[Elecraft] Vacuum Relays and 30 WPM QSK

[Bob Nielsen]

I forgot to send to the list.


On 3/2/17 12:01 AM, Bob Nielsen wrote:
> The DX Connection QSK-2500 switch has provision for adjusting the 
> various delays and can handle a wide range of transceivers and 
> amplifiers.  When correctly configured, it will not hot switch when 
> keyed, protecting the life of the relays.  It was reviewed in the 
> September 2016 issue of QST.
>
> 73, Bob N7XY
>
>
> On 2/28/17 10:29 PM, Jim Brown wrote:
>> Of course. beginning with the K2, all Elecraft rigs have a delay 
>> built in -- that is, TX begins 8 msec or more after the amp control 
>> line is keyed. On the K3 and later relays, the delay is adjustable. 8 
>> msec is enough for most amps with GOOD relays (vacuum relays), but 
>> not enough for slower relays. Every rig I've used since getting back 
>> on the air in 2003 had that delay built in. Those rigs included 
>> TS850, Omni V, and FT1000MP.
>>
>> 73, Jim K9YC
>>
>> On Tue,2/28/2017 8:35 PM, n0tt1 at juno.com wrote:
>>> The "secrete" to running QSK with an amplifier is proper sequencing
>>> of whatever keying is used...relays or PINs.
>>
>>
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>