[Elecraft] [K3] Help with K3, TenTec TITAN amp, and QSK

[Steve Ellington]

 Typo correction (amp relay) not amp delay!

>2 things:
> I see that the K3 can delay RF generation before keying the amp relay but
> what about, upon key up, delaying amp relay until RF ceases?  How is this
> accomplished. Is it included?
> 2. The K3's keyer is excellent but it's a ratio adjustment, not weight as
> indicated. The dit length or heaviness is non adjustable. This is like 
> most
> JA rigs and is really strange. Why would anyone want long dahs like a bug? 
> A
> real weight control shortens both dits and dahs equally and makes overall
> keying sound more choppy or heavier. Although the K3's weight is about
> right, some of us would prefer lighter weight for  high speed and heavy
> weight for bad conditions. This goes way back to the early days of  Morse.
> Steve Ellington
> N4LQ at carolina.rr.com
> ----- Original Message ----- 
> From: "Vic K2VCO" <vic at rakefet.com>
> To: "David Windisch" <davidjw at CINCI.RR.COM>
> Cc: <elecraft at mailman.qth.net>
> Sent: Wednesday, April 15, 2009 12:37 PM
> Subject: Re: [Elecraft] [K3] Help with K3, TenTec TITAN amp, and QSK
>
>
>> David Windisch wrote:
>>> Hi, all concerned:
>>>
>>> Please make comments about the situation here before I siubar:
>>>
>>> My TITAN amplifier has a QSK keying loop, which I now use with an
>>> external keyer and
>>> FT-1000D.
>>>
>>> I've RTM ver. D2, searched the Nabble K3 reflector, and see nothing 
>>> about
>>> such a setup
>>> for use with the K3.
>>
>> You do not need the QSK loop with the K3, which has an adjustable delay 
>> of
>> 8 - 20 (I
>> think) ms. between the amp key signal and the generation of RF. You can
>> attach the K3's
>> key out to the Titan's key in, and connect the external keyer to the K2's
>> key in.
>>
>> I use a Logikey K3 and set the K parameter (I've been using K=3 or K=4) 
>> to
>> lengthen the
>> elements to compensate when using the K3 in QSK mode.
>>
>> The K3's internal keyer does have a weight control which varies the
>> dot:space ratio. This
>> is not the same as the Logikey's K parameter, because the K lengthens the
>> elements by a
>> constant amount regardless of speed (the Logikey also has a weight
>> adjustment if you wish).
>>
>> I understand a 'ratio' control as dot:dash ratio. This should, in my
>> opinion, always be
>> exactly 3:1 and I am surprised to hear that any modern keyer still has
>> such a control!
>> Maybe you mean dot:space ratio, which I have always called a 'weight
>> control'.
>>
>> In any event, the internal keyer is not bad and can be set for either
>> iambic mode A or B.
>> I like the Logikey a bit better because the timing seems less critical to
>> me.
>>
>> -- 
>> 73,
>> Vic, K2VCO
>> Fresno CA
>> http://www.qsl.net/k2vco
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