[TenTec] Eagle AT slow?

[Bob McGraw - K4TAX]

Well yes, the routine for the Eagle is slower than many other tuners, even 
the one in the Orion and Omni VII series.  Those are different tuners and 
have their own processor to handle solely the tuning routine.  The big 
difference with the Eagle ATU, it shares the processor that handles the 
radio and its associated housekeeping chores.  Your referenced MFJ has its 
own processor to handle the tuning routine and it does nothing else.

As to activating the TUNE routine on a frequency, if you do it again it will 
run the routine again.  Typically I find it slower on the lower frequencies 
as opposed to the higher frequency bands just as you have indicated.

If you run the TUNE routine on 75M and then switch to 40M and run the TUNE 
routine and then switch to 20M and run the TUNE routine, when you switch 
back to 75M, same frequency, you will find that a proper match exists as the 
tuner has stored the parameters for 75M.  Thus it is not necessary to run 
the TUNE routine.   Same for the other bands as well.  Now if you have 
switched back to 75M and press the TUNE for the routine, it will again run 
through the steps to find the correct match even though it had previously 
found a match.  In each case, when TUNE is activated the tuner will run 
through the routine regardless of what was done or stored earlier.

73
Bob, K4TAX



----- Original Message ----- 
From: "K3GHH" <k3ghh at arrl.net>
To: "Discussion of Ten-Tec Equipment" <tentec at contesting.com>
Sent: Sunday, September 07, 2014 5:33 PM
Subject: [TenTec] Eagle AT slow?


> I'd welcome some comments on the internal Eagle AT (Model 599AT).
>
> Here's mine: On 3570 KHz, where my MFJ-269 shows the old trap doublet has 
> an SWR of 2.7, the Eagle took 15 seconds to tune. Leaving it on that 
> frequency, a minute or so later a second try also took 15 seconds. A third 
> tune, on the same frequency another minute later, took 10 seconds.
>
> On 40m, where the SWR is 2.1, tuning takes 7 seconds.
>
> I know the old antenna here at the camp needs work... but that behavior on 
> 80 doesn't seem right. The manual (p. 37) says the AT is "designed to 
> recall the last tuned setting for a given band." Maybe I don't understand 
> how that memory works, but I don't think the MFJ-293B that I have at home 
> would behave like this.
>
> --John K3GHH/2 _______________________________________________
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