[Elecraft] Key Line - My Mistake
Jim Miller
JimMiller at STL-OnLine.Net
Sat Mar 29 18:57:24 EST 2008
> What I cannot find in the Elecraft documentation is the maximum
> current and voltage that it can switch.
Look in the K3 FAQs - if you were to print it out, it is on page 27 of 34 -
it is the last item prior to the heading "other".
http://www.elecraft.com/K3/K3FAQ.htm
(search for 6 amps)
"What is the voltage and current limit to control TX amp relays?
The keying device is rated at 200 volts, 6 amps."
73, de Jim KG0KP
----- Original Message -----
From: "Stephen W. Kercel" <kercel1 at suscom-maine.net>
To: <elecraft at mailman.qth.net>
Sent: Saturday, March 29, 2008 6:11 PM
Subject: [Elecraft] Key Line - My Mistake
>
> I did not look closely enough. I have a K2/100 and it does have a key
> line for external amplifiers.
> What I cannot find in the Elecraft documentation is the maximum
> current and voltage that it can switch.
> I am thinking of building the QSK switch shown on p. 76 of the
> February 2008 QST to run an old tube-type amplifier QSK. That device
> requires a key line that can switch +52VDC at 100 mA.
> My question is, can Q9 in the 100 Watt module handle those levels
> directly, or do I need to use an isolating device like the Ameritron
> ARB-704?
> 73,
> Steve Kercel
> AA4AK
> _______________________________________________
> Elecraft mailing list
> Post to: Elecraft at mailman.qth.net
> You must be a subscriber to post to the list.
> Subscriber Info (Addr. Change, sub, unsub etc.):
> http://mailman.qth.net/mailman/listinfo/elecraft
>
> Help: http://mailman.qth.net/subscribers.htm
> Elecraft web page: http://www.elecraft.com
>
More information about the Elecraft
mailing list