[Elecraft] Fwd: D 104

Don Wilhelm w3fpr at embarqmail.com
Sat Jun 4 16:37:55 EDT 2011


  Grant,

Then why not just put a 1 megohm or so resistor in series with the mic 
element.  I believe the K3 mic input has adequate gain to compensate for 
it, and it will keep the crystal (or ceramic) mic element happy.
The KISS principle applies - a resistor is much more simple than an FET 
or a transformer.

73,
Don W3FPR

On 6/4/2011 4:12 PM, Grant Youngman wrote:
>
> Sent from my iPhone
>
> Begin forwarded message:
>
>> From: Grant Youngman<nq5t at tx.rr.com>
>> Date: June 4, 2011 3:12:03 PM CDT
>> To: "jim at audiosystemsgroup.com"<jim at audiosystemsgroup.com>
>> Subject: Re: [Elecraft] D 104
>>
>> 10-15k is not high enough for good performance from a D-104 element.  It will sound like a squeaker at best, ir worse.
>>
>> Like I said. 500K MINIMUM.  5M better.
>


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