dave wrote:
What is the point of IF shift? What purpose does it serve?
Can't you do the same thing (or nearly so) with RIT?
My understanding of IF shift is that it allows you to move an
interfering signal to the edge of the passband and attenuate it by doing
so. Seems that nearly the same result can be achieved with RIT. Please
correct me if I'm wrong on this.
73 de dave
ab9ca
Timing is everything, I just logged on and there was your question. IF
shift [a la the TS830] moves the signals in the passband but does not
change their pitch. RIT moves them, but their pitch changes. I sold my
TS830 with IF shift, and I do miss it on the TS850 and K2 [although the
K2 filters are so good, they tend to make up for it a little]. IF Shift
[aka passband tuning from the Collins days] is cool on CW, and fantastic
on RTTY. Art Collins achieved it in the 75A4 by actually rotating the
entire PTO assembly to keep the received pitch the same. Now days it's
done with magic.
73,
Fred K6DGW
- Northern California Contest Club
- CU in the 2007 CQP Oct 6-7
- www.cqp.org
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