It might work, Fred. Check this page:
http://www.acousticom.com/2015/aviation-headset-information-specs/
I always thought that aviation headsets met some earlier mic standard
(carbon?), but this page says that's not right. Note that the actual
headset speakers/transducrers have a rather high impedance, though I
suspect they may work with a K3S anyway.
Someone else can chime on a load of 300 ohms using the K3S's headphone
driver circuit. My DCs are way too buried to find and check this right now.
73,
matt W6NIA
On 6/11/2017 1:29 PM, Fred Jensen wrote:
Just curious ... I inherited a David Clark noise cancelling aviation
headset/mic from a neighbor who was a US Forest Service pilot. I've
never tried it, the connector is strange. I'm not even sure I know
where it is right now. Will it work with my K3 if I can find it and
get the connector compatible? I know they're expensive.
Maybe it will cancel the powerline noise on 80? [:-))
73,
Fred ["Skip"] K6DGW
Sparks NV DM09dn
Washoe County
On 6/11/17 12:55 PM, Joe Subich, W4TV wrote:
On 6/11/2017 2:45 PM, kevino z wrote:
Although headsets like my Heil Pro 7 may be more money, am I really
"wasting" money on buying a "fancy brand name" considering the
unit consists of mic and incredible speakers?
Yes, at about $250 retail (plus adapter cable), the Pro 7 is more than
five times as expensive as the Yamaha CM-500 (electret mic), Koss SB40
(dynamic mic) or SB45 (electret mic) headsets. Both the Yamaha and
Koss headsets have outstanding 120 Ohm headset drivers with sensitivity
rated at 96dB/mW and microphones well tailored for voice work. Heil
does not even publish the impedance or sensitivity for their headset
drivers!
For the price of a Heil Pro 7 one could get a Broadcast headset like
the Audio Technica BPHS1 ($199), Sennheiser HMD280 ($249) or Shure
BRH440M ($249) - all of which are significantly higher quality than
the Pro7 (and field proven).
73,
... Joe, W4TV
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Matt Zilmer, W6NIA
[Shiraz]
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