[Elecraft] Heil Proset Plus and K3

[ON4WIX]

Hi all

Back when I had just assembled my K3 (that was in January, has it been that 
long? Time sure flies when you're having fun, hi) I had my Proset Plus 
connected to the K3 using a standard Kenwood adapter (the one with a red 
marking). Only after a few minutes did I realize that I had forgotten to 
turn off the bias voltage. No harm was done however and everything is still 
working FB to this day.

Hope this helps

73
Glenn ON4WIX
----- Original Message ----- 
From: "Tom Childers, N5GE" <n5ge at n5ge.com>
To: "Bruce McLaughlin" <bmclaugh at bex.net>
Cc: <elecraft at mailman.qth.net>
Sent: Friday, May 16, 2008 1:55 AM
Subject: Re: [Elecraft] Heil Proset Plus and K3


On Thu, 15 May 2008 19:07:12 -0400, you wrote:

>This only a guess but I wonder if Heil pulled a trick with the short red
>adaptor destined for use on the K2/K3.  Maybe they did a wiring switch in
>the adaptor to make it compatible.  I remember, the "standard" mike wiring
>for the K2 is the Kenwood standard, although, other configurations could be
>chosen when the mike connector was wired during construction.  I remember
>wiring my K2/100 for the Kenwood standard and everything worked.  I used 
>the
>Elecraft supplied Heil hand mike which is an electret.
>
>Heil told me that their dynamic mikes would work fine with the K3 and
>Kenwood cable.  They also said that it made no difference whether the rig
>bias was on or off because they used a resistor to block the unneeded bias
>which would also protect the rig.  I intend to try my Gold line and PR 40
>mikes in the future with the K3 using a Kenwood cable but with no bias just
>to be sure!  However, electret mikes such as the Proset are another kettle
>of fish.  All I really know is the red adaptor which came with the Elecraft
>supplied Proset works fine with the K3.  Perhaps it would be worthwhile to
>give Heil a call for a better explanation.
>

The Red banded mike cords from Heil are for Kenwood rigs.  I've used the 
Pro-Set
Plus! and GoldLine both with KWD and Yaesu rigs.  The Yaesu cords are Yellow
banded.
[snip]
Tom, N5GE - SWOT 3537 - Grid EM12jq

"Those who would give up
Essential Liberty to
purchase a little Temporary
Safety deserve neither
Liberty nor Safety"

An excerpt from a letter
written in 1755 from the
Assembly to the Governor
of Pennsylvania.

Support the entire Constitution, not
just the parts you like.

http://www.n5ge.com
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