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HF propagation forecast from G4ILO.com

HF Propagation

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Solar flux: "sho decreasing
A Index: decreasing
K Index: name="Generator" content="Drupal 7 increasing
Sunspots: 84
Forecast: Disturbed
Conditions
< 10MHz: Excellent
10-20MHz: Good
20-30MHz: Good

Solar data from WWV.
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LINKS REFFERING TO CONSTRUCTION SITES 

RECEIVERS 

http://www.io.com/~nielw/3tubrcvr/3tubrcvr.htm
http://www.hvra.org/articles.htm
http://www.jogis-roehrenbude.de/
http://www.w8ji.com/receiving_basics.htm
http://www.mines.uidaho.edu/~glowbugs/regens.htm
http://vintageradio.me.uk/radconnav/valvetrf/
http://www.qsl.net/vu2upx/Projects/hfrx_mc3362.htm

CRYSTAL RECEIVERS 

http://www.crystalradio.net/
http://www.oldradioworld.de/gollum/
 

QRP

http://www.geocities.com/pa2ohh/index.html
http://www.qrp4u.de/index_en.html
http://faculty.frostburg.edu/phys/latta/ee/6cl6xmtr/6cl6schematic.html
http://www.io.com/~n5fc/2n2222.htm
http://www.njqrp.org/
http://www.qsl.net/g4fon/

TUBES 

http://www.kbapps.com/tubemanual.html
http://www.wps.com/archives/tube-datasheets/
 

BOOKS 

http://www.dspguide.com/pdfbook.htm
 

ANTENNAS 

http://home.comcast.net/~buck0/ll5coolj.html
http://antennas.ee.duth.gr/
http://ac6v.com/antprojects.htm#2M
http://www.qsl.net/sv5byr/tmatch.htm
http://www.cebik.com/radio.html
http://www.ifwtech.co.uk/g3sek/diy-yagi/index.htm
http://www.antennex.com
http://members.fortunecity.com/xe1bef/hf-antennas.htm
 

ANTENNA SIMULATION

http://mmhamsoft.amateur-radio.ca/
  

L.F. CONSTRUCTIONS 

http://www4.tpgi.com.au/users/ldbutler/ActiveLoopConverter.htm
http://www.cp.duluth.mn.us/~ki0le/pages/lfconv.htm
  

HOMEMADE 

http://www.ac6v.com/homebrew.htm
http://w1.859.telia.com/~u85920178/
http://www.geocities.co.jp/Technopolis-Mars/1750/EnglishVersion.html
http://www.qsl.net/7n3wvm/
http://www.qsl.net/vu2msy/homebrew/homebrewing_zone.htm
http://www.seboldt.net/k0jd/
http://www.qsl.net/n6ev/Glowbug.html
http://www4.tpgi.com.au/users/ldbutler/
http://www.qsl.net/vk3jeg/
http://www.cqham.ru/projects/hamradio_projects.htm
http://www.k3pgp.org/
http://my.integritynet.com.au/purdic/
http://members.fortunecity.com/xe1bef/projects.htm
http://www.qsl.net/sv1bsx/ 

ELECTRONIC CIRCUITS

http://www.datasheetarchive.com 
http://www.keelynet.com/sources/schema1.htm
http://www.hlektronika.gr

VFO STABILIZER

http://www.hanssummers.com/radio/huffpuff/index.htm

PIC PROGRAMMING

http://www.amqrp.org/elmer160/lessons/index.html  
 

CIRCUIT SIMULATION , PSPICE

http://www.orcadpcb.com/pspice/models.asp?bc=F
http://bwrc.eecs.berkeley.edu/classes/icbook/spice/UserGuide/elements_fr.html
http://encon.fke.utm.my/nikd/pspiceclub/pspice_club.htm 
 

STUDENT VERSION OF PSPICE (FREE):

http://www.electronics-lab.com/downloads/schematic/013/ 
 

CW TRAINING

http://www.qsl.net/g4fon/ 

RADIO THEORY 

http://www.filter-solutions.com 
 

ENCYCLOPEDIA 

http://www.rfcafe.com/ 
 

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