[Elecraft] microHAM K3 cables ...

[AB7R]

Joe,

There are no issues with bias on either mic connection.  The operator can
select bias to be on or off for both the FP and RP mics.

73
Greg
AB7R


-----Original Message-----
From: elecraft-bounces at mailman.qth.net
[mailto:elecraft-bounces at mailman.qth.net]On Behalf Of Joe Subich, W4TV
Sent: Wednesday, December 05, 2007 7:39 PM
To: 'Rick Tavan N6XI'
Cc: 'Elecraft Reflector'
Subject: RE: [Elecraft] microHAM K3 cables ...



Rick,

> But Joe - the K3 has rear panel connectors that are far
> better for cabling to external boxes. Forget about the
> Kenwood standard 8-pin front panel mic connector! Make up
> your cables with standard phone and phono plugs and keep the
> clutter behind the rigs where it belongs.

I don't see microHAM doing two versions of the K3 cable but it
is up to the guys in Slovakia.

According to the documentation in the K3 FAQ, there are some
issues in not supporting the front panel mic connector.  First
is the inability to pass electret bias (Kenwood standard is bias
on pin 6 and an RC network in the microphone as shown in the FAQ).
The second is the lack of the up/down/function keys via the rear
panel (when they are supported).

Anyone who wants a "clean" front panel and does not need the
added mic functions can always get a female cable mount Foster
(CE8 at www.buxcomm.com) and make a short Foster to 1/8" and RCA
pigtail to connect mic and PTT to the rear panel connectors or
remove the Foster from the microHAM cable, clip the extra wires,
put heat shrink on the two pairs (1 & 7 for mic, 2 & 8 for PTT)
and install their own 1/8" and RCA connectors.  This means that
the standard "Kenwood wired" MH2 and Proset K2 (assuming they
use the Heil iC cartridge) will not work with the rear panel
connections since the microphone or AD-1 adapter should
include the RC network.

73,

   ... Joe Subich, W4TV
       microHAM America
       http://www.microHAM-USA.com
       http://groups.yahoo.com/group/microHAM
       support at microham.com





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