SB-105

Fri Apr 5 14:41:32 EST 2002

I agree, my modern rig has both, 2 VFO's and the RIT/XIT options and I never use the RIT/XIT feature unless I'm chasing someone with an old radio that won't stay on freq.  I have a modern radio that is rock solid, and the only reason it's from outside the USA is because that's where the majority of everything is built today.  When you look at a radio that is built in the USA today, most of the components are imported.

It's still fun to fire up the old 101's,  102's and 104's but the fun of Heathkits was that you built them yourself.  The people at Heathkit found that most people could not build the radios at home that would compete with the new miniature circuits on the market even then.  That's why they got such a large percentage  of their last radios back at the factory for final building/trouble shooting. Can you imagine trying to build a rig at home that actually has 3 to 4 separate radios inside, and is the size of a CB radio.

Well that's my opinion.

73's,

Jerry, K0EJF

----- Original Message -----
From: WYsixK
Sent: Friday, April 05, 2002 11:59 AM
To: HEATH at LISTSERV.TEMPE.GOV
Subject: Re: SB-105

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  So I think XIT is obsolete if you have two VFOs but not if you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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