Strange... so many different experiences. My Scout will toggle up and
down about 10 Hz (just barely noticeable) as the FLS corrects the PTO
when using the internal keyer, but with a straight key it had a fast,
steady drift, which was really bad until it warmed up. I think that heat
from the final was creeping along the chassis side rail and heating up
the PTO. Putting in the mod described in QST fixed the problem, although
I'm still tinkering with the temperature compensation caps.
Maybe there were a couple of versions of Scout software that handled the
FLS differently. I wish Ten Tec would publish service bulletins.
Still, I've used the Scout portable on vacation and field day with great
success.
The only time mine drifted on SSB was when I had a loose and corroded
crimp connection at the vehicle battery. Now I solder all lugs onto the
power cables and I am replacing the fuses and holders with auto types.
73,
Bob WB2VUF
Bill Nicolson wrote:
>
> Hi Guys,
> I guess "drifting problem" was not a good selection of words to describe the
> Scouts much documented transmitted frequency step problem.
> The processor corrects the freqency for changes in the PTO and when running
> high speed CW (over 15 wpm) the CW note changes on TX. I have heard it on
> almost every scout I have worked. Its not enough of a change to move outside
> of the passband of a narrow (250hz) RX station but definitely a pitch change
> occurs. And I have heard it on both 555 & 556 models. Its still a great
> rig!!
> Bill K2rig
>
> ----- Original Message -----
> From: "Ronnie Zoerb" <r.zoerb@worldnet.att.net>
> To: "Ten Tec Reflector" <tentec@contesting.com>
> Sent: Saturday, March 15, 2003 11:21 AM
> Subject: [TenTec] Field Day GOTA Station - Scout Drifting!
>
> > Sorry to hear about your "drifting problem" Bill. Have not experienced
> that
> > with my 2 TT # 555 Scouts or either of the 2 TT # 556 Argos. Doubt very
> > seriously you could pick them out of a crowd as long as sufficient voltage
> > is supplied.
> >
> > I believe a Scout or Argo either one would make an excellent FD GOTA
> > station for CW or SSB. Very much under rated and reasonably priced
> equipment
> > that is built to last in the field, mobile or on the bench.
> >
> > IMHO. 73 Ron KI0II
> >
> > _______________________________________________
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> > TenTec@contesting.com
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>
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