Discone scanner antenna question

Discone scanner antenna question

Post by RSmith96 » Sun, 13 Feb 2000 04:00:00

Hi all
I have a radio shack discone scanner antenna that I use for my scanner.They
advertise this antenna to transmit on 2 meters and 440.Is this so?If it is I
would like to use it on 2 meters untill I get a better ant up.How well do these
work?The one I have does not have the vertical element on top.It does have the
place for one, but it didn't come with it at the time I bought it.Can I get one
for it?Thanks for all replies.

73 Rob KG4GGX
P.S. I'm a new ham just getting started and I'm sure I will need much help.

 
 
 

Discone scanner antenna question

Post by K1BQ » Sun, 13 Feb 2000 04:00:00


Hi Rob--

Quote:>(RS Discone) ...transmit on 2 meters and 440.Is this so?<

I have a similar one (not RS), and it works fine.  VSWR is under 1.5:1 on both
bands.  Give it a try.

Quote:>How well do these work?<

About as well as a groundplane type antenna.      

Quote:>The one I have does not have the vertical element on top.It does have the

place for one, but it didn't come with it at the time I bought it.<

The vertical element on top--usually loaded with a coil--provides a narrow band
of coverage in the 50 MHz range to add "low-band" FM or Six meters (this is not
a broadband element).  It will contribute little or nothing to your antenna's
performance on 145 and 440 MHz.

73

Rick  K1BQT  

 
 
 

Discone scanner antenna question

Post by Matthew Bressle » Sun, 13 Feb 2000 04:00:00

Radio Shack has a discone antennae in their new catalog that sells for
approximately $50.  I own two of these.  They are excellent scanner antennas and
will transmit on 6 meters and above.  The single whip in the center is for 6m, and
it is tunable.  I have it set up in my living room so that I have a switch box so
that my scanner is always on but when I want to use the antennae to transmit I
switch it to my HT.  This works great!  You don't get near the performance that you
do with a real antennae (such as a beam) but it works well for a backup or as a
temporary.

73's

Matt  KB3EGW


> Hi all
> I have a radio shack discone scanner antenna that I use for my scanner.They
> advertise this antenna to transmit on 2 meters and 440.Is this so?If it is I
> would like to use it on 2 meters untill I get a better ant up.How well do these
> work?The one I have does not have the vertical element on top.It does have the
> place for one, but it didn't come with it at the time I bought it.Can I get one
> for it?Thanks for all replies.

> 73 Rob KG4GGX
> P.S. I'm a new ham just getting started and I'm sure I will need much help.

 
 
 

Discone scanner antenna question

Post by kenneth m cubil » Sun, 13 Feb 2000 04:00:00

hi i have one that i use for a secondary antenna, it works well but
not great. i can transmit from 144 all the way up to 1.2 ghz with very
low vswr.
ken w8ob

> Hi all
> I have a radio shack discone scanner antenna that I use for my scanner.They
> advertise this antenna to transmit on 2 meters and 440.Is this so?If it is I
> would like to use it on 2 meters untill I get a better ant up.How well do these
> work?The one I have does not have the vertical element on top.It does have the
> place for one, but it didn't come with it at the time I bought it.Can I get one
> for it?Thanks for all replies.

> 73 Rob KG4GGX
> P.S. I'm a new ham just getting started and I'm sure I will need much help.

 
 
 

Discone scanner antenna question

Post by RSmith96 » Sun, 13 Feb 2000 04:00:00

Hi Rick
Thanks for the reply

73 Rob KG4GGX

 
 
 

Discone scanner antenna question

Post by RSmith96 » Sun, 13 Feb 2000 04:00:00

OK
Thanks Matt

73 Rob

 
 
 

Discone scanner antenna question

Post by RSmith96 » Sun, 13 Feb 2000 04:00:00

Thanks Ken  

73 Rob

 
 
 

Discone scanner antenna question

Post by Greg » Mon, 14 Feb 2000 04:00:00

Hi ,
    Discone antennas should provide fairly good local coverage but are not
the best omni-directional antenna out there . However considering how broad
banded this antenna is , it yields decent results . The whip you refer to is
for use in the six meter band . But if you ever want to use the antenna for
six meter work , you can order just the whip itself from www.radioshack.com
or your local R/S store . I just checked the website and if you type in the
catalog number (200-043) it will pull the item up on your screen with a
brief description and several options , including a detailed parts list . I
hope this helps and welcome to amateur radio !

73 ,
Greg - KC8KUG

Quote:>Hi all
>I have a radio shack discone scanner antenna that I use for my scanner.They
>advertise this antenna to transmit on 2 meters and 440.Is this so?If it is
I
>would like to use it on 2 meters untill I get a better ant up.How well do
these
>work?The one I have does not have the vertical element on top.It does have
the
>place for one, but it didn't come with it at the time I bought it.Can I get
one
>for it?Thanks for all replies.

>73 Rob KG4GGX
>P.S. I'm a new ham just getting started and I'm sure I will need much help.

 
 
 

Discone scanner antenna question

Post by GLC11 » Mon, 14 Feb 2000 04:00:00


>I have a radio shack discone scanner >antenna that I use for my scanner.They
>advertise this antenna to transmit on 2 >meters and 440.Is this so?If it is I
>would like to use it on 2 meters untill I get >a better ant up.How well do
>these
>work?

   Discones are the electrical equivalent of  a quarter-wave.  No gain.
=======================================================
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Discone scanner antenna question

Post by Dave Holfor » Mon, 14 Feb 2000 04:00:00


>    Discones are the electrical equivalent of  a quarter-wave.  No gain.
> =======================================================

But it has 'bandwidth'

Dave

 
 
 

Discone scanner antenna question

Post by jlis.. » Mon, 14 Feb 2000 04:00:00


>> Discones are the electrical equivalent of  a quarter-wave.  No gain.
> then Dave Holford added:

> But it has 'bandwidth'

WA2CEP added his 2 cents:

So does a random length of coax connected to my dummy load. If I mount it
under my house it is both invisible to my neighbors (stealth) and
wide-band. It is low noise when receiving as well.

   -Jim

 
 
 

Discone scanner antenna question

Post by Bria » Mon, 14 Feb 2000 04:00:00



> >> Discones are the electrical equivalent of  a quarter-wave.  No gain.

> > then Dave Holford added:

> > But it has 'bandwidth'

> WA2CEP added his 2 cents:

> So does a random length of coax connected to my dummy load. If I mount it
> under my house it is both invisible to my neighbors (stealth) and
> wide-band. It is low noise when receiving as well.

>    -Jim

Jim, knock yourself out.  If you stick the same length of coax in an outlet
receptacle, you receiver will also get very quiet after a while.  In any
case, the discone is nothing like a dummy load.

Brian

 
 
 

Discone scanner antenna question

Post by gervai » Sat, 19 Feb 2000 04:00:00

Hi Greg,
Discone antenna are the all-dress ,all-service antenna if you like.
i have one here working on 2 repeaters.one on vhf and the other transmetter
is uhf and working great.
this is not a gain antenna but a general coverage.
the antenna i baught is a SIRIO ANTENNA from ITALY model SN1300N
www.sirioantenne.it

73/s
gervais
ve2ckn



> Hi ,
>     Discone antennas should provide fairly good local coverage but are not
> the best omni-directional antenna out there . However considering how
broad
> banded this antenna is , it yields decent results . The whip you refer to
is
> for use in the six meter band . But if you ever want to use the antenna
for
> six meter work , you can order just the whip itself from
www.radioshack.com
> or your local R/S store . I just checked the website and if you type in
the
> catalog number (200-043) it will pull the item up on your screen with a
> brief description and several options , including a detailed parts list .
I
> hope this helps and welcome to amateur radio !

> 73 ,
> Greg - KC8KUG


> >Hi all
> >I have a radio shack discone scanner antenna that I use for my
scanner.They
> >advertise this antenna to transmit on 2 meters and 440.Is this so?If it
is
> I
> >would like to use it on 2 meters untill I get a better ant up.How well do
> these
> >work?The one I have does not have the vertical element on top.It does
have
> the
> >place for one, but it didn't come with it at the time I bought it.Can I
get
> one
> >for it?Thanks for all replies.

> >73 Rob KG4GGX
> >P.S. I'm a new ham just getting started and I'm sure I will need much
help.