Thanks to K7HP and W4ZV for the taps hint!
Changing the taps value from 169 to 199 cured the oscillation problem
immidiately! Mine was set to 169 as default for some reason. Reading manual now
I can't also see any reason for not keeping this at the maximum 199.
73
Tonno
ES5TV
-----Original Message-----
From: tentec-bounces@contesting.com [mailto:tentec-bounces@contesting.com] On
Behalf Of Tõnno Vähk
Sent: Saturday, January 27, 2007 7:27 PM
To: Discussion of Ten-Tec Equipment
Subject: [TenTec] serious filter problem with Orion II
Hi,
that my 1st post here as a fresh OII owner. I am in the middle of the first
serious contest cqww160.
Already in the beginning of the contest OII developed a following problem:
Whenever I play around with BW control and go narrower than ca 200hz filters
seem to completely mess up and I start to here the band extremely wide, getting
tens of signals and strange noises like hash and cracks on top of that.
Basically as if I was hearing the whole band. I have to do restart to get rid
of this. This has happened a few times already not even changing the BW but
working at ca 300hz. IT comes like a wave taking about 5 sec maybe for the
filters to completely lose themselves. I have had to do ca 10 restarts and I
try to avoid going narrower or BW at all.
Has anyone seen anything like that? Running 2.037j here and NR or AGC settings,
etc do not seem to matter.
73
Tonno
ES5TV
p.s. having really hard time getting used to OII as it does not seem yet in any
way superior to my old trustworthy 95 vintage MP with all the mods and filters.
MP with INRAD roofing filter does not seem to be worse in any way but is more
quiet and signals are easier to copy in pileup. OII NR causes distortion in
signals and does not seem to improve S/N ratio, CW sidetone is ringing and the
volume seems to be not adjustable (?), S-meter shows 59+60 for every decently
strong signal:) I have gone through the 1 year of list archives about OII and
tried to take all advice into account. Hopefully will be able to get used to it
finally.
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