Helmets - Should you? and Which?
Join Date: Aug 2010
Location: INDONESIA
Age: 46
Posts: 4
Likes: 0
Received 0 Likes
on
0 Posts
Gallet LH050 with softseal combo
I just bought Gallet LH050 using oregon aero huskit combo and CEP.
And try to fly without CEP just using huskit combo, and sound still very loud, im going to try add more ear spacer so it can more compress, hope its works...
And try to fly without CEP just using huskit combo, and sound still very loud, im going to try add more ear spacer so it can more compress, hope its works...
Join Date: Aug 2010
Location: INDONESIA
Age: 46
Posts: 4
Likes: 0
Received 0 Likes
on
0 Posts
Add more spacer doesnt work
today i add more oval spacer to my combo hushkit, still doesnt work as i thought, sound still loud, and hurt my head around ear...
anyone know how to correct fitting the oregon combos on gallet LH050... or the original earcup using separate huskit and softseal will do better for sound protection..?
anyone know how to correct fitting the oregon combos on gallet LH050... or the original earcup using separate huskit and softseal will do better for sound protection..?
Join Date: Aug 2003
Location: cloud9
Posts: 370
Likes: 0
Received 0 Likes
on
0 Posts
Gentex HGU 84 and CEP
Looking at replacing my SPH5 with an HGU 84 and CEP has anyone used this model? I have a big mellon and find the Gentex helmets more comfortable than the alpha and Gallet Helmets.
Join Date: Apr 2006
Location: Sweden
Posts: 4
Likes: 0
Received 0 Likes
on
0 Posts
Helmets: Should you? and Which?
Hi,
I recently got a Gentex helmet that has a low impedance Electret mic o (did i get that right?). In my company our helis has different intercom systems for high and low impedance.
I guess i can do this two ways, either i get another mic, a dynamic one, or i can install a switch on the helmet that switches from low to high impedance.
Im looking primarily to get a switch, because this would cause the least hassle when changing aircraft.
Ive searched the forums for similar posts, but what im looking for is a wiring diagram to build this high-low switch.
Has anyone had the same problem, and found a good solution?
Much appreciated,
Dan
I recently got a Gentex helmet that has a low impedance Electret mic o (did i get that right?). In my company our helis has different intercom systems for high and low impedance.
I guess i can do this two ways, either i get another mic, a dynamic one, or i can install a switch on the helmet that switches from low to high impedance.
Im looking primarily to get a switch, because this would cause the least hassle when changing aircraft.
Ive searched the forums for similar posts, but what im looking for is a wiring diagram to build this high-low switch.
Has anyone had the same problem, and found a good solution?
Much appreciated,
Dan
Chief Bottle Washer
DD,
You may find this post to be of some help: the matter has been discussed many times, and it doesn't seem to be a matter of a simple switch.
At least, not that has been answered here!
You may find this post to be of some help: the matter has been discussed many times, and it doesn't seem to be a matter of a simple switch.
At least, not that has been answered here!
Join Date: Oct 2003
Location: Over here
Posts: 1,030
Likes: 0
Received 0 Likes
on
0 Posts
Some David Clark headset models have the hi-lo switch. They also have a printed circuit card inside, and it's not a matter of a simple switch, you also must have the circuitry. Perhaps DC will sell the circuit card separately, although I've never tried to buy one. DC does have excellent customer service, though, so it's worth a try. I'm also unsure which microphone the switching DC headset uses, but I suspect you'll need to use the same type. A dynamic mike is normally high-impedance, along with most civilian mikes. In the US, only the military normally uses low-impedance electronics, and every civilian aircraft I've been in uses high-impedance.
Dapperdan, you could also use an external impedance converter, which would be more simple than carving up your helmet or swapping mics all the time:
Impedance Converter Single Heli to Single Military - Free Shipping $150 or more!
Drawback is that it's battery powered.
Impedance Converter Single Heli to Single Military - Free Shipping $150 or more!
Drawback is that it's battery powered.
Join Date: Feb 2001
Location: West coast Australia :)
Posts: 238
Received 0 Likes
on
0 Posts
I quite like the look of the round case option in the link below, scroll down to the first pictures. I too have a Zulu with a low impedance mic and want the ability to jump into a high impedance heli when needed.
http://www.comm-innovations.com/cata...20Adapters.pdf
Si
http://www.comm-innovations.com/cata...20Adapters.pdf
Si
Join Date: Nov 2007
Location: Away out There
Posts: 54
Likes: 0
Received 0 Likes
on
0 Posts
how do you know which one is which
just wondering if there is a simple way to identify which one is which. is it as simple as just not working or a low volume or something like that. for example would it be possible that an R44 that has had other radios and nat boxs fitted somehow have wound up with a low impedence setup instead of a high.
we operate Robinsons and Bell 206's, are we lucky enough that they are common impedance. cheers
we operate Robinsons and Bell 206's, are we lucky enough that they are common impedance. cheers
Join Date: Dec 2007
Location: the land of redemption
Age: 53
Posts: 250
Likes: 0
Received 8 Likes
on
1 Post
Hi!
I actually use an HGU-84 with dual visor and CEP.
I use to fly a B412 both Offshore for many hours and Hems.
Is a great helmet even if a little bit complicated to trim it for head comfort.
Installed an Oregon Aero zetaliner and hear cushions; great headgear.
maeroda
I actually use an HGU-84 with dual visor and CEP.
I use to fly a B412 both Offshore for many hours and Hems.
Is a great helmet even if a little bit complicated to trim it for head comfort.
Installed an Oregon Aero zetaliner and hear cushions; great headgear.
maeroda
Join Date: Sep 2003
Location: Portland and Various
Age: 47
Posts: 80
Likes: 0
Received 0 Likes
on
0 Posts
I had a dual impedance switch installed by helicopter helmets.com when they refurbishment my helmet. I like it alot but it does require the right mic/speaker set up. It works just as advertised, lets me switch between our aircraft without changing any mics or having an external converter.
Join Date: Mar 2006
Location: Land of damp and drizzle
Posts: 608
Likes: 0
Received 0 Likes
on
0 Posts
I recently went through this, needing to convert my high impedance Zulu to a low impedance aircraft. After going through some people who only pretended to know what they were doing, I eventually ended up with a battery-powered converter box. This works well, in that I can use my headset, but screwed up the vox system in the aircraft, resulting in my mic being permanantly open; ok(ish) if you're flying on your own, but a bit tough on everyone else if you're not.
If you're particularly interested in the specific differences between the technologies, drop me a pm.
If you're particularly interested in the specific differences between the technologies, drop me a pm.
Join Date: Oct 2003
Location: Over here
Posts: 1,030
Likes: 0
Received 0 Likes
on
0 Posts
Why do companies buy aircraft with different impedance avionics systems? It's more expensive in the long run, since two sets of parts have to be kept in inventory, and it's a PITA for all involved. Why not just get the proper avionics in the first place? Here only the military uses low-impedance avionics, and that is purely a matter of inertia, since there are no technical reasons. I've never seen a civilian aircraft with low-impedance avionics, and I'm curious as to why they're in use elsewhere.
Join Date: Jan 2001
Location: Pacific
Posts: 155
Likes: 0
Received 0 Likes
on
0 Posts
I have a HGU84, dual visor,CEP kit, flex boom etc. etc. Haven't had it a year yet but very very impressed. I got the standard liner but some of the other slaves at work have also bought HGU84's in the last few months and went with the 'custom liner' - i think that is what it's called- bloody neat & not a lot of difference in price. I bought mine from Gibson Barnes - it was a surplus military helmet - they get orders from the military then if someone washes out the helmet gets returned. Saved me $100 bucks but wld probably just go for the brand new next time. Wasn't overly impressed with the finish of the bone dome, couple of holes on front profile which hadn't been filled in - maybe from the face shield mount or something to to with the original single visor mount. I used some extra 'fillers' from my SPH4B to pack out the ears some more and I have to say that this helmet combined with the CEP blocks out that much noise that I would say that a noisy stinky 8 hour day now feels more like 3 or 4 hours - the huge reduction in fatigue that I am feeling should be cause for further investigation.
Have heard people complaining about the avionics of Gallet but others swear by them. Given that they are made by the French is enough reason for me to steer clear. The Alpha? Well another colleague wears one & it is incredibly light - he has pulled all the attachments offa it and made his own sun 'motorbike' style peak - where my 84 weighs near 2kg his weighs about 800gms! I would gamble that any Gallet or Alpha wearer who tried a HGU84 would be convinced of the superior comfort & you don't have to annoyingly readjust the harness once you have the lid on yer scone as you do with Alpha. Took me a month to get used to the weight but neck mucsles have adjusted now.
Sizing. I wld go XL and use packing if needed. The XL HGU84 is very trim & sleek - what i mean is that it is not a huge clunker that will bang into everything - the XL is definately not cavernous. I have a very average size head, bloody ugly but a big brain.
Have heard people complaining about the avionics of Gallet but others swear by them. Given that they are made by the French is enough reason for me to steer clear. The Alpha? Well another colleague wears one & it is incredibly light - he has pulled all the attachments offa it and made his own sun 'motorbike' style peak - where my 84 weighs near 2kg his weighs about 800gms! I would gamble that any Gallet or Alpha wearer who tried a HGU84 would be convinced of the superior comfort & you don't have to annoyingly readjust the harness once you have the lid on yer scone as you do with Alpha. Took me a month to get used to the weight but neck mucsles have adjusted now.
Sizing. I wld go XL and use packing if needed. The XL HGU84 is very trim & sleek - what i mean is that it is not a huge clunker that will bang into everything - the XL is definately not cavernous. I have a very average size head, bloody ugly but a big brain.
Gatvol
Join Date: Jun 2000
Location: KLAS/TIST/FAJS/KFAI
Posts: 4,195
Likes: 0
Received 0 Likes
on
0 Posts
You can spend a ton, get a custom paint job with all kinds of Air Brush etc........Me. I have been wearing gentex for over 40 years and I have zero complaints.
I bought my last one from Ronn at www.helicopterhelmet.com
I bought my last one from Ronn at www.helicopterhelmet.com
I haven't worn an -84 in about fifteen years... can anyone comment on the profile of the -84 versus the SPH-4B/5 and/or HGU-56? I'm thinking in terms of overhead clearance (I'm 6'1").
I've been leaning toward the -56 in terms of a more advanced level of safety, but any dual-visor helmet that makes me fly around with my head tilted toward the center of the aircraft or makes me slouch in my seat will hurt me more in operation than protect me if I stuff up.
I've been leaning toward the -56 in terms of a more advanced level of safety, but any dual-visor helmet that makes me fly around with my head tilted toward the center of the aircraft or makes me slouch in my seat will hurt me more in operation than protect me if I stuff up.