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  #1  
Old April 29th, 2016, 11:32 AM
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Aviation intercom

I am already using ear pro in the truck over long hauls due to the road/engine noise. Every time I have a passenger, including my kids, I wish I had an intercom system like we use in HMMWVs, MRAPs, tanks and other loud vehicles. I can't easily convert one of those 24v systems, but have found some affordable portable aviation intercoms.

Has anyone tried this? Any tips from aviators? There seem to be a ton of cheap Chinese monitors and then a handful of more expensive varieties. Anything to look for?
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  #2  
Old April 29th, 2016, 11:44 AM
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I had a Softcomm portable intercom back in the day and it worked fine. Your bigger issue is the headset. The cheap units won't block any noise. The mid price units (David Clark) block noise by squeezing the ear pieces against your head. Very uncomfortable after a short period of time. The pricy ones (Bose A20) are..... pricy, like $1000 each pricy.
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  #3  
Old April 29th, 2016, 12:18 PM
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Also the issue of legality with both ears being covered.
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  #4  
Old April 29th, 2016, 12:28 PM
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I'm not too concerned about the headset thing. I have a dual comm headset from back in the day that works.
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  #5  
Old April 29th, 2016, 03:03 PM
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I just wondered about this yesterday...came out of the grocery store to see the local Fire Dept guys parking up next to me...all wearing their headsets with microphones.
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  #6  
Old April 29th, 2016, 03:14 PM
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I've often had the same thoughts....my 90 is loud as heck.
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  #7  
Old April 29th, 2016, 03:16 PM
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Rugged Radios makes a nice kit. they have many options available to include digital speech processors and Bluetooth integration. their kits can support up to four headsets. Rugged Radios: Headsets, Intercoms, 2-Way Racing Radios and Communication for Motorcycles, Offroad, Circle Track, Aviation, Drag Racing, NASCAR, Police, and more...


I've been looking at their RRP686 kit. They also offer a military discount if you ask.
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  #8  
Old April 29th, 2016, 03:43 PM
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Quote:
Originally Posted by flippedrover View Post
Also the issue of legality with both ears being covered.
So many people drive with 2 headphones in, most defender/series dont get bothered by police much, even when slightly being rules.
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  #9  
Old April 29th, 2016, 03:54 PM
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Quote:
Originally Posted by UnfrozenCaveman View Post
I just wondered about this yesterday...came out of the grocery store to see the local Fire Dept guys parking up next to me...all wearing their headsets with microphones.
Those most likely have DSP's built in that attenuate the noise to a specified dB level but still allow you to hear what's going on around you, as well as the intercom and radio uplink.
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  #10  
Old April 29th, 2016, 05:33 PM
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Quote:
Originally Posted by Landy_Andy View Post
Those most likely have DSP's built in that attenuate the noise to a specified dB level but still allow you to hear what's going on around you, as well as the intercom and radio uplink.
not the ones I use to wear when I volunteered. They were the same headsets that I wore in a helicopter. I don't remember but I'm pretty sure EMS is exempt from the laws.
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  #11  
Old April 29th, 2016, 07:10 PM
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How about motorcycle head sets? Or do they all need helmets?
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  #12  
Old April 29th, 2016, 07:49 PM
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I've actually been working on this for a few months. If you need simple passenger-to-passenger comms, the Rugged Radios products are your best bet. If you need vehicle-to-vehicle comms, you'll want something better. I've found a schematic for an adapter to interface the aviation headsets with standard ham radio gear. The impedances and plugs are different so you will need an adapter.

This is the schematic:



The plug sockets are somewhat difficult to find but with a little google research, they can be found.

I've researched several headset options and here's what I've found:

David Clark headsets are slightly less expensive and really have the sweet military look that would befit my ex-MOD truck. But, they have a reputation of being uncomfortable brain-squeezers for extended wear and many pilots hate them for this reason.

A much nicer solution is the Bose A20 aviation headset. They have active noise reduction and also have a really amazing feature that lets you listen to music (iPod/iPhone/etc) through them or use them as a phone headset but when the radio breaks squelch, they will mute the music so you can hear the comm radio. They're also quite comfortable. The downside--for me, anyways--is that they look like they belong in a private jet cockpit and not a dirty ex-MOD truck. They're also mega bucks. For the kind of trips that I like to do, I need something really rugged that won't get destroyed by dust and dirt and bouncing around. Not sure if the A20s are up to the task.
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  #13  
Old April 29th, 2016, 07:57 PM
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That's great info Chris! I'll put that to work when I rework my system for inter-vehicle coms.

I've been using DC's in the truck for the last 5 yrs. No problems with Leo's despite the fact that it's technically illegal. I think they just assume you're some kind of official ;-)

You can grab the race scanners from radio shack for a quick intercom option. That's what I first did to see if I liked having the system in the first place. Then I rewired it and added extra speakers in the DC's so that the music wouldn't cut out with the vox. Cell is wired in too. Normal conversations at 60mph in an ST over the phone or with your passengers is awesome! Also, it would probably cost a few grand to hear music at that speed with nubbies and glass packs!
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  #14  
Old April 29th, 2016, 08:08 PM
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Check out demon tweaks in the uk, you want a rally head set, they make Reece head phones etc numerous brands But every rally car has them http://www.demon-tweeks.co.uk/motors...ercom-headsets

Kits
http://www.demon-tweeks.co.uk/search/Intercom
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  #15  
Old April 29th, 2016, 08:18 PM
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I wear my Bose A20's when ever I drive a Rover thats not modern.

In my old Shorland MKIII we have a 4 place 12v aviation intercom system what worked great. Get noise canceling headset otherwise its a wast of time
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  #16  
Old April 29th, 2016, 10:23 PM
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Get a David Clark with Oregon aero hush kit. I've flown with both bose and DC headsets. I never liked the way the bose fit, personally. As far as headsets in cars though I think they are goofy.
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  #17  
Old April 29th, 2016, 10:41 PM
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I spend 8hrs driving a 110 or series back from the port and I could care less if it was goofy,

Flying side I like my Bose over my DC's. Owned many DC's both noise cancelling and not over the years and will never go back. A lot less fatigued at the end of the day with the lighter Bose.
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  #18  
Old April 29th, 2016, 10:52 PM
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I wear a pair of Audio-Technica noise cancelling headphones on long trips with my iPod plugged into them & over-top of my blue-tooth Oticon hearing aids so I can answer my phone if I need to.

I've been seen by the cops often & I can tell you I can hear better with the noise cancelers on than without them. You see people all the time with their white iPhone/Pad/Pod cord going into both ears driving all the time. Who knows what volume they're using them at too.
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  #19  
Old April 29th, 2016, 11:16 PM
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I have a Sigtronics portable intercom I keep around for when I fly planes without one. https://www.sigtronics.com/air/spo.html and runs off 11-34DC volts ship power or a 9v battery. Like David Clark headphones, and the company, but a used set of Bose would be hard to beat. The lower weight of the Bose and the active noise canceling is so good they do not need to squeeze you head like the David Clarks. I have, however, found the David Clarks much much more durable. Would also try to get one with the coiled cord.
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  #20  
Old April 29th, 2016, 11:22 PM
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Public safety headsets normally have one ear open for the driver. The headset looks like a normal headset but the ear cup on one side has holes in it.

In Virginia, we are not excerpt from the laws.
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