SB-105

[WYsixK]

What's an SB105?

It's been so long since I used XIT for anything that I'm tempted to say
you don't need it at all.  However, the problem with your reasoning is
that you mess up the receive tuning if you touch the main dial as a way
of changing the transmit frequency.  I actually think this goes back to
the drifty signal days.  You used RIT to keep following the drifting
station you were working and you didn't want to change the transmit
frequency because that just caused the other station to chase you.  The
result was two staions that worked their way up or down the band during
a QSO.  So I think XIT is obsolete if you have two VFOs but not if you
only have one.

FWIW
Michael
--- Brian Wood <brianmwood at EMAIL.MSN.COM> wrote:
> I'm sitting here designing the SB-105 and have a question you guys
> might be
> able to answer.
>
> You know how most modern rigs have RIT and XIT? Why does it need to
> be a
> separate knob? When you push the RIT button and turn the knob, you
> don't
> touch the main tuning. Once you've set the RIT/XIT, if you changed
> the main
> tuning, the RIT and XIT offset would stay the same. Seems like you
> oughta be
> able to use the big tuning knob and a RIT enable button and a XIT
> enable
> button and a Clear with the main tuning knob. Especially with full
> dual
> receive capability where RIT/XIT is sort of academic.
>
> There's a good reason. RIT knobs are encoders, and they are
> expensive. You
> already have a very accurate encoding dial in the main tuning that
> you don't
> use when using RIT, so why not use it? Do you think people would find
> it
> annoying that RIT/XIT works a little differently than IKenYa?
>
> I know this is slightly off topic, but I really need the advice of a
> large
> group of hams, and what better place than this? Please reply
> off-list.
>
> Brian, W0DZ
>
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