When I used the AFC, it worked fine, with no surprises. I did not
use the profile panel. I did use the pulldown menu at the top, and
occasionally set it for Multipath, which for me worked best on
backscatter and over the pole flutter. When I did select Multipath, a
bunch of the buttons were activated, including AFC. When
switching back to regular RTTY, I had to click on the AFC button to
turn it back off, and it stayed off.
Later in the contest I left it on, and it worked like a charm. It
quickly tuned in the signal, stayed put without wandering while I
transmitted, and did not turn itself on or off unexpectedly. I found it
much easier than using the RIT. If I used one radio, I might want to
minimize the boredom and feel more useful by using RIT, but I
wanted to concentrate on making use of the second radio :.)
I am using FSK, and did not change anything in the config panels
related to AFC.
73,
Barry
On 2 Oct 01, at 11:08, Hill, Don wrote:
> This AFC thing is a little out of control. I don't think
> anyone really knows what's going on with it. We have to look
> at what we know for fact:
>
> The only thing we know for fact, that I can confirm, is that
> if you uncheck AFC in both the AFC and BPF sections of the
> MMTTY Setup screen, the AFC never comes on. That's what I did
> in CQWW and it never came on. I kept checking it and AFC
> stayed off. I did not use any profile buttons.
>
> Everything else we don't know. I suspect that the root of
> the problem is the BPF AFC Connection. The easiest way to
> turn AFC on and off is by way of the Profile panel at the
> bottom of the RTTY Control panel, if you have it active. I
> tested only one profile before the contest and that was
> the Standard profile P1. I set the Profile P1 for AFC off
> on both AFC and BPF sections, then saved it. I then went
> into the MMTTY Rttyrite setup and checked AFC on for
> CQ and AFC off for S&P.
>
> I then pressed the P1-CQ profile and saw that AFC indeed
> became active as shown by the check mark in the AFC box on
> the AFC tab of the MMTTY Setup screen. The mark frequency
> changed. I then pressed P1-S&P profile button and rechecked
> MMTTY Setup and it showed AFC off on the AFC tab with a
> mark frequency of 2125 hz - PERFECT or not?
>
> However, I did not check to see if when I hit P1-CQ if the
> AFC Connection on the BPF became checked on again and I did
> not check it again when I hit P1-S&P. So my test is not
> complete.
>
> Some of you need to experiment with it on your own. I'm
> convinced that AFC is a nice feature but not absolutely
> needed. I didn't use it all. Most of us are pretty used
> to using the RIT on our radios. I don't think it's that
> much of an inconvenience. And besides, did you notice that
> MMTTY copied fine in most cases where the signal was off
> frequency and AFC was off? Then again, if AFC is available,
> I suppose it needs to be used since it is an advantage.
>
> We need some detailed testing before JARTS. I will try
> to do some testing. I will add it to the other 10,000 things
> I have to do this month. hi Don't rely on me to figure
> this thing out. I'm resigned to keeping AFC OFF period for
> now.
>
> The reports are that AFC somehow turns itself on and off
> when it's not supposed to. We need to determine why it
> does this. I believe the first thing we need to look at
> is what the BPF AFC Connection's function is and how it
> acts when AFC is turned on and off in the Profile panel.
> Once this is determined, maybe we can get Jorgen to make
> it so that this BPF AFC Connections is turned off when AFC
> is turned off. I don't know if this is solution or not,
> but it needs to be confirmed.
>
> 73, Don AA5AU
>
> -----Original Message-----
> From: n3oc@wirelessinc.com [mailto:n3oc@wirelessinc.com]
> Sent: Tuesday, October 02, 2001 8:30 AM
> To: writelog@contesting.com
> Subject: [WriteLog] AFC on and off?
>
>
> I had similar AFC problems... is this a MMTTY problem or a writelog
> thing?
>
> When CQing, I need the AFC on, and it kept turning itself off.
>
> When S&Ping, I need it off and it kept turning itself on.
>
> any ideas? I ended up using the RIT on the rig when it turned itself
> off... what a pain...
>
> 73, Brian N3OC
>
>
> > > So if you turn AFC off on the AFC tab, then
> > > uncheck AFC Connection in the BPF section, then
> > > AFC will NEVER come on unless you program it
> > > into a Profile and change profiles.
> >
> > So if you do that:
> >
> > 1. Can you still click on the AFC button on the plugin control
> > panel to turn it on?
> >
> > 2. And if so, does it STAY on?
> >
> > I not only had it coming on when I didn't want it, I also had the
> > problem
> of
> > it going off when I wanted it on. I like it on when running. I
> > don't
> know
> > why anyone would NOT want it on then, except if they can't remember
> > to
> turn
> > it off when switching to S&P.
> >
> > tnx
> >
> >
> > _______________________________________________
> > WriteLog mailing list
> > WriteLog@contesting.com
> > http://lists.contesting.com/mailman/listinfo/writelog
> >
>
>
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--
Barry Kutner, W2UP Internet: w2up@mindspring.com
Newtown, PA Frankford Radio Club
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