[Elecraft] Sequencing a chain of equipment with a K2 at the head.

[Ken Beals]

I recently measured # 3664, and mine is right at 20 ms, from external 
PTT out to RF present.  All I had to do to drive an old Henry 2K was put 
a speed up circuit on the Henry relay.  It is kind of noisy (soon to be 
replaced by vac relays), but it works just fine.  The speedup circuit 
reduced the Henry relay pull in from 25 ms to about 13.  It does take 
the Henry about 130 ms to shut off, so I keep the TR delay on the K2 
cranked up a bit.  Not wonderful QSK, but at least I don't have to worry 
about kicking the foot switch out of my reach.........

Ken

Guy Olinger, K2AV wrote:

>>Ameritron, for example has done something wrong (without quotes).
>>    
>>
>Many
>  
>
>>of their amplifiers use relays that take maybe 25 ms or more to go
>>    
>>
>from
>  
>
>>rx to tx.
>>    
>>
>
>I would say that they have done something inexpensive. That's what
>their amps are. There are many "short cuts" taken to put out a
>commercial product at that price level, and still maintain a business
>that takes in more money than goes out. You want a no corners cut
>anywhere amp, then go buy an Alpha 87A for $6,500 plus shipping.
>
>Now if amp builders wanted to go an Elecraft route and put out a KIT
>for Ameritron kinds of prices, where WE supply the labor, we would
>have a different deal.
>
>Kludge?
>
>One of the beauties of the K2 is that it has evolved into a very
>sophisticated device by a series of well-engineered "kludges". And
>CONTINUES to evolve. I'd rather call them upgrades.
>
>Someone else put me on to a write-up on the website that says that the
>delay from 8R change to hot RF is 15-20 milliseconds. The article was
>dated Feb 16, 2000. Is this still true with a current factory K2 four
>years later?
>
>73, Guy
>
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