[Elecraft] Fw: Re: My K3's hissy and noisy audio

[Eric Scace K3NA]

No.  It's 3 resistors in a T or pi attenuator circuit.  There are many 
attenuator calculators on the web (just Google) to help select the 
appropriate resistors for your headphone impedance and desired amount of 
attenuation.  One attenuator is needed for each ear.

on 2009-04-05 22:14 Billy Cox said the following:
> Eric, is this a simple resistor or ?
>
> BTW, TU for the NCJ articles on TX/RX.
>
> 73 de Billy, AA4NU
>
> -----Forwarded Message-----
>   
>> From: Eric Scace K3NA <eric at k3na.org>
>> Sent: Apr 5, 2009 9:21 PM
>> To: Maarten van Rossum <pd2r.maarten at gmail.com>
>> Cc: Elecraft Group <elecraft at mailman.qth.net>
>> Subject: Re: [Elecraft] My K3's hissy and noisy audio
>>
>> I have very sensitive in-ear monitors.  The K3 (and the Orion, and 
>> possibly other radios) has significant hiss.  I inserted an attenuator 
>> and knocked the hiss down below my ability to detect it.  There is 
>> plenty of audio range remaining.
>>
>> You may find 10 to 20 dB will help.
>>     
>