[Elecraft] K3/0 - How to enable left side mic?

[jlbates4]

To All,
I sent a support request to Elecraft regarding my issue and they replied
with the following:


======== Start E-Mail Here ===========
Hi Jim,

>From what you indicated, your Bias is turned ON for the MH2. If you are
using headsets which require Bias, this is important.

You can either use VOX or connect a footswitch to the back of the Mini
(PTT) to place the Mini in transmit. The XMIT/tune button can not be used
for PTT.

The microphone should have a mono 3.5 mm plug. That would go into the MIC
jack on the side of the Mini.

Let me know if this helps.

73,

-- 
--------------------------
Craig Smith W6WL
Elecraft Customer Support
831-763-4211 x 174
--------------------------
======== End E-Mail Here ===========


I wired up a PTT using the K3/0-Mini "PTT" jack on the rear; plugged my
headset/mic into the left MIC/SPKR jacks and it WORKED...

Apparently, you MUST use the hardline PTT for the K3/0-Mini to accept MIC
input from the left side jacks.  Pressing the XMIT button and using CAT
control did NOT enable the headset mic to work...

The question remains - why would the design require a dedicated PTT for
headset use?  I thought plugging the headset into the left MIC jack
"disabled" the front panel MIC (8 pin) jack...

Anyway, I did want to share with the the group.

73 de K8OI

---
Jim Bates
mailto:jlbates4 at gmail.com
(804) 592-1068

On Sun, Feb 28, 2016 at 1:24 PM, JOE-2 [via Elecraft] <
ml-node+s365791n7614736h60 at n2.nabble.com> wrote:

> The manual for the K3/0 says:
> "It uses its internal speaker and front headphone jack for receive
> audio, and its front
> microphone connector for your mic input."
>
> In other words you need to use the front mike connector on the K3/0.
> The mike connector on the back of the K3/0 is actually an output to the
> RemoteRig box.  This is different than the back of your K3/10 K3/100
> radio, where it is an input.  You need the special E85051 (or homemade
> equivalent) cable that connects the K3/0 "SPKRS" and "PTT IN" to the
> RRC1258 "AUX/MIC" jack. BTW, the "PTT IN" on the K3/0 is actually a PTT
> output from the K3/0 to the RRC1258.
>
> You may be able to make a direct connection to the RRC1258 "AUX/MIC" for
> your headset.  I've never done this, but it may be possible.
>
> The HM2 mike is an Electret that needs bias on.  Both Heils are probably
> Dynamic and need bias off.  You'll have to check the Heil literature. I
> don't know how bias is controlled in the K3/0 so I don't know how bias
> on/off woks at the K3/0 but it's worth mentioning as a possible problem.
>
> If you are using the E850511 that came from Elecraft, there is a
> possibility of a "digital noise" problem.  The pairs used for mike audio
> are split between two pairs, causing an imbalance.  This may or may not
> show up in your K3/0.
>
> There is also a small noise problem in the E980207 speaker cable that
> goes between the K3/0 and the RRC1258.  I fixed that with isolation
> transformers.
>
> 73, Joe, K1ike
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
> <http:///user/SendEmail.jtp?type=node&node=7614736&i=0>
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]
> <http:///user/SendEmail.jtp?type=node&node=7614736&i=1>
>
>
> ------------------------------
> If you reply to this email, your message will be added to the discussion
> below:
>
> http://elecraft.365791.n2.nabble.com/K3-0-How-to-enable-left-side-mic-tp7614691p7614736.html
> To unsubscribe from K3/0 - How to enable left side mic?, click here
> <http://elecraft.365791.n2.nabble.com/template/NamlServlet.jtp?macro=unsubscribe_by_code&node=7614691&code=amxiYXRlczRAZ21haWwuY29tfDc2MTQ2OTF8MTMwMTAwMTY1Ng==>
> .
> NAML
> <http://elecraft.365791.n2.nabble.com/template/NamlServlet.jtp?macro=macro_viewer&id=instant_html%21nabble%3Aemail.naml&base=nabble.naml.namespaces.BasicNamespace-nabble.view.web.template.NabbleNamespace-nabble.view.web.template.NodeNamespace&breadcrumbs=notify_subscribers%21nabble%3Aemail.naml-instant_emails%21nabble%3Aemail.naml-send_instant_email%21nabble%3Aemail.naml>
>




-----
K8OI
mailto:jlbates4 at gmail.com
(804) 592-1068
--
View this message in context: http://elecraft.365791.n2.nabble.com/K3-0-How-to-enable-left-side-mic-tp7614691p7614982.html
Sent from the Elecraft mailing list archive at Nabble.com.