WAY back in 2004, WA6ILT posted the following:

I replaced the Icom with a TS-2000 and got an SSB Electronics DCW-15B

sequencer/bias tee to control and power it. What is *not* clear from the TS-2000 manual (Page 96) is that you need to set a "linear amplifier delay" for each band via the proper sub-menu item under menu number 28. The default is "off" and I thought I had to worry about a delay *only* if I was running a linear. Wrong! Without a delay set the rig won't sink the controller on transmit. Bye-bye preamp.

I also have an SSB preamp on 70cm but that one does RF sensing so it didn't burn up, thank goodness.

Dave Reinhart wa6ilt@amsat.org

I don't have exactly this setup, but I wanted to confirm something that is never said in any of the docs I have ever seen:

Suppose you set on of the Menu 28 submenus, which are called Linear Amplifier Delay, to 25ms. Exactly what is delayed? Are we saying that the connector on the back is activated immediately on PTT (to turn on the Linear or off the Preamp via the Ext. Cont. connector) but that the internal transmitter is not turned on for 25ms? That makes sense--it almost HAS to work that way, but no one ever actually SAYS that which makes more worry that I don't understand it. I'd almost rather have the activated immediately, but require some further input (say the PTT line on the ACC jack) to actually start the transmitter. I.e. have more control :-)

Thanks and 73,

Burns WB1FJ