I have a simple scanner/shortwave receiver and have recently installed a
wire antenna. I have been able to pick up stations over 500 miles away.
However, it seems as though the stations are grouped in very narrow bands.
Is there a way to make the antenna "look" longer or shorter electronically
so that I have a greater range of frequencies? Thanks your help in advance.
Matthew




---
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.605 / Virus Database: 385 - Release Date: 3/1/2004

C'mon ... work with us ... what radio are you using?

:^]

jw
wb9uai

Shortwave Listening "SWL" - More Information Please

= = = "Matthew&Wendy" wrote in message
= = = ...

? I have a simple scanner/shortwave receiver and have recently
installed a wire antenna. I have been able to pick up stations
over 500 miles away.

READ - Shortwave 101 - How to Listen to the World
http://www.etoncorp.com/listeninggui...gGuide_new.pdf
http://www.odxa.on.ca/beginnersguide/swresources.html
http://www.aorja.com/shortwave.html
http://www.dxing.com/swlintro.htm
http://www.dxing.com/tips.htm
http://www.totse.com/en/media/radio_...ka/sw_faq.html

READ - An Introduction to Shortwave Listening:
http://www.odxa.on.ca/beginnersguide/dxguide.html
http://www.odxa.on.ca/beginnersguide/swintro.html
http://www.odxa.on.ca/beginnersguide/swwhen.html
http://www.odxa.on.ca/beginnersguide/swhear.html

READ - Starting Out in Short-Wave Listening - by Alan Watson
http://www.astrosmo.unam.mx/%7Ealan/swl/starting.html

READ - So you want to become a Short Wave Listener ?
http://www.innotts.co.uk/asperges/swl.html

RESOURCE - The Association of North American Radio Clubs (ANARC)
http://www.anarc.org/


? However, it seems as though the stations are grouped in very
narrow bands.

SHORTWAVE BANDS - That is Why they 'call' them Shortwave Bands
because certain types of transmissions are group together within
the radio spectrum.
http://www3.damien.edu/students/mskim/shortwave.html
http://www.primetimeshortwave.com/

READ - Tuning 150 kHz to 30 MHz presented by DXing.Com
http://www.dxing.com/tuning100k.htm
"By international agreement, the radio spectrum has been divided
up among various users. While there are some exceptions, most
nations and the stations they authorize do follow the allocations
described"

Dan Grunberg's SHORTWAVE RADIO WebPages
http://groups.yahoo.com/group/Shortw...na/message/324


? Is there a way to make the antenna "look" longer or shorter
electronically so that I have a greater range of frequencies ?

Expanding the Random Wire Antenna = Three Words: Go-For-It !
http://groups.yahoo.com/group/Shortw...na/message/579

Types of Antennas - by Radio Nederlands
http://www.rnw.nl/realradio/practical/html/types.html
http://www.rnw.nl/realradio/practical/index.html

IMPROVING on the Classic simple "Random" Wire Antenna
http://groups.yahoo.com/group/Shortw...na/message/466

AMANDX - WebPages by Shawn Axelrod [VE4DX1SMA]
http://www.angelfire.com/mb/amandx/
Remember... On A Clear Day You Can Hear Forever - by Shawn Axelrod

Inverted "L' Antenna Reading List
http://groups.yahoo.com/group/Shortw...na/message/374

ANTENNA "X" (AntennaX)
http://www.antennex.com/
AntenneX" is a contraction of "Antenna Experimentation".
This site contains much (mostly ham-radio-derived) practical
information about the construction and performance of antennas.

Understanding the Random Wire Antenna . . .
And Building a Better One !
http://groups.yahoo.com/group/Shortw...na/message/200

REMEMBER: "The Shortwave Antenna is 55.5% of the . . .
Radio/Receiver and Antenna/Ground Reception Equation"
http://groups.yahoo.com/group/Shortw...na/message/288
A Shortwave Antenna is "Equally" Important for Good Reception [.]


OTHER - Shortwave Listener "SWL" Links:
http://www.rac.ca/swl.htm
http://www.101science.com/sortwavelinks.htm
http://www.anarc.org/naswa/swlguide/rsguide.html
http://www.cybercomm.net/~slapshot/speedx.html
http://www.ac6v.com/swl.htm
http://dxworld.com/swlmarks.html
http://www.angelfire.com/ok/worldofradio/
http://shortwave.hfradio.org/
http://www.faqs.org/faqs/radio/monit...shortwave-faq/


Thanks your help in advance.

Matthew
..
..
Some Say: On A Clear Day You Can See Forever.
http://groups.yahoo.com/group/Shortw...na/message/502
I BELIEVE: On A Clear Night...
You Can Hear Forever and beyond the Beyond !
..
..
iane ~ RHF
..
..

Matthew&Wendy wrote:
I have a simple scanner/shortwave receiver and have recently installed a
wire antenna. I have been able to pick up stations over 500 miles away.

OK. You should be able to hear stations thousands of miles away on
shortwave. Where are you located?

At night, listen 5800 to 6200 kHz, 7100 to 7600 kHz, 9400 to 10000 kHz.

During the day, try 11,500 to 12,100; 15,000 to 15,600; 17,500 to 18,000
kHz.

However, it seems as though the stations are grouped in very narrow bands.

They are. See above.

Is there a way to make the antenna "look" longer or shorter electronically
so that I have a greater range of frequencies?

Yes, but that's not really necessary. What Make/Model radio are you using?
Is it a small handheld or portable unit? If so a "good" antenna may very
well overload it with strong signals.

Art N2AH

OK, Sorry if I was unspecific. The antenna is about thirty feet long,
with
one leg at twenty feet. The entire antenna is twenty feet off the ground.
The Five hundered mile range is great, but it was an AM station out of
North
Carolina. The BBC broadcast on 5975 came in great too. But about 100
kilohertz on either side, and I can only pick up locals, within 200 miles.
I
saw a vertical antenna that with a switch, the operator could change
something and make the antenna resonant on different frequencies. Is this
possible with a wire antenna?




---
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.605 / Virus Database: 385 - Release Date: 3/1/2004

"Matthew&Wendy" wrote in message ...
OK, Sorry if I was unspecific. The antenna is about thirty feet long,
with
one leg at twenty feet. The entire antenna is twenty feet off the ground.
The Five hundered mile range is great, but it was an AM station out of
North
Carolina. The BBC broadcast on 5975 came in great too. But about 100
kilohertz on either side, and I can only pick up locals, within 200 miles.
I
saw a vertical antenna that with a switch, the operator could change
something and make the antenna resonant on different frequencies. Is this
possible with a wire antenna?




---
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.605 / Virus Database: 385 - Release Date: 3/1/2004


This is a farily complex subject.
For starters, go to your public library, if you are lucky they will
have a copy of the ARRL Ham Radio Handbook, if not then they should
have some refference book for ham radio. Look up antennas.
To make a vertical antenne resonate on differing frequencies requires
added indcuctance (a ctapped coil) or capacitors. To cover from say 2
through 10Mhz
is a pretty complex task.
Good luck.
Terry