Fw: [Elecraft] Interfacing K3 to TenTec QSK Amplifiers/AutomaticAntenna Tuner

[Tim Heasman]

Don,

That is the method in the Titan I handbook for use with transceivers without 
a keying loop like the later Ten Tecs.  This method worked ok with my old 
Corsair II.  With the cost of the tubes I was ultra careful.  Have not tried 
the Titan with the K3 as yet.

73

Tim
gm4lmh
----- Original Message ----- 
From: "Don Wilhelm" <w3fpr at embarqmail.com>
To: "Tim Heasman" <tim at sideswiper.plus.com>
Cc: <elecraft at mailman.qth.net>
Sent: Thursday, November 20, 2008 10:23 PM
Subject: Re: Fw: [Elecraft] Interfacing K3 to TenTec QSK 
Amplifiers/AutomaticAntenna Tuner


> Tim,
>
> That *may* be OK, but I would check the timing carefully before declaring 
> it good.  If the circuits in the amp have any delay, it can cause problems 
> with the keying element lengths.
>
> If there is no keying delay, then it will work well because the amp can 
> kill the keying to the K2/K3 if it detects any problem.
>
> Sorry for the note of pessimism, but I don't have the details of the 
> TenTec amplifiers available, and I mention this only as a cautionary 
> statement.
>
> The K2 and K3 do delay RF generation to allow the amplifier relays to 
> switch.  In the K3 that time is adjustable via the menu - it is fixed at 
> 12 to 15 ms in the K2.  All but the slower amplifier relays will switch in 
> 10 to 12 ms, so hot switching is not normally a problem.
>
> 73,
> Don W3FPR