[Elecraft] [K2] What microphone to choose & wire - I'd like to hear your experiences - good and bad?

[Gary Hvizdak]

At 0734 EDT on Thursday September 9th Brian Lodahl OZ2BRN wrote ...

I am trying to think ahead of the build plan with K2/100 #6936 with KSB2
option (etc...):


Hi Brian,

    I suggest you consider getting the Rework Eliminator(TM) K2 Internal Mic
Adaptor (IMA), which is known to support the Heil Traveler headset.  The
advantages of the IMA are that:

1) Changing the pin-out and/or the bias resistance can be accomplished in a
few seconds, simply by reconfiguring a few jumpers.

2) Only the left side panel of the K2 need be removed to access the IMA's
3x7 jumper block.  In contrast, you would otherwise need to remove the K2's
Control Panel PCB or the entire front panel sub-assembly in order to access
the Mic Configuration header on the back of the K2's Front Panel PCB.

3) Well over 50 microphones are supported, including all Icom, Kenwood, and
Yaesu models that are manufactured with an 8-pin Foster connector.

4) The IMA provides seven jumper selectable bias resistance choices: 820,
2.2k, 3.6k, 4.4k, 5.6k, 9.2k, and 10k Ohms.

    To learn more, please visit http://www.unpcbs.com/

TNX & 73,
Gary  KI4GGX, http://www.unpcbs.com/ webmaster (and IMA designer)
K2 #4067