[Elecraft] K3 TX DELAY

[Joe Subich, W4TV]

On 2015-05-31 1:00 PM, dave wrote:>
> One thing that hasn't been mentioned so far is that the WinKeyer has
> a separate PTT out that has a programmable delay before initiating
> the CW.

Unfortunately, that delay only works on CW - there is still no solution
for SSB VOX or data modes like RTTY where the rig starts to make RF as
soon as PTT is closed.

The solution is still to update the amplifier with fast relays like
the article by W8ZR.

73,

   ... Joe, W4TV


On 2015-05-31 1:00 PM, dave wrote:
>
> One thing that hasn't been mentioned so far is that the WinKeyer has a
> separate PTT out that has a programmable delay before initiating the CW.
> This will allow the needed delay without affect the sent CW in any way.
> Use one here, works well.
>
> Used the scope to measure the actual settling time of the open frame
> relays (about 30 mS is needed to full settle). Measured the K2/K3 delay
> then added enough with the WinKeyer to insure no hot switching.
>
> 73 de dave
> ab9ca/4
>
>
>
> On 5/31/15 7:21 AM, Joe Subich, W4TV wrote:
>>
>> Look at W8ZR's excellent article in the current issue of QST.
>>
>> 73,
>>
>>     ... Joe, W4TV
>>
>>
>> On 2015-05-31 2:50 AM, Vic Rosenthal wrote:
>>> Agreed. With a K3 you don't need any special sequencing -- just
>>> replace the relay with a reed relay for input and a vacuum relay for
>>> output (or two vacuum relays). It is much more pleasant even if you
>>> don't use QSK or VOX.
>>>
>>> Vic 4X6GP/K2VCO
>>>
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