[Elecraft] K2 is break-in only on CW?? Part II

[Jerry Summerall]

Hi Jay

It's been a while since we have had a VHF contact. Maybe 6M will open for us
soon.

I found that the delay on the K2 is not long enough to hold the sequencers
in CW mode. SSB works just fine even running WSJT and ect.

What I did was wire the sequencers with a foot switch to activate. If you
hit the key (I am running 1watt into a attenuator) you are not going to hurt
anything. I also have separate TR lines. As an added measure of insurance I
am running a small 12v relay on the key lines that is powered by the
sequencer power switch and deactivated by the last sequenced relay. As far
as disabling the Mic I am not sure what you are after. I have the amp key
line out of the K2 also connected to the sequencers and never had a problem.

I am saving for the band decoder so that it will power one of the 4
sequencers and related equipment when I switch bands.

Hope this helps a bit

Jerry K7YVZ

----- Original Message ----- 
From: "Jay Kesterson" <k0gu at verinet.com>
To: <elecraft at mailman.qth.net>
Sent: Saturday, June 05, 2004 11:01 AM
Subject: Re: [Elecraft] K2 is break-in only on CW?? Part II


>   Thanks for all for the replies to my question. My concern is using the
> K2 with V/UHF transverters, amps and preamps (some mast mounted). These
> are usually controlled with a sequencer that hard keys the radio last.
> In certain setups accidentally bumping the paddle and having the rig
> xmit could damage equipment down stream. I can use the PTT line from the
> sequencer, that would normally be used for hard keying the rig, to key a
> relay that doesn't allow CW to get to the K2 till all the up stream
> equipment is ready. However I use a foot switch and headset, that gets
> switched to three different rigs, on SSB. The footswitch is used to turn
> on the sequencers during both SSB and CW operation.. On weak signal VHF
> we often switch between SSB and CW. If I use PTT, from the sequencer, on
> SSB I haven't figured out a way to easily (automatically) disable the
> SSB PTT line on the K2 when I switch to CW. Any ideas, beside unplugging
> the mic connector or otherwise manually disabling the mic PTT line?? Is
> there some signal point inside the K2 that is active or grounded only
> during CW that could be used to possible drive a relay to disconnect the
> SSB PPT line while in CW??  Or better ideas??
>
> Thanks,
>
> -- 
> 73,  Jay  K0GU  DN70mq
>
>
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