[Elecraft] Front end FET of transverter blown with CW configured K2

[Mark_van_Wijk]

OK, guess Murphy forced me to screw up twice this week :))
So another mistake I would like to share with you all.

Observation:
20dB lost in receiver performance at your transverter, no C1 adjustment
possible (Elecraft XV50 kit)

Cause:
Q3 PHEMT ATF34143 defective

How did I manage that:
K2 configured in CW , with no RX delay and Iambic keyer set in the menu.
The PTT line from your mic is also the 'dot' line for your internal keyer.
When pressing the mic's PTT in CW mode, the K2 starts sending dots in full
BK.
Your transverter will try to follow the quick TX/RX switching , but since
there is also little or no RX delay, the front end FET will go to heaven.
Normally you would not press the mic while in CW mode, but trying to locate
my other mistake (max ALC reading in SSB) I
Both my A and B version K2's do this.
Again human error here, but we're learning :))

'73 Mark, PA5MW