[Elecraft] K3 audio output v headphone sensitiviy

[Brian Alsop]

These are exactly the condx the BM-10 are useless for here. 
.
73 de Brian/K3KO
K7TV wrote:

>What is adequate headphone sensitivity may be highly dependent on operating
>mode and rig selectivity.
>Case in point: Many years ago I ordered an FT-1000 and a Heil headset
>(forget which model). Headset volume was fine for voice, and for CW using a
>wide filter. But the FT-1000, like the K3, can be set to very narrow CW
>filtering. This brings down the noise to far below what you have at more
>"normal" bandwidth. On a quiet band one can then work CW stations that are
>extremely weak. In my case, that is where the Heil headset became unuseable,
>because of inadequate volume. In my opinion, when trying to copy the weakest
>possible CW signal for a given bandwidth, the gain needs to be high enough
>that the noise level is quite loud. I sent the Heil headset back to the
>store. This episode begs the question: The K3 being famous for its "quiet"
>receiver, does it have enough rx audio gain to provide a loud background
>noise level in CW mode using the 50 Hz bandwidth, for an average speaker or
>for a reasonable headset (not Heil!)?
>
>
>Bill W4ZV wrote:
>  
>
>>
>>David Yarnes wrote:
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>>
>>>I'll add my displeasure as well with regard to Heil 
>>>headphones.  I have 3 Heil headsets--the BM-10, the Heil 
>>>Pro-Set Plus, and the Elecraft Pro-Set (made by Heil).  In 
>>>all cases the headphones suck!  At least as far as output 
>>>goes.  
>>>
>>>      
>>>
>>I wonder if some of you may be going deaf?  I have a Heil BM-10 that I've
>>had for ~30 year and two Heil Pro-Sets that I've had for ~20 years.  I
>>just checked using my XG1 at 50 uV, AGC-Fast and RF Gain Max.  I have
>>plenty of audio on both Pro-Sets with AF gain at ~10 o'clock.  The BM-10
>>is slightly better at 9:30 o'clock.  For comparison, my current favorite
>>Extreme Isolation EX-29 is at ~9 o'clock.  
>>
>>I have no complaints about the Heils but now prefer the EX-29, mainly
>>because its external noise isolation is far superior (and also much better
>>than any active noise reduction headphones).
>>
>>73,  Bill
>>
>>
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