For the last few years I used an Ameritron AL-80B, 4 years old and one
with the open frame relay. Measured time from command to relay closure
and settling was in the order of 15 ms. For this I set my K3S for 20 ms
without concern and no evidence of hot switching. The new AL amps are
reported to be faster with different relays.
But best of all {AL-80B was sold} and a new KPA500 added to the desk.
SWEET! Nothing to go "clack"........and won't look back.
73
Bob, K4TAX
On 6/8/2018 9:48 AM, Wayne Burdick wrote:
Also, a reminder: this is nothing new. We’re just clarifying a delay offset
that has existed for a long time. There have been no recent firmware changes.
It would be possible to modify the K3’s keying algorithm to allow for much
longer delays (say, 0 to 200 ms). Of course this would significantly shift CW
RF output in time relative to keying input.
Fortunately, very few amplifiers require more that a few ms of extra delay.
73,
Wayne
N6KR
----
http://www.elecraft.com
On Jun 8, 2018, at 7:33 AM, Wayne Burdick <[email protected]> wrote:
The delay can be set from 8-20 ms at present. Given the small time offset, this
is actually 5-17 ms (approx). Use small values if possible.
With external keying, you can generally compensate by reducing the device’s
weighting.
Wayne
----
http://www.elecraft.com
On Jun 8, 2018, at 5:02 AM, "[email protected]" <[email protected]> wrote:
I agree that 5ms is too fast for many amplifiers. Is computer sent CW also
spoiled when increasing the delay? Does it only effect QSK or all
transmissions?
John KK9A
Igor Sokolov ua9cdc wrote:
Wayne it is a pity that TX delay setting affects CW timing. Changing TX
delay from default even one or two steps makes CW much worth. Can you
figure out a way to make CW timing independent from TX delay? With 5 ms
TX delay working in many contests I already had to change a pair of
relays in the amplifier. 10-12 ms would be fine for me. 20 ms will
probably suit the majority of users. But 5 ms is way too fast and
unfortunately cannot be altered without spoiling CW sending. I know that
I could build external sequencer but this does not look neat enough
especially for portable field operation. Every other radio I had allowed
TX delay adjustment to at least 20 ms.
73, Igor UA9CDC
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