As I grow older my ability to differentiate signal from noise is
changing in different frequency bands. Though it takes more
concentration, I find now (I turned 50 last year) that I often listen
below 500 Hz whenever I can. I can use the 600 Hz offset OK, but it
doesn't work well for me if the signal is weak and next to the noise.
In fact, I find that during long CW QSO's, I like to have the RIT
engaged so that I can vary the tone I listen to, it seems to keep my
concentration up. I don't go above 600 Hz very much, just occasionally
for a change. It is just plain hard on my ears :-)
Clark
WA3JPG
On Jan 12, 2005, at 8:23 AM, John L Merrill wrote:
Bill:
I wonder how many do use an offset that low?
John N1JM
-----Original Message-----
From: tentec-bounces@contesting.com
[mailto:tentec-bounces@contesting.com]On Behalf Of Bill Tippett
Sent: Wednesday, January 12, 2005 8:28 AM
To: tentec@contesting.com
Subject: Re: [TenTec] New roofing filter in Omni VI- Opt. 1
NI0C wrote:
The roofing filter is designed for a CW offset of 700
Hz, and works fine with the slightly different offset (600 Hz) of the
753.
I suspect that Inrad chose 700 Hz as a compromise offset so that it
would
work equally well with their 600 Hz offset filter and the standard Ten
Tec
750 Hz offset.
Wow! Is that right? I NEVER listen with CW pitch higher
than 450 Hz and normally use 270 Hz for really weak signals. The
ability to set Orion to a pitch below 300 Hz is one of its major
benefits IMHO.
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