What do you mean the antenna can't be de sensed.  De sensing doesn't 
really have anything to do with the antenna unless you're playing with 
spacing and so forth.  If you're using a duplexer, the antenna has no 
effect unless it is not a good match.  I've built and maintained manya 
repeaters over the years and have tuned up many duplexers, both band and 
reject and band pass as well as notch.
73s
Butch Bussen
wa0vjr

On Sun, 13 May 2007, Anthony Vece 
wrote:

> Hi Pat & List;
>
> Maybe the HDTV antenna is made on the order of a repeater antenna.
>
> What I mean is it can't be desensed.
>
> 73 De Anthony W2AJV
> [log in to unmask]
> ECHOLINK NODE NUMBER: 74389
>
>  ----- Original Message -----=20
>  From: Pat Byrne=20
>  To: [log in to unmask]
>  Sent: Sunday, May 13, 2007 1:18 PM
>  Subject: Re: [BLIND-HAMS] off topic fm and am antanna help
>
>
>  An antenna cut to frequency is just that, I would venture.  So, HDTV=20
>  is more than likely a marketing strategy.
>  Simple is good; I would use a folded dipole, about forty inches on a=20
>  side, made of 300 ohm feed line, and fed with the same=20
>  feedline.  Simple and inexpensive.
>  Good luck.
>  Pat, K9JAUAt 10:37 AM 5/13/2007, you wrote:
>  >some one also recommended a hd tv antanna
>  >would this work as well?
>  >thanks
>  >Hank
>  >----- Original Message -----
>  >From: "Ken" <[log in to unmask]>
>  >To: <[log in to unmask]>
>  >Sent: Sunday, May 13, 2007 5:01 AM
>  >Subject: Re: off topic fm and am antanna help
>  >
>  >
>  > > Hi Hank, I've done much reading on this subject of improving fm =
> reception
>  > > with an indoor antenna.  As you already learned, amplified =
> antennas don't
>  > > work.  I also tried the BesBuy indoor active Terk fm tower with no =
> luck.
>  > > I
>  > > really don't think you can do much better than the good old rabbit =
> ears
>  > > antenna for indoor antennas.  The trick to using one of these =
> antennas is
>  > > getting the right location and orientation.  On some stations just =
> moving
>  > > the elements an inch or so will cause me to lose my station.  Also =
> try
>  > > setting the elements to about a 40 degree angle and then tip the =
> setup in
>  > > the direction that gives the best signal.  If you can get the =
> rabbit ears
>  > > into a crawl space in  to the attic this might help.
>  > >
>  > > Try a loop.  Length is 1005/Freq in Mhz (about 10 feet for fm).  =
> Connect
>  > > the
>  > > ends of the wire to the 300-ohm side of a 300 to 75 ohm balun.
>  > >
>  > > Below I've listed a couple of antennas I'm researching, but have =
> not
>  > > tried.
>  > > They are both really just dipoles but these antennas are often =
> mentioned
>  > > in
>  > > the audiophile articles I like to read.
>  > >
>  > > The Silver Ribbon Antenna by Magnum Dynalab
>  > > The SR-100
>  > > (I think it's about $35 if you can find one)
>  > > A high-efficiency indoor antenna that is ...
>  > > . Continuously tunable across the FM dial to maximize reception,
>  > > . Rotatable for best station orientation.
>  > > . Designed to complement just about any FM system arrangement.
>  > > . Receives local HDTV signal with ease due to its UHF design.
>  > > . Directionality helps in solving problems due to multi path =
> interference
>  > >
>  > >
>  > > And then Ccrane has a $35 dipole (I think it's just an off-center =
> fed
>  > > dipole), but it might be worth a try.  About $35.
>  > >
>  > >
>  > > Good luck,
>  > > 73, Ken -N5SWR
>  > >
>  > > -----Original Message-----
>  > > From: For blind ham radio operators =
> [mailto:[log in to unmask]]
>  > > On Behalf Of hank smith
>  > > Sent: Saturday, May 12, 2007 6:49 PM
>  > > To: [log in to unmask]
>  > > Subject: off topic fm and am antanna help
>  > >
>  > >
>  > > Hello.
>  > > I am trying to pull in some week signals out of seattle wa from =
> olympia
>  > > wa.
>  > > I am running a boston acoustics recepter
>  > > currently I am using a pair of rabbit ear tv antanna's in the =
> horzontal
>  > > possission and am getting a little better results but I am needing =
> a bit
>  > > more recieving power on fm and I am also needing some am =
> recommendations.
>  > > I purchased a amplified am/fm antanna from terk for 30 dollars =
> from best
>  > > buy
>  > >
>  > > and it was the worst performming antanna that was amplified I ran =
> in to
>  > > even
>  > >
>  > > with the amp maxxed, it had a amp dial that you could adjust.
>  > > any recommendations for indoor use that I can purchase at a local =
> store?
>  > > either from radio shack best buy or some other  place?
>  > > thanks
>  > > Hank
>  > >
>  > > No virus found in this incoming message.
>  > > Checked by AVG Free Edition.
>  > > Version: 7.5.467 / Virus Database: 269.6.8/800 - Release Date: =
> 5/11/2007
>  > > 7:34 PM
>  > >
>  > >
>  > > No virus found in this outgoing message.
>  > > Checked by AVG Free Edition.
>  > > Version: 7.5.467 / Virus Database: 269.6.8/800 - Release Date: =
> 5/11/2007
>  > > 7:34 PM
>  > >
>