Ron - if the QSK loop is open, the rig does not transmit. That's what
the loop is used for - to inhibit the radio from transmitting to either
allow proper sequencing of a QSK linear amplifier using a loop or to
accept a closure from another external source to TX EN to enable
transmit on the transceiver. If you break the QSK loop (by pulling out
a cable or otherwise) while the loop is enabled in the menus, the radio
stops transmitting, yes. This described in section (67) TX OUT / TX EN
in the Orion II manual. Using the same jacks as a transmit inhibitor is
also described therein.
Scott Robbins W4PA
Ron Castro wrote:
> I am using the loop, which worked perfectly until the new firmware update.
> Pulling either of the QSK control cables disables the O2 from transmit
> unless you shut down the keying loop in the menu. The workaround is to use
> PTT, which I did for the first few days I had the O2 and works fine,
> although I worry that I may not be protecting my vacuum relay as much as I
> did with the TT QSK.
>
> Ron N6AHA
>
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