[Elecraft] PTT question

I'm getting ready to add a RX array which includes remote preamps and an NCC-1 phasing unit. I'm planning on sending PTT to the NCC-1 which will in turn kill power to the preamps. As I understand the manual upon key down the PTT line goes active immediately followed by a default 8ms delay before R

Re: [Elecraft] PTT question

Jim - Make sure your preamp(s) do not have internal electrolytic power filtering caps. If they do, there is a fair chance the caps may hold the preamp on long enough for it to suffer damage. But, I am wondering why you are using preamps at HF at all? Unless the feedlines are extraordinari

Re: [Elecraft] PTT question

These are short verticals. HI-Z AL24. I'll ask about turnoff delay when I call DXE tomorrow. 73 Jim ab3cv On Jan 24, 2015, at 5:43 PM, Jim Wiley wrote: Jim - Make sure your preamp(s) do not have internal electrolytic power filtering caps. If they do, there is a fair chance the caps may

Re: [Elecraft] PTT question

Should have clarified: the preamps just match the short high impedence verticals to 75 ohms. Voltage gain is unity but obviously power gain. Jim ab3cv On Jan 24, 2015, at 5:43 PM, Jim Wiley wrote: Jim - Make sure your preamp(s) do not have internal electrolytic power filtering caps. If t

[Elecraft] PTT question re K3

Hi, I have a K3, and I swear I used to just tap the foot switch, which closes the PTT line, and the CW ID's memory which was in repeat would stop repeating... Now it seems to not do that anymore... PTT still works fine, in voice modes... Is there a way to set the K3 up for this type of behavior,