[TenTec] Orion Roofing Filters

[Steve N4LQ]

Then to determine if the problem is the radio or the filter, I would remove
the filter and stick a .01mfd capacitor across the two hot pin holes, engage
the filter and see if you still get that 20db of attenuation. If you do,
then the rig is broken if not, then something very strange is wrong with
that filter. Maybe a crack somewhere else.

Steve N4LQ
----- Original Message ----- 
From: "Mark Erbaugh" <mark at microenh.com>
To: <tentec at contesting.com>
Sent: Sunday, July 25, 2004 7:17 PM
Subject: Re: [TenTec] Orion Roofing Filters


> Steve,
>
> Thanks. I looked at the connections carefully under a lighted magnifier
and
> could see no cracks. I went ahead and re-soldered all four pins, just in
> case.  Unfortunately, that didn't help. I'm still seeing about 20 dB more
> attenuation going through the 250 Hz filter than through the 500 Hz
filter.
>
> 73,
> Mark
>
> ----- Original Message ----- 
> From: "Steve N4LQ" <n4lq at iglou.com>
> To: <tentec at contesting.com>
> Sent: Sunday, July 25, 2004 4:21 PM
> Subject: Re: [TenTec] Orion Roofing Filters
>
>
> > Yes. Sometimes stress on the pins will cause the foil to crack around
> them.
> >
> > Steve N4LQ
> > ----- Original Message ----- 
> > From: "Mark Erbaugh" <mark at microenh.com>
> > To: <tentec at contesting.com>
> > Sent: Sunday, July 25, 2004 4:03 PM
> > Subject: Re: [TenTec] Orion Roofing Filters
> >
> >
> > > Thanks, I'll take a look. Are you referring to the pins that mount the
> > > filter into the radio?
> > >
> > > 73,
> > > Mark
> > >
> > > ----- Original Message ----- 
> > > From: "Steve N4LQ" <n4lq at iglou.com>
> > > To: <tentec at contesting.com>
> > > Sent: Sunday, July 25, 2004 3:51 PM
> > > Subject: Re: [TenTec] Orion Roofing Filters
> > >
> > >
> > > > Look for a hair-line crack in the foil around the pins of the
filter.
> > > > Happens all the time! Just a dab of solder will fix it.
> > > >
> > > > Steve N4LQ
> > > > ----- Original Message ----- 
> > > > From: "Mark Erbaugh" <mark at microenh.com>
> > > > To: <tentec at contesting.com>
> > > > Sent: Sunday, July 25, 2004 3:53 PM
> > > > Subject: Re: [TenTec] Orion Roofing Filters
> > > >
> > > >
> > > > > I have swapped the 250 and 500 Hz filters and the problem seems to
> > > follow
> > > > > the 250 Hz filter, so it looks like that is the culprit.  Do you
> know
> > if
> > > > > these filters can be repaired? Does TT repair them? It doesn't
look
> > like
> > > > > there is much to them, just the crystals and a few capacitors.
> > > > >
> > > > > On a related question.  I put the 250 Hz filter in my Orion only
> > because
> > > I
> > > > > had one available.  If the filter can't be repaired, is it worth
> > buying
> > > a
> > > > > replacement? Has anyone encountered a situation where the 250 Hz
> > filter
> > > > > improved reception over the 500 Hz filter?
> > > > >
> > > > > 73,
> > > > > Mark
> > > > >
> > > > > ----- Original Message ----- 
> > > > > From: "Lee A Crocker" <lee_crocker at yahoo.com>
> > > > > To: <tentec at contesting.com>
> > > > > Sent: Saturday, July 24, 2004 1:52 PM
> > > > > Subject: [TenTec] Orion Roofing Filters
> > > > >
> > > > >
> > > > > > Mark
> > > > > >
> > > > > > why don't you switch the 500 and 250 and see if the
> > > > > > loss behavior changes to the 500hz position.  This
> > > > > > would, I believe, virtually diagnose a bad 250hz
> > > > > > filter
> > > > > >
> > > > > > Lee W9OY
> > > > > > _______________________________________________
> > > > > > TenTec mailing list
> > > > > > TenTec at contesting.com
> > > > > > http://lists.contesting.com/mailman/listinfo/tentec
> > > > > >
> > > > >
> > > > > _______________________________________________
> > > > > TenTec mailing list
> > > > > TenTec at contesting.com
> > > > > http://lists.contesting.com/mailman/listinfo/tentec
> > > > >
> > > >
> > > > _______________________________________________
> > > > TenTec mailing list
> > > > TenTec at contesting.com
> > > > http://lists.contesting.com/mailman/listinfo/tentec
> > > >
> > >
> > > _______________________________________________
> > > TenTec mailing list
> > > TenTec at contesting.com
> > > http://lists.contesting.com/mailman/listinfo/tentec
> > >
> >
> > _______________________________________________
> > TenTec mailing list
> > TenTec at contesting.com
> > http://lists.contesting.com/mailman/listinfo/tentec
> >
>
> _______________________________________________
> TenTec mailing list
> TenTec at contesting.com
> http://lists.contesting.com/mailman/listinfo/tentec
>