[Elecraft] KEY OUT

[Alexandr Kobranov]

Suppose there is not problem with PTT or computer controll.
What is sometimes problem is what is happened after hitting the Key in 
pure PTT mode. This is acting as activating KEY OUT port. That´s it.

Maybe there is way how to interpret "Key closed" when K3 is not in VOX 
or in TX mode by external PTT (line or command) or XMIT/TUNE button by 
firmware.

IMHO when K3 in PTT mode it will be better "no action" if the Key is 
pressed when no PTT is present (external, by command or XMIT/TUNE 
button).  Simply nothing, no KEY OUT,...like KEY port disconnected.

Maybe I missed something, maybe I am completely wrong but on any of my 
other rig(-s) never had any problem with activating connected systems 
(transverters, relays) by hitting the Key when PTT not active.
"
I never seen any explanation why K3 is doing by mentined way, what is 
advantege and purpose, reading list and doc very often but still not 
clear to me (and maybe others as well:-))
Time to time this topic is "open" without this explanation and again 
goes for sleep :-)

73!
Lexa, ok1dst
K3/10 #727


Lance Collister napsal(a):
> Ken_ke2n wrote:
>> "Vic K2VCO (via Nabble)" <ml-user+39048-261597783 at n2.nabble.com> wrote:
>>
>>> I would be very careful about this, because of the need for the key 
>>> out to be activated a few ms. before RF appears and to stay active 
>>> until after the RF is gone. This is necessary to prevent 
>>> hot-switching of amplifier relays which at best will create key 
>>> clicks and at worst will destroy the relays.
>>> -- 
>>> 73,
>>> Vic, K2VCO
>>
>> Thanks - perhaps I should qualify that my key out goes to a sequencer 
>> that takes care of all the proper RF relay sequencing. Its just that I 
>> do not want it keyed up all those times when I am NOT transmitting AND 
>> I am using the transverter option running at 1 milliwatt output .....
>>
> I the VOX turned off and have my computer or foot switch key my 
> SEQUENCER, which in turn finally keys up the K3 via the microphone PTT.  
> In that way, the K3 can never be switched HOT (unless it is put into 
> XMIT mode automatically during firmware updates or something direct such 
> as that).  GL and VY 73, Lance
>