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Old 10-07-2018, 09:10 PM
GalinHdz's Avatar
GalinHdz GalinHdz is offline
Join Date: Mar 2010
Location: KSGJ / TJBQ
Posts: 1,502

Be careful. Civilian helicopters, just like civilian aircraft, use 600 Ohms while military helicopters use 150 Ohms. Make sure it is a DUAL IMPEDANCE headset. Just because the headset says "Helicopter" does not mean it can be used in a military helicopter.

FCC Radiotelephone (PG) with Radar Endorsement

Last edited by GalinHdz : 10-08-2018 at 10:35 PM.
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Old 10-08-2018, 07:07 AM
mdevans9 mdevans9 is offline
Join Date: Jan 2006
Location: Hockessin,Delaware
Posts: 160
Default David Clark H10-40 & -46 Info Page

Admittedly, I don't know much about the different impedance's, which is why I emailed David Clark Company for information.

Here is a link to the page they sent me:

About half way down the page is a reference to Impedance of 150 ohms, followed by a warning that connecting to 600 ohm equipment could damage that equipment.

Best regards,

Merrill D. Evans
RV-7 Flyng!
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Old 10-08-2018, 10:29 AM
cw4bray cw4bray is offline
Join Date: Aug 2018
Location: ABERDEEN
Posts: 1
Default Your unit has headsets available

I'd hold off for a while before I spent money on a headset. Even if the acft. has enough jacks for you to plug into, the PC or PIC may not want you plugged in, or allow you to. It's far too easy, to accidentally xmit. on god knows which radio with switcholigy issues. If the crew chief is worth his salt, he won't want you plugging in and damaging ICS boxes / radios on "his" acft. with questionable impedance microphones. If you're a crew member, you'll be issued a helmet.
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Old 10-17-2018, 07:57 PM
nbachert nbachert is offline
Join Date: May 2012
Location: McGregor, TX
Posts: 230
Default Got one

Thanks everyone for responding I found one.
Nick Bachert
A&P almost
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