Griffin EarJams

[Chris Kantarjiev K6DBG]

My XYL came home with these last weekend:

http://www.griffintechnology.com/products/earjams/

She has small ears, and couldn't get her ipod's earbuds to stay in.
These worked out really well for her. That used up only one pair - the
other pair happen to fit the earbuds I use with my K2 (I don't have a
set of headphones that I like for radio work...)

Wow, what a difference! They're not kidding about increasing the volume
and isolation. I typically kept the AF pot between 9 and 12 o'clock; now
I rarely get it as high as 9 o'clock (in fact, the earbuds may be *too*
sensitive).

An interesting artifact of this is that at the very bottom of the AF
pot's range, there seems to be an area where I can hear very weak
signals but the atmospheric noise hasn't quite come in...

The only downside is that she needs to stand in front of me to get my
attention when I'm playing radio :-)

These might be really good for my KX1, which is always too quiet...

73 de chris K6DBG

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[Bill VanAlstyne W5WVO]

Chris Kantarjiev wrote:

> An interesting artifact of this is that at the very bottom of the AF
> pot's range, there seems to be an area where I can hear very weak
> signals but the atmospheric noise hasn't quite come in...

This is fascinating. It could be an artifact of the radio's design, or...
Could we possibly be seeing a process here in which the dynamic range of the
human ear/wetware is being increased by lowering the amplitude range of the
input? Maybe mammalian ears evolved to work better (i.e., more
discrimminatingly) at lower volume levels... This might make sense in
evolutionary terms, when you come to think about it.

Bill W5WVO

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[Chris Kantarjiev K6DBG]

Bill W5WVO wrote:

> Chris Kantarjiev wrote:
>
>> An interesting artifact of this is that at the very bottom of the AF
>> pot's range, there seems to be an area where I can hear very weak
>> signals but the atmospheric noise hasn't quite come in...
>
> This is fascinating. It could be an artifact of the radio's design,
> or... Could we possibly be seeing a process here in which the dynamic
> range of the human ear/wetware is being increased by lowering the
> amplitude range of the input? Maybe mammalian ears evolved to work
> better (i.e., more discrimminatingly) at lower volume levels... This
> might make sense in evolutionary terms, when you come to think about it.

Or my ears could be broken :-)

Now that you mention it, though, it mimics my experience at louder
volumes, where turning the AF gain *down* makes the signal stand out
more and copy easier.

I was just really surprised to hear the volume of the noise seem to come
up separately from the signal. And pleased to find that I could hear the
signal with the EarJams on, and that it was completely missing with them
off ... but I don't have a closed headphone to compare with.

All this will probably be moot in, oh, a couple of years when the
sunspots come back :-)

73 de chris K6DBG
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[Thom LaCosta]

I am using Puppy Linux and have installed FLDIGI.  Is anyone using this to
control their K2 and/or the K3?

Being a Linux dummy...I would be willing to install some other logging/control
program, IF there are howtos for the Linux impaired.

Thanks

73 - k3hrn

Thom,EIEIO
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