SO2R thoughts

[Cookie]

When I have thoughts about SO2R my thoughts run toward RS-232, antenna switching, antenna isolation, audio switching, key switching, headphone switching, etc.  I would think audio compensation and design would be a concern in individual transceiver design rather than having much to do with SO2R.  I am also concerned about which, if any auxiliary control boxes to purchase or build and which loggers to use for every day DXing and Contesting.  Is any one else having such thoughts?  When I hear fidelity mentioned as I tune across the bands, I just keep on tuning because I can't even hear the fidelity, much less apply it to SSB.

I can identify with the Navy Carrier Vet even though my hearing loss is due to a combination of Measles, Asian Flu, 2500 hours in a B-52, 1000 hours as a private pilot, 60 years of Morse, not to mention 30 years in a Chemical Plant around gas and steam valves, compressors, turbines and the like. I can't tell the difference between a K3 and the best fidelity that Best Buy has to offer.  I am a Chemical Plant Control Engineer, not an Audio Engineer.
 
Willis 'Cookie' Cooke, TDXS DX Chairman
K5EWJ & Trustee N5BPS, USS Cavalla, USS Stewart


________________________________
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [hidden email]

[Jim Brown-10]

Hi Tom,

Yes, there certainly is a conflict of interest involved when expensive
devices are sold by the prescribing physician. Same deal with
eyeglasses. :)  On the other hand, human senses are logarithmic in their
response, and our brains compensate a lot for any deficiencies. For that
reason, we get accustomed to loss of high end, which is quite common for
people our age, and made worse by noise exposures like yours. My XYL and
I both have significant hearing loss, mine a bit less than hers, and
we're considering hearing aids. BTW -- when you get to that, W6OAT is on
his second hearing aid, and he loves the new one he got from Costco.

Yes, you can use RXEQ to compensate for at least some of your hearing
loss. My friend K6DGW has rather severe hearing loss, and at my
suggestion, he's done exactly that. What you would do is set all of the
lower bands for maximum cut, and boost the higher bands. As a starting
point, set the four lowest bands to maximum cut (-18 dB), set the fifth
band to cut about 9 dB, set the highest band for  about +10 dB, the band
below it for about +6 dB. Listen to the result, and tweak the settings
of the higher bands "by ear."

See you in Dayton?

73, Jim


On 3/31/2014 6:07 AM, Chester Alderman wrote:
> Last week I had two audio test performed, performed by two different
> persons, on my hearing. Do you think it would be advantageous for one to use
> their audiogram plots to set the receive equalization in the K3? At age 75
> (and spending years on a Nave aircraft carrier) of course my low frequency
> range is 'normal' and then my high frequency, starting around 800 Hz starts
> dropping drastically. I do have some doubts about these audio test because
> if your hearing is 'good', they have no way of selling their over-expensive
> hearing aids.


______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [hidden email]