At 15:56 11/05/2006, Vic K2VCO wrote:
David Honey wrote:
I regularly use my K2/100 with an Acom 1000 for SSB and CW.
The Acom 1000 uses a vacuum relay for switching. I found that using the
standard T/R delay of 5ms led to some complaints of key clicks. So I use
a longer setting for semi break in (25-40ms) and that works well and I've
not had any complaints since.
Are you talking about a setting on the Acom? Or the K2? Do you know if
the clicks were heard on make or break? I've keyed vaccuum relay t/r
systems directly with the K2/100 with no problems. The 15 ms. or so
'headroom' (time between the activation of the amp key output and the
appearance of RF) provided by the K2 has been adequate to allow the relay
to close without hot switching.
I meant the QSK setting on the K2 (aka the T/R menu item). The Acom 1000
has no such setting - it has no software control at all.
I don't think there is an easy well to tell how the clicks were being
generated. All I can tell you is that with T/R=0.05, I had several
comments/complaints I was causing QRM. Since changing T/R to 0.3 or 0.4,
not one single complaint or comment about such key clicks. Perhaps T/R can
be lower. I just didn't want to incur the wrath of others on the band. It
might also save on wear-and-tear on the relay.
73, David M0DHO
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