[TenTec] Bandwidth, Mode, Storage of values

N4PY2 n4py2 at earthlink.net
Sat Jun 19 05:24:14 PDT 2010


It sounds like John Henry has described exactly what is wrong with the 
bandwidth setting and what needs to be fixed to make it work correctly.  To 
me it seems that a band register store command needs to be done anytime the 
bandwidth is changed after a second or so from a timer.

Carl Moreschi N4PY
121 Little Bell Dr
Hays, NC 28635
www.n4py.com


----- Original Message ----- 
From: "Gary Hoffman" <ghoffman at spacetech.com>
To: "Discussion of Ten-Tec Equipment" <tentec at contesting.com>
Sent: Friday, June 18, 2010 11:23 PM
Subject: Re: [TenTec] Bandwidth, Mode, Storage of values


> An excellent and timely reponse.   Thanks John Henry.
>
> 73 de Gary, AA2IZ
>
>
> ----- Original Message ----- 
> From: "Henry, John" <jhenry at tentec.com>
> To: "Discussion of Ten-Tec Equipment" <tentec at contesting.com>
> Sent: Friday, June 18, 2010 10:46 AM
> Subject: [TenTec] Bandwidth, Mode, Storage of values
>
>
>> 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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>
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