to do this with the K3 -- the K3 has a built in TX 
delay (adjustable in CONFIG) so that the TX/RX relay in the amp has 
time to switch. So simply set the 425 in PTT mode and feed it the 
amp keying line from the K3. I'm conservative, so I set the delay 
for 12ms to give the relay plenty of time to switch. The default is 
8ms. 

BTW -- the FT1000MP and others in that family also have the delay 
built in, so you can use them that way too. 

My 425s drive to full power with around 30-40 watts, depending on 
the band, so the K3 is loafing. Which also means that the power 
supply is only pulling around 10A on transmit. 

73,

Jim K9YC