[Elecraft] Acom Amps

[David Honey]

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