How To Find Ten Meter Activity
Have you given up on the ten meter band?
Although it's true that you can often scan the entire band
and not hear a single station, the band is far from dead.
The secret is
knowing when to listen and what to listen for!
Determining if the band is open:
There are three easy ways to identify if the band
should be open
First tune into WWV, this
radio station broadcasts on 2.5, 5, 10, 15, and
20 MHz. Start by checking 20
MHz and see if WWV is giving you a good strong
signal. If it is, 10 meters
may indeed be open, If you can't hear it, it's
likely 10 will be dead. Also
be sure to listen for the solar "Numbers" on
WWV at 18 minutes past each
hour or 45 minutes past for WWVH in Hawaii
(WWVH is not on 20 MHz). If the
Solar Flux is reported above 90 and the A
index is under 5, start calling CQ
DX on ten meters! The higher the flux
and the lower the A index, the more DX
you'll be working.
Next, there are the numerous beacon
stations operating at the high end
of the 10 meter cw band, just below 28.3
MHz. The beacon stations can be
identified by the suffix added to the call,
"/B" and "/BCN" are commonly
used. It's amazing how many times these low
power stations are solid copy
into my station when there isn't a soul to be
found on the band!
Don't give up though if you can't find any beacons, the
opposite can
also be true, you might not hear a single beacon on the air,
yet there
may be an opening to an area where there is no beacon.
Here is a list of just a few of the beacons to listen for when the band
seems to be dead.
28.225 KW7Y/b CAMANO ISLAND, WA 4 watts
28.244 WA6APQ/bcn
LONG BEACH, CA
28.280 NO6J Thousand Oaks, Ca
28.259 KA1NSV/bcn Cape Cod
Lastly, the band itself can tell you if an
opening is in progress.
Often when the band is opening or closing, blips,
beeps and pops can be
heard flashing across the band. It has a sort of
machine gun sound to it.
Once the opening is in full swing, the noises will
cease.
What type of propagation should you be
listening for:
Aurora: If you live in one of the northern states,
can cash in on this
one. Whenever WWV reports a K value above 3, turn your
beam north for lots
of fun. Don't worry if the voices sound like they're
under water, this is
normal.
Satellites: Start asking
around about 10 meter satellite activity. If you
can't find anyone with
information, just start camping out on 29.408 MHz.
Sooner or later you'll
hear the RS-12 satellite cw beacon. Then tune
29.410 through 29.450. The
band goes crazy every day!
Meteorite Scatter: Again, ask
local hams if they ever played around with
this mode. If nothing turns up,
check the local papers for reports on
the various annual meteorite showers
and the dates. Listen during the
peak of the shower. Signals will appear,
peak and then drop off quickly.
Sporadic E: This type of
propagation can occur at any time so you really
just have to be there at the
right time if you are going to catch it. When the
activity extends up to the
6 and even the 2 meter bands, tune in to 28.885,
stations gather there to
report openings. The peak months for
sporadic E seem to be mid-summer and
mid-winter. Northern states
should point their beams south-west or west. The
propagation often
oscillates back and forth between the two directions.
Southern states
point north or north-east.
Ground
Wave: After dark, and especially on evenings when even the
Sporadic
E is not running, check out the band for ground wave signals.
The best time
for contacts is between 8 and 10 pm local time. Local
groups congregate
across the band each evening and many clubs have weekly
meetings on some
preset frequency. Sunday evening seems to be a popular
meeting night. The
best frequency I have found to date is 28.400.
It seems, if there is any
activity out there at all, tuning to 400 will
find it. Also, don't forget
29.0 for AM activity and 29.6 for FM simplex.
If you have a good location or
a decent gain antenna, contacts
a hundred miles away can be made regularly.
(This would actually be line-
of-sight communications, since
"TRUE" ground wave on ten meters would only
exist to about 15
miles or so.) To encourage ground wave activity, one
local ham club in my
area sponsors a yearly GROUND WAVE CONTEST.
Notification is send out to the
various clubs and hams in neighboring
cities and states. Consider this at
your next club meeting.
Propagation begins at home:
If
all of these modes have been tried and you are still not finding any
activity, the problem could be with your antenna. If at all possible put
up an antenna with gain. If you haven't already heard this, you will,
"You can't work 'em if you can't hear 'em!" It doesn't have to be 6
elements on a 36 foot boom either! A 14 foot boom with 3 elements can
give you around 7 Db gain over a dipole. You will be amazed at how much
better you will be hearing stations. What you had always thought was a
dead band, will actually be hopping with activity.
Okay, let's say
you just don't have the room put up a beam of any sort. Try a
5/8 wave
vertical. You still get 3 dB gain over a 1/4 ground plane. Gain
is gain,
however you get it!
Even half wave dipoles and half wave verticals
mounted close to the
ground (15-25 feet above ground) can be the perfect
antennas... if the
conditions are right. Sporadic E on 10 meters provides
those conditions.
These antennas have a high angle of radiation and let me
tell you, I've
worked hundreds of stations when the Sporadic E comes in and
some of the
strongest stations are those running these types of antennas.
Now that you know some of the many secrets of the ten meter band, you'd
better
buy an extra log book or two, because you're going to need it to
track all
the additional contacts you're going to make soon. See you on 10!