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DX Paging!
You can now have important DX spots be emailed to your home address, cell phone, PDA, etc. Using the DX Alert function of Desktop you can watch for that special call and be notified on your cell phone or any other email address. If not already, register for this fun feature.
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Welcome to Sparkgap.net. We have good news and bad. While we are in
the process of constructing this stie, we have run into problems
between Netscape / Firefox / Mozilla and Internet Explore. So far, IE
has won. If you run Mozilla, then we are working hard to clear up the
problem.
Rich/WD5B
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Today is Thursday October 16, 2008 [GMT]
Proposed National SOS Radio Network
The National SOS Radio Network is based on the millions of Family Radio Service (FRS) radios already in use for camping, boating, hiking, etc., and the nationwide network of 650,000 ham radio operators -- people renown & prepared for emergency communications. The result: Instant, reliable crisis communications.
<more>
Sounds of Sparkgap
In its simplest form a spark transmitter consists of a spark gap connected across an oscillatory circuit consisting of a capacitor and an inductor in series. The capacitor C (see Fig 1a) is charged to a high voltage by an induction coil (not shown). When the potential across it was sufficiently high to break down the insulation of air in the gap, a spark then passed... The condenser then discharged through the conducting spark, and the discharge took the form of a damped oscillation, at a frequency determined by the resonant frequency of the spark transmitter.
<more>
Loomis knew
radio before Marconi?
D
olbear was also late on the scene, for, as early as August 15, 1858,
an American dentist name Mahlon Loomis was beginning a series of
experiments in wireless telegraphy within the state of Ohio! With the
interruption of the American Civil War, Loomis continued his work. In
October of 1866 he sent signals between two mountaintops, about 15 miles
apart, in the Blue Ridge Mountains. Senator Samuel Pomeroy of Kansas and
Representative John Bingham of Ohio were present at this demonstration.
Both men later gave much support on Loomis' behalf in the U.S. Congress.
<more>
English HF Broadcast Schedules
This database of English Language Shortwave Broadcast schedules for the current broadcasting season is arranged by continent and by country. All of these stations' schedules are translated into UTC, which is the international standard time zone -- check out the FAQs if you don't know how to figure out what time something is on! See our Articles section.
Click on SWBC above.
Remember the HF RTTY MBO systems before packet, error correction and all. If you have any info or experience on this system especially operations and software, please email us.
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Sparkgap DX Search
| TIME |
Call |
Freq |
Spot |
Comments |
| 0736 |
RU9UC |
14018.0 |
RU0BW |
rda:KE-1 |
| 0735 |
VK9DWX |
10138.0 |
JE6QUJ-7 |
now up 3 |
| 0734 |
KI4WDZ |
3827.0 |
KI4WDZ |
test |
| 0734 |
VK9DWX |
14030.0 |
EA5NZ |
599 |
| 0733 |
US8IPB |
29450.0 |
F6EWB |
IN93HH |
| 0734 |
VK3OM |
14191.6 |
ON8WW |
Thx Ian |
| 0734 |
IZ6CLN/P |
7062.0 |
IW2NXI |
DCI AP 0 |
| 0733 |
UA9CS |
29450.0 |
F6EWB |
IN93HH |
| 0733 |
RV9UCN |
14142.5 |
RU0BW |
rda;KE-1 |
| 0733 |
VK9DWX |
21290.0 |
IV3AZZ |
short pa |
| 0733 |
9L1X |
14025.0 |
RA9YN |
UP2 NOT |
| 0732 |
VK9DWX |
21290.0 |
EA3EYD |
long or |
| 0731 |
SC3DX |
10128.0 |
SP6KFK |
up up .1 |
| 0730 |
VK9DWX |
21289.9 |
IK7BPV |
OC-07 Mg |
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Monitor spots.
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October 2008
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November 2008
Su Mo Tu We Th Fr Sa
1
2 3 4 5 6 7 8
9 10 11 12 13 14 15
16 17 18 19 20 21 22
23 24 25 26 27 28 29
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Search by UALR\n
or Buckmaster
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Tornado!
Remember how to watch a tornado?
Tornados create an electrical disturbance somewhere in the 55 megahertz range, close to the frequency band assigned to channel 2.
Tune to channel 13 and turn the brightness control down tothe point where the image is nearly--not completely--black. Then turn to channel 2. Lightning will register as horizontal streaks on the screen. When the picture becomes bright enough to be seen, or when the screen glows with an even light, there's a tornado within 20 miles, and it's time to find Toto and head for the basement.
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Sparkgap.net is a project of WD5B and is for the purpose of promoting amateur radio and shortwave listening. Suggestions and comments are welcome as well as contibutions of interesting materials or web sites to visit.
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