[Elecraft] Heil Proset w/ K2

Tue May 6 21:34:01 2003

Ron,
I've been using the Heil Proset with the HC-5 element for over two years
with the K2.
It works fine. I use the standard Kenwood 'red' mic connector. And have
set
the jumpers on the front panel board for the Kenwood wiring as shown in
the
KSB2 manual.  I did change the value of R14 on the SSB board to 10k
once. I reversed
that change after I installed John's (KI6WX) mods to the KSB2 module.
The name of the
article is 'Improving the Performance of the KSB2' (7/18/2002). It is
available
on both the Elecraft and LA3ZA sites.
I later went back and modified the front panel board to supply 5V on pin
6 of the
mic connector and added AF out from the center lug of the AF gain
control to pin
5 of the mic connector. This allows me to use cheap $3 headset/boom mics
that
were for computer use. Quality reports have been great! The AF out on
the mic connector allowed me to build up a cable to go directly to the
PSK31
interface with a level audio output and still be able to monitor the PSK
from
the internal speaker using the volume control.
I also have the Heil-supplied hand mic for the K2. I modified the wiring
of that mic
to add in the resistor and blocking cap to enable the mic to work with
the
K2. I added the parts in the connector shell. Choosing pins 5 and 6 for
5V and AF out
mean that all of the mics and PSK gear in the shack are interchangeable
and bad
things won't happen (or are less likely to :) when different mics and
interfaces
are plugged into the K2.
I don't claim ownership of any of the above ideas - they all came
from this reflector or Elecraft. Great source of info!
73, Mike

Mike, W1USN
Boxford, MA USA
[email protected]
WN1DAE, WN1TPE, WA1TPE, VE1/WA1TPE, DL/WA1TPE, G0/NW1J, EA7/NW1J,
P4/NW1J, P4/W1USN, V31RN, 8P9CI, VP2ERN, V26NR, FS/W1USN, PJ8/W1USN,
J75RN=20

-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Ron Chambers
Sent: Tuesday, May 06, 2003 11:36 AM
To: [email protected]
Subject: Re: [Elecraft] Heil Proset w/ K2

Curious to hear this answer as I intend to use my Heil Proset on the K2=20
also.

73
Ron N5QQ
ex K5PN, KE5IR, WB0RIE, WB5JIL, WA5BNQ, WN5BNQ

>From: "Carl J. Denbow" <[email protected]>
>To: <[email protected]>
>Subject: [Elecraft] Heil Proset w/ K@
>Date: Mon, 5 May 2003 23:25:25 -0400
>
>
>I just received an email from Bob Heil.  He informs me that Eric and
Wayne=20
>will be able to give me the exact resistor values to make the Proset=20
>headset mic work "perfectly" with the K2.  Since I think Eric and Wayne

>monitor this listserv, and others on the list may already know the
answer,=20
>I thought I'd pose the question before this very knowledgeable
audience.
>
>Tnxs & 73!
>
>Carl -- N8VZ
>
>P.S.  I'm about two-thirds through building my K2.  I got a lot done
during=20
>the Christmas break period (I work for a university), and I am just now

>finding time to get back into building mode.
>
>
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