[Elecraft] K3: Keying SB-200 addendum

[Brian Moran]

I am the parts delivery guy :-) there's a great one transistor one resistor circuit for doing this that I have used in the past. I'll bring some relays and back emf diodes too
Brian soon to be vp5/n9adg


Sent from my iPhone

On Nov 22, 2008, at 10:39 AM, "Don Ehrlich" <ehrlich at clallambroadband.com> wrote:

Ralph,

A reed relay is a fragile device and may not survive the transient current and voltage spikes present when switching the SB200 relay.  Be sure to have your friend bring a relay robust enough to handle the load presented by the relay coil in the SB200.

Don K7FJ



Tnx for your comments, guys.
I'm at VP5W, and no Radio Shack on the island :-(
I did bring a little relay interface, but the reed relay has given up the
ghost. Fortunately, we have one op coming from Seattle next week, and he
can bring a replacement.
It is a borrowed SB-200, otherwise I would have installed a soft-key mod.
Oh well....
Elecraft had better hurry with their KPA800!

VE7XF

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