Mic for K3

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Mic for K3

Phil Hystad
In preparation for getting my K3 I think I might have to buy a new mic.  I have the Icom desk mic for my Pro III and I also have the Heil Pro-Set Quiet Phone/Mic headset with the adapter for the Pro III.

So, do I need to buy a new mic or can I use these if I fashion together some kind of adapter so that the 8-pin plug connectors match up.  If the Pro-set works with just a different adapter from Heil maybe I can go that route.  If I were to purchase a new mic I presume that a Heil would be the way to go but any suggestions would be appreciated.

Thus, three questions:

1.  Is my Icom SM-20 desk mic usable albeit with a different Kenwood style adapter plug.

2.  Is my Heil Pro-set usable with a Kenwood style adapter.

3.  What is the best recommended mic for the K3.

phil, K7PEH

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Re: Mic for K3

Jim Brown-10
On Mon, 23 Nov 2009 12:43:26 -0800, Phil Hystad wrote:

> What is the best recommended mic for the K3

Thanks to the exceptionally versatile EQ, connectorization, and
range of settings, almost any good mic will work well with a K3 if
you wire it properly and make good use of those settings. My current
favorite is the Yamaha CM500 headset mic, reviewed in an email only
a few hours ago.

73,

Jim K9YC



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Re: Mic for K3

Iain MacDonnell - N6ML-2
In reply to this post by Phil Hystad
On Mon, Nov 23, 2009 at 12:43 PM, Phil Hystad <[hidden email]> wrote:
> In preparation for getting my K3 I think I might have to buy a new mic.  I have the Icom desk mic for my Pro III and I also have the Heil Pro-Set Quiet Phone/Mic headset with the adapter for the Pro III.
>
> So, do I need to buy a new mic or can I use these if I fashion together some kind of adapter so that the 8-pin plug connectors match up.  If the Pro-set works with just a different adapter from Heil maybe I can go that route.  If I were to purchase a new mic I presume that a Heil would be the way to go but any suggestions would be appreciated.
>
> Thus, three questions:
>
> 1.  Is my Icom SM-20 desk mic usable albeit with a different Kenwood style adapter plug.
>
> 2.  Is my Heil Pro-set usable with a Kenwood style adapter.

Yes, the Kenwood adapter works. Alternatively, you can just plug
directly into the 1/8" jacks on the back of the K3, although
admittedly the cord on the PSQP is a bit short for that.

It wouldn't take a whole lot of effort to modify the Icom adapter -
just have to rearrange the wiring inside the 8-pin plug a bit.


> 3.  What is the best recommended mic for the K3.

That's "somewhat subjective" :)

    ~Iain / N6ML
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Re: Mic for K3

David Gilbert
In reply to this post by Jim Brown-10

I agree.  I've been using $10 computer headsets with electret microphone
elements (they are lightweight, have foam ear pads, and long mic booms)
with my K3.  I use conservative settings of MIC =20  and CMP =20, with
MIC SEL =  rP.L bIAS.  The computer headsets have 3.5mm plugs that fit
the rear panel connectors of the K3 ... no need for any special adapters.

My TX EQ settings are:

.05     -6 db
.10     -1 db
.20      0 db
.40      0 db
.80      0 db
1.6      0 db
2.4     -3 db
3.2     -9 db

I'm sure other users might prefer different settings, but these meet my
needs.

By the way, I settled on these settings after extensive trials (both
using the K3 MONITOR function and on the air) with my MH-2 microphone
when I first got my K3, and later found that my audio sounded exactly
the same with the inexpensive computer headsets and those same settings
(not surprising since both have electret elements).

I mostly DX and contest, but I constantly get favorable comments about
the nice audio (even during DX contests).  One of the guys I worked
during Sweepstakes this last weekend told me he had worked in
professional audio for over 25 years and that my audio was "as good as
it gets" for ham radio.  Another guy told me I had such nice audio I
must be using an Elecraft ... I suspect he is a member of this list and
recognized my callsign ;)

I actually worked K9YC during the contest ... I should have thought to
ask him how my audio sounded.

I'm not suggesting that everyone should use cheap headsets since some of
them might not last long and many users prefer over-the-ear headphone
cups, but most computer headsets can be made to sound fine in transmit.  
I've tried a few different ones made by Inland and they've all sounded
good and held up fine.

73,
Dave   AB7E



Jim Brown wrote:

> On Mon, 23 Nov 2009 12:43:26 -0800, Phil Hystad wrote:
>
>  
>> What is the best recommended mic for the K3
>>    
>
> Thanks to the exceptionally versatile EQ, connectorization, and
> range of settings, almost any good mic will work well with a K3 if
> you wire it properly and make good use of those settings. My current
> favorite is the Yamaha CM500 headset mic, reviewed in an email only
> a few hours ago.
>
> 73,
>
> Jim K9YC
>
>
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>
>  
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Re: Mic for K3

Jim Brown-10
On Mon, 23 Nov 2009 14:53:39 -0700, David Gilbert wrote:

> I've been using $10 computer headsets with electret microphone
>elements (they are lightweight, have foam ear pads, and long mic booms)
>with my K3.  I use conservative settings of MIC =20  and CMP =20, with
>MIC SEL =  rP.L bIAS.  The computer headsets have 3.5mm plugs that fit
>the rear panel connectors of the K3 ... no need for any special adapters.

Yes. About five years ago, while still in Chicago, I bought a half dozen
different inexpensive Plantronics headsets and made connector adapters to
use with my radios. I used them with my K2, TS850, and 746, and they all
worked very well to the extent that they produced excellent, competitive
ham audio. BUT -- their form factor wasn't great, so I never fell in love
with them, and none found a home in my shack. There are a few paragraphs in
an appendix to the RFI tutorial about how to power them from a computer or
ham rig.

>I actually worked K9YC during the contest ... I should have thought to
>ask him how my audio sounded.

As I recall, you sounded good, but I was pretty toasty by then -- it was
the last few hours, and I think I called you Greg. :)  Oh well -- at least
I recognized your call. I should -- we've worked at least a half dozen
times in contests.

73,

Jim K9YC



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