John,
Yes, it does help. Thanks for the explanation.
73 Ray W2RS
In a message dated 6/18/2010 2:48:20 P.M. GMT Standard Time,
jhenry@tentec.com writes:
I've been watching the discussion on bandwidth getting saved, not
getting saved, and can provide a few comments that might show why
certain people are saying that these are working fine, and that others
say they are broken.
Two things to keep in mind.....
1 - Band Registers are only stored when the band or band register changes.
2 - Mode-Specific BW registers are only stored when the MODE is changed.
When powering back on, the last bandstack that the rig was on will be
recalled.
This means that the bandwidth for the mode used on that bandstack will
be recalled.
For example, do the following:
Turn on the rig.
Make sure that the Main RX LED is lit (if not, press Main RX button)
Go to 20Mtrs Bandstack A register by pressing 20.
Set the main frequency to 14.250
Set the mode to USB
Set the BW to 2410
Now press 20 continually to get back around to 20mtrs Bandstack A.
You will notice that the mode and the BW were whatever they were on B,
C, D (in my test case, after a master reset, they will all show
14.250, USB, BW=3000)
When you get back around to 20mtrs Bandstack A the values revert to
14.250, USB, BW=2410.
Power off the rig.
Power it back on.
It will show 14.250, USB, BW=2410 on 20mtrs Bandstack A. (not the default
3000)
Now, change BW to 2390
Power off the rig
Power it back on.
You will notice that it still reverts to 14.250, USB, BW=2410 on
20mtrs Bandstack A.
The reason is the last time the 20mtrs Bandstack A was saved, the USB
BW was 2410.
Change Mode to UCW.
Change the bandwidth to 900
Now press 20 continually to get back around to 20mtrs Bandstack A.
You will notice that the mode and the BW were whatever they were on B,
C, D (for me, or after a master reset, they will all show 14.250, USB,
BW=3000)
When you get back around to 20mtrs Bandstack A the values revert to
14.250, UCW, BW=900.
Power off the rig
Power it back on.
My rig came back up with 20mtrs Bandstack A set at 14.250, UCW, BW=900..
So we have seen that bandstack changes can cause the bandstack data to
get stored.
Changing from 20mtrs Bandstack A to 40mtrs Bandstack X will do the same.
So a quick way to save the bandstack settings before you power off is
to "go somewhere else then back". This could be simply pressing a
different band's button, then back to the one you are on, or by
cycling through the bandstack you are on getting back to the A/B/C/D
you want to power up on.
BW is set to something you typically use in a bandstack register, and
if you change it for a given band condition or operating instance that
requires a tighter bandwidth, typically you will want to revert to the
normal value you usually use, not the adjusted value. That is why BW
is not stored just because you change it. If you want it remembered as
your bandwidth for that bandstack register for that band, then "go
somewhere else then back.".
User memories, when recalled, use the same philosophy.
They will remember the band that you are on, and the band stack
setting, which includes the mode. The last mode for that bandstack
that is saved also means the last BW for that bandstack you were on.
So if you store into USER 1 when you are at 14.250, USB, 2500,
then change BW to 2800, pressing USER 1 will revert to 2500. because
2500 was what was stored for that bandstack, not 2800.
You can see this easier if you run a quick test where you set band
stack A to USB 2490, bandstack B to USB 3020, bandstack C to USB 3030,
and bandstack D to USB 3040.
Go back to bandstack A, press/hold User 1.
then go to B, press User 1.
You will see the BW will end up going to 3020, because that was the
last bw USB was at when on bandstack B.
You will see similar when you go to C with 3030 and D with 3040.
User recalls are based on the freq/mode for the bandstack that you are on.
Can be confusing, but if you keep that concept in mind, then you can
get a lot of quick change flexibility out of using the different
bandstacks.
If you simply go to a mode, then change the bandwidth, power off, back
on, it will not remember the new bandwidth value, but it will recall
the last bandwidth value stored in that bandstack for that mode.
If you have the Sub RX LED lit, then things can get more complicated.
That is another email at another day.....
So, for me, I try to keep it simple.
If I want to make sure things are remembered, I "go someplace else
then come back".
If I want to narrow the bw to pick someone out, but don't care if it
is remembered, then just power off.
Hope that helps,
Thanks,
John Henry
TenTec Engineering
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