[1000mp] Inrad 1.8 Filters and Signal to Noise Problems

Wed, 13 Feb 2002 10:48:15 -0500

Mike,

Why not use standard punctuation so your postings are more readable?  You
have more periods than sentences by a considerable amount.
http://owl.english.purdue.edu/handouts/grammar/ is a reasonable web site
that can help you learn how to use punctuation to achieve clarity of
writing.

73,

Gary W2CS

> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]]On Behalf Of Mike Schatzberg
> Sent: Wednesday, February 13, 2002 9:12 AM
> To: [email protected]
> Subject: Re: [1000mp] Inrad 1.8 Filters and Signal to Noise Problems
>
>
> Peter.....
>
> Just an additional note.....I spoke with a Japanese friend in Japan on 10
> meters last night.....they are seeing the same thing in the Mark V....they
> have been warned that the Inrad mod. will void their
> warrantees.....This is
> definitely a topic for discussion.....Many operators are apparently
> dissatisfied world wide.....Apparently the Inrad mod does indeed help the
> situation.....but, since it is not plug in, some warrantee risk is
> involved.....
>
> 73,
>
> Mike Schatzberg
> WB2AJI
> http://www.qsl.net/vu2wap/wb2aji/
> ----- Original Message -----
> From: "Mike Schatzberg" <[email protected]>
> To: "Peter King" <[email protected]>
> Cc: <[email protected]>
> Sent: Wednesday, February 13, 2002 8:48 AM
> Subject: [1000mp] Inrad 1.8 Filters and Signal to Noise Problems
>
>
> > Hi Peter.....
> >
> > Yes, I have seen the same thing.....I am disappointed about the
> noise most
> > of all.....
> >
> > I can tell you that I have placed my JPS NIR 10 in the audio
> output line,
> > and listen to the Mark V on my Kenwood speaker......
> >
> > This is the only effective way to kill the noise and work the weaker
> > signals.....at least with my Mark V, the Mark V DSP settings are no as
> > effective in the IF, only the top button gives some improvement in
> > background noise reduction, and leaves the signal readable.....I called
> > Yaesu and discussed this with Andy Ormandi, their Mark V expert.....He
> > suggested lowering the IF Gain a bit.....I did this with some slight
> > improvement.....but, according to my signal generator on 10 meters, this
> > resulted in a slight decrease in sensitivity, and still didn't kill all
> the
> > noise......
> >
> > I will however change the filters to the Inrad 1.8s......With the DSP in
> the
> > audio line, it should work pretty well.....But, I believe I still will
> > eventually send the radio to Yaesu, and let them bench test and
> retune the
> > unit.....I'm not going to do it myself......why should I after spending
> all
> > that money....
> >
> > I also notice that my RF output is not consistently 200 watts across all
> the
> > bands....it starts out that way, but decreases to 175 on 20,
> about 150 on
> > 15, and maybe 125 or so on ten meters.....How about your unit, I checked
> > mine with an Autek Research WM-1......
> >
> > I'll let you know how the Inrad change works.....I won't send the unit
> back
> > to Yaesu, until it is completely burned in, and has a few
> hundred hours on
> > it......
> >
> > Best wishes & 73,
> >
> > Mike Schatzberg
> > WB2AJI
> > ----- Original Message -----
> > From: "Peter King" <[email protected]>
> > To: <[email protected]>
> > Sent: Tuesday, February 12, 2002 7:23 PM
> > Subject: another new Mark V owner...
> >
> >
> > > Hi, Mike. I read your comments re the 2K filters in the Mark V. I have
> > > only had my Mk-V a couple of weeks, having changed from
> Kenwood TS850's.
> > > I am pretty disappointed in the receiver. Was expecting the 2K filters
> > > to improve signal readability, but, if anything, they make copy worse.
> > > I have fiddled with shift, width, EDSP, and carrier point, all of
> > > which can improve the copy a bit, but, man, what a let-down.
> > >
> > > At this point, I don't think it is this or that filter, I think it is
> > > the
> > > radio. I tuned in to a local AM radio station, using non-sync
> AM tuning,
> > > and listened to the audio from the Mark V, side-by-side with
> a Kenwood.
> > > What a whopping difference! The Yaesu audio is slightly
> distorted, in AM
> > > and SSB, on all audio peaks, and a bit worse with AGC in slow
> position.
> > > I wonder if you have noticed anything similar?
> > >
> > > Are you considering the INRAD IF mod? Or have you put it in? Wondering
> > > if you noticed a difference in fidelity. ( I know, fidelity
> is not your
> > > main aim, as you said. )
> > >
> > > 73 de Peter (ve6epk)
> > >
> >
> > _______________________________________________
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> >
>
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