[Elecraft] K3: Keying SB-200 addendum

[hank k8dd]

Brian ....

Better yet - If you can find a MFJ / Ameritron ARB-702 before you leave ....
http://www.ameritron.com/Product.php?productid=ARB-702
We've used them with SB200 and FL2100 amps on a couple trips to FP and
they are great and pretty much bullet proof.

73 es GL
Hank    K8DD




----- Original Message ----- 
From: "Brian Moran" <brianmo at yahoo.com>
To: "Don Ehrlich" <ehrlich at clallambroadband.com>
Cc: <elecraft at mailman.qth.net>; "Ralph Parker" <ve7xf at dccnet.com>
Sent: Saturday, November 22, 2008 2:21 PM
Subject: Re: [Elecraft] K3: Keying SB-200 addendum


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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