From: "Gregg R. Lengling" <[EMAIL PROTECTED]>
To: "Jim Harris" <[EMAIL PROTECTED]>
Sent: Monday, January 03, 2005 9:09 PM
Subject: Re: [Elecraft] Questions from a Possible Builder/Owner
See my answers interleaved after the questions.
Gregg R. Lengling, W9DHI, Un-Retired
K2/100 SN 3075
http://www.milwaukeehdtv.org
----- Original Message -----
From: "Jim Harris" <[EMAIL PROTECTED]>
To: <elecraft@mailman.qth.net>
Sent: Monday, January 03, 2005 9:05 PM
Subject: [Elecraft] Questions from a Possible Builder/Owner
I've only been licensed about three years but have
been building electronic kits and related hardware
since 1954. My intent is to build a K2/100 with most
of the bells and whistles but have been unable to find
specific answers to three questions.
1. How does the K2/100 key an RF amplifier (AL-811)?
I have a Heil footswitch with a second cable for
amplifier keying. But, would prefer to use keying
from the rig itself.
Just use the keying output from the KPA100, I'm sure you remember putting
in the FET and RCA Jack for it.
2. How is ALC sent from my RF amplifier back to the
K2/100? I've reviewed the K2/100 manuals and cannot
find how it is done. Maybe it really isn't needed.
There is no ALC and most operators don't have a problem with it.
3. How do I adapt my Heil Headset Pro and Goldline
microphones. They currently are used with an
IC-746pro by using a Heil adapter cable. They now go
thru a homebrew switchbox with the adapter cable
between the rig and switchbox.
Why not make a cable to go from your switchbox to the K2 for the basic K2
jack wiring (all the jumper posts directly across), if you need bias
voltage for the mics you probably already created it in your switch box,
if you didn't you can create it from the K2 as per the instructions
included with any of the Heil mics from Elecraft.
I cannot see any other major problems. I've wound
baluns and view winding toroids a bit tedious but
there is nothing like "rolling your own." My
background includes professional soldering training
and experience. I have a scope, DVM and other minor
pieces of test equipment. Am I over looking any major
areas that need to be covered before starting?
You're pretty much ready to go, I also used a Service Monitor to do
receiver and transmitter alignment and freq. setting but it's really not
required.
Thank you for your response.
Jim, AB0UK
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