[TenTec] Paragon II audio help

[Bob, WB2VUF]

I've been using a Motorola speaker that I got from Hosfelt Electronics.
It sounds better than the external Ten Tec speaker, especially on cw.


				Bob WB2VUF

Robert & Linda McGraw K4TAX wrote:
> 
> David & company;
> 
> My experience with audio indicated that there is room for improvement in the
> audio chain of most amateur receivers.  However, when one evaluates the
> performance, one must ask, are we expecting performance of a "communications
> receiver" or a "Hi Fi receiver"?  For me one of my "new" sidelines is 160M
> AM, full bandwidth high level modulation, with a receiver having a bandwidth
> of at least 12kHz in the IF and the audio pass band to follow.  Wow, what a
> difference.
> 
> In the audio path, changing from electrolytic caps to non-polar or poly caps
> may make a difference in some cases.  One other area of weakness and most
> often is the speaker and its enclosure that is provided with today's modern,
> compact, radios.  A good speaker, and not necessarily a Hi Fi speaker, will
> add improvement to most any radio. I use a JBL 10" bass reflex design in a
> solid wood cabinet.  It's very efficient down to 100Hz or so, therefore a
> couple of watts of audio really makes it talk.  It has a nice roll-off
> starting at about 5KHz so the hiss and etc is not objectionable.
> 
> I agree, external EQ's, amps and the like are often "patches" but if they do
> the job that one wants done, then I say "do it".
> 
> 73
> Bob K4TAX
> 
> ----- Original Message -----
> From: "David McGinnis" <n7mjw@yahoo.com>
> To: <tentec@contesting.com>
> Sent: Sunday, January 06, 2002 6:17 PM
> Subject: [TenTec] Paragon II audio help
> 
> > Help with Paragon II audio
> >
> > I have had a Paragon II radio for a while and have
> > always thought the audio
> > sounded "weak" or mushy.  What I mean is the signals
> > dont have seem to
> > jump out like some other rigs.  This is on SSB.  For
> > instance comparing to a
> > Harris RF-350, the signal strenghts are the same and
> > are of the same quality
> > between the two, but everything on the Harris seems
> > clearer and easier to copy
> > than the Ten Tec.  The Ten Tec has a nice receiver,
> > and signals really do sound
> > 5/9 at levels well below other receivers, but those
> > same signals seem flat in
> > response and dont stand out like they should.  This is
> > kind of the reverse of
> > what Bob Heil says about microphones.
> >
> > I've been through this in the past with another rig
> > and have replaced the diodes
> > in the product detector ring and have had positive
> > results.  The Paragon II doesn't
> > seem to have a simple diode detector ring however.  I
> > have even clean up hiss in
> > audio section by replacing electrolytic capacitors
> > with polyester bi-polar caps.
> > The Paragon does not seem to have the hiss problem.  I
> > do not believe "cleaning up"
> > with DSP is ever a cure for a problem in the receiver
> > and wont go there.
> >
> > The radio has been back to Ten Tec for a re-alignment.
> >
> >
> > What I'm asking from the group is if anybody has
> > explored this ground with the
> > Paragon series of radios.  I have never had an Omni to
> > compare this to, but I
> > do believe the problem is common in some Amateur
> > equipment.  I like so much else
> > about this rig that I would like to "fix" or "improve"
> > it.
> >
> > Thanks in advance.
> > Dave
> > N7MJW
> >
> >
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