[Elecraft] Bose noise canceling headphones

[Ed K1EP]

At 3/19/2009 04:58 PM, Erik N Basilier wrote:
>Ken, thanks for including the battery information.
>I have been attracted to the idea of noise-cancelling headphones for years,
>but never had enough information about the power sources.
>My interest has never been urgent enough to write or telephone the
>manufacturers.
>Curiously, mose advertisements don't mention that aspect at all. When I had
>a job, I wanted a pair that could be powered through a wall wart.
>In the rare occasions that I am on an airplane I would want to use
>disposable batteries. The worst possible situation in my opinion would be to
>have to use rechargeables. For daily use they create extra work, and for
>occasional use they are never ready when needed.

I use and have used my Bose (QC-1 and QC-2) for years on rechargeable 
AAA batteries.  (The QC-3 comes with an internal rechargeable 
battery.)  Work great and most of the time can get an entire contest 
in on one battery/charge.  I keep some spares with me.  I can always 
buy a primary cell if I am caught somewhere without a charged 
battery, which hasn't happened yet in years of use.  Using AC mains 
is the worst.  It could introduce ground loops, hum, tether you to a 
power source, extra wire tangle, etc.


>73,
>Erik K7TV
>
>----- Original Message -----
>From: "Ken Alexander" <k.alexander at rogers.com>
>To: "Elecraft_List" <elecraft at mailman.qth.net>; "dw" <bw_dw at fastmail.fm>
>Sent: Thursday, March 19, 2009 1:08 PM
>Subject: Re: [Elecraft] Bose noise canceling headphones
>
>
> >
> > I have a pair of Sony noise-canceling headphones that I'm really pleased
> > with.  They were $89.95 at Best Buy.  Model MDR-NC6.  They run on a single
> > AAA battery.
> >
> > They work best on constant droning noises...perfect for eliminating
> > generator noise during Field Day!  They also work well on noise from
> > things like fans and air conditioners.
> >
> > These particular phones sit on your ears rather than surrounding them, so
> > there's always a little noise that leaks in.  I'm sure any model that
> > completely covers the ear would be more effective.  For the money I'm very
> > happy with mine...wouldn't be without them!
> >
> > 73,
> >
> > Ken Alexander, VE3HLS
> >
>
>
>______________________________________________________________
>Elecraft mailing list
>Home: http://mailman.qth.net/mailman/listinfo/elecraft
>Help: http://mailman.qth.net/mmfaq.htm
>Post: mailto:Elecraft at mailman.qth.net
>
>This list hosted by: http://www.qsl.net
>Please help support this email list: http://www.qsl.net/donate.html