microphones

[Robert 'RC' Conley]

The Elecraft MH2 is a condenser microphone
The Astatic is a crystal microphone
A dynamic microphone
are they interchangeable

--
On the 8th day. God created Amateur Radio and Baseball.

NAQCC #0420
SKCC #089
FP #567
Wiol ono
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[George Danner]

Robert,
Condenser & Dynamic microphones can both be used with a K3 or KX3.
The Astatic microphone may be a crystal of ceramic microphone element
(depending on when it was manufactured). There have been discussions on this
reflector that it may work without an interface; others say it needs an
interface.
I use an Astatic for my desk microphone for my K3; unfortunately the crystal
element was defective. I replaced the element with an electret from Radio
Shack. Works well with good reports.
73
George
AI4VZ

-----Original Message-----
From: Robert 'RC' Conley
Sent: Saturday, June 22, 2013 12:00 PM
To: [hidden email]
Subject: [Elecraft] microphones

The Elecraft MH2 is a condenser microphone
The Astatic is a crystal microphone
A dynamic microphone
are they interchangeable

--
On the 8th day. God created Amateur Radio and Baseball.

NAQCC #0420
SKCC #089
FP #567
Wiol ono
______________________________________________________________
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[Don Wilhelm-4]

RC,

No, they are not interchangable.
The impedance is the problem.  The unamplified D-104 (and other Astatic
crystal [or ceramic] element mics needs a high impedance to work into
and sound good.  The K2 and K3 have a low impedance input.
If you have the amplified D-104, then it will drive the K2 or K3 just fine.
For the unamplified version, some have stated success by putting a 47k
to 1 megohm resistor in series with the AF line.  I use an FET in the
base of my D-104 to change from high impedance to low (my D-104 needs
bias to power the FET).

One way to convert the microphone is to discard the original element and
replace it with an electret element (which needs bias just like the MH2
microphone).

73,
Don W3FPR

On 6/22/2013 12:00 PM, Robert 'RC' Conley wrote:
> The Elecraft MH2 is a condenser microphone
> The Astatic is a crystal microphone
> A dynamic microphone
> are they interchangeable
>

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[Stephen Selberg]

Robert,

Off topic but...

I love your quote at the end of your email, "On the 8th day. God created
Amateur Radio and Baseball."

Read it to the xyl and she rolled her eyes and said that you forgot to add
"beer" to your line....Hihi. Check out my QRZ page.

73,

Steve KS6PD

Kx3 #3604




On Saturday, June 22, 2013, GDanner wrote:

> Robert,
> Condenser & Dynamic microphones can both be used with a K3 or KX3.
> The Astatic microphone may be a crystal of ceramic microphone element
> (depending on when it was manufactured). There have been discussions on
> this
> reflector that it may work without an interface; others say it needs an
> interface.
> I use an Astatic for my desk microphone for my K3; unfortunately the
> crystal
> element was defective. I replaced the element with an electret from Radio
> Shack. Works well with good reports.
> 73
> George
> AI4VZ
>
> -----Original Message-----
> From: Robert 'RC' Conley
> Sent: Saturday, June 22, 2013 12:00 PM
> To: [hidden email] <javascript:;>
> Subject: [Elecraft] microphones
>
> The Elecraft MH2 is a condenser microphone
> The Astatic is a crystal microphone
> A dynamic microphone
> are they interchangeable
>
> --
> On the 8th day. God created Amateur Radio and Baseball.
>
> NAQCC #0420
> SKCC #089
> FP #567
> Wiol ono
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email] <javascript:;>
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email] <javascript:;>
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>

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