221 lines
12 KiB
Plaintext
221 lines
12 KiB
Plaintext
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MODE AND LICENSE CLASS ALLOCATIONS
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FOR 10 METERS
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SOURCE: 73 Amateur Radio
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Reprinted By: John Johnson, KWV8BP
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Map Description
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28.0_____ ___
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|+| <--- 28.040 ........ QRP CW Calling (Pri) |
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|+| <--- 28.060 ........ QRP CW Calling Freq. |
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_ |+|__ |---- 28.090 - 28.100 RTTY/AMTOR (all modes) |
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|+|o| <--- 28.105 ........ Packet 300 baud | Novice
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|+|o| |
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|+|o| |---- 28.190 - 28.200 New Beacons | Technician
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|+|o| |<--- 28.195 .........IY4M Robot/Beacon | ___
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_ |+|o| | <--- 28.205 .........Packet 1200 Baud (N700-10| |o| CW,
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Digit
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|+|o| |----- 28.200 - 28.300 Beacons | |o|
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_ |_|_| | | ---
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|x|^| | | ___
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|x|^| |<--- 28.400 .........Low Power/Mobile Calling | |^| CW, SSB
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|x|^| | | |^|
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____ |x|_| |---- 28.300 - 28.675 SSB Activity |___---
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28.5 |x| | |
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|x| | |
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_ |x| |<--- 28.600 .........Traditional SSB Calling |
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|x| | | ___
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|x| | | |+| CW,
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Digit
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_ |x| |------28.675 - 28.685 SSTV | |+|
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|x| | | ---
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|x| | |
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_ |x| |<--- 28.800..........Daily 10/10 Net 1800 UTC | ___
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|x| | | |x| CW,
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Digit
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|x| |---- 28.675 - 28.990 Light SSB Activity | |x| SSTV,
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SSB
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|x| | | ---
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|x| |<--- 28.888..........Continuous Code Practice |
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_ |x| | | ___
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|x| | | |*| CW,
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Digit
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|x| |<--- 28.945..........FAX | |*| SSTV,
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SSB
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____|_| |<--- 29.000..........AM Calling | --- FM
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29.0 |*| | |
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_|*| |-----29.000 - 29.200 AM Activity | General,
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|*| | |
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_|*| | |
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|*| |----29.200 - 29.300 FM Simplex | Advanced,
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|*| | |
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_|*| |<---29.300...........Far East FM Calling |
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|*| | | Extra
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|*| |<----29.358...........R.S.10 Beacon/Telemetry |
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|*| | | Class
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_|*| |-----29.300 - 29.500 Satellite Downlinks |
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|*| | | License
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___|*| | |
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29.5 |*| | |
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|*| |----29.52,54,56,58 FM Repeater Inputs |
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|*| | |
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_|*| <---29.600...........FM Calling |
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|*| | |
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|*| |----29.62,64,66,68 FM Repeater Outputs |
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___|_| |
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29.7 |_____
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10 METER SURVIVAL GUIDE
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-------------------------
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73 Amateur Radio July 1989
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If you think 10 meters is just another ham band, you're in for quite a
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surprise. After a long period of poor propagation and relative neglect, this
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band has come alive with a vengeance. The combined forces of Novice
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Enhancement, new transmission modes, a flood of equipment, and what may be
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the best solar cycle yet, are beating on the door of ham radio. Are you
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ready?
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The FCC rules and regulations give us the official word on band use. But
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there's more to the story. By general agreement, and some prodding by various
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organizations, the band has been divided into a maze of allocations and sub
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bands. See above illustration. Knowing and following these voluntary
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assignments can make you a more efficient and courteous operator. More than
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that, knowing what's there and where to find it, can only add to your
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enjoyment.
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Before you call CQ, find out which parts of the world are open to your QTH by
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scanning the area from 28.190 to 28.300 MHZ. The propagation beacons found
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there will frequently surprise you. Check your Callbook or page 103 of the
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Jan 88 73 for a list of 10 meter beacons. One beacon of particular interest
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is the IY4M robot on 28.195 Mhz. Try giving it a call sometime.
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In the future expect an integrated beacon system to begin operating in a
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round robin fashion near 28.200 Mhz. A similar system has been in operation
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for some time on 14.100 Mhz.
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These beacons generally run with very low power (some less than a Watt!) and
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you can often hear them when the rest of the band sounds dead. Perhaps this
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should be a lessen to those who question CW's ability to get through during
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marginal band conditions!
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Having been inspired by low-power beacons, you should go QRP and tune around
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the 28.040 or 28.060 Mhz calling frequencies for low power operations. Be
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warned, though: Some of these guys consider real QRP to be anything under 100
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mW!
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By comparison, a Novice or Technician can be a real powerhouse on 10 CW with
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ample opportunity for exciting DX. Just take note of the two popular packet
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frequencies in this area.
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Most packet activity on 10 meters is centered around two frequencies. Check
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28.205 Mhz for 1200 baud. One important note, FM packet is not allowed on the
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10 meter band below 29.2 Mhz.
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RTTY and AMTOR enthusiasts should look at the region of 28.090 to 28.100 Mhz.
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Depending on your point of view, Novice Enhancement is either something
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unmentionable or a real boon for the hobby. Whatever you think, a quick scan
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across the Novice/Technician SSB portion of the band when 10 meter is open is
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a real eye-opener. An influx of economical new radios and a wave of the FCC's
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hand, have moved the bulk of the SSB activity down below 28.500 Mhz. Low
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power mobiles and stations with very modest antennas can easily pick up QSOs
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in this region.
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While there isn't a real standard yet, 28.400 Mhz is a good gathering place
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for mobiles to pick up QSOs. If the frequency starts getting busy, move your
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contacts down away from this calling frequency.
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If you think it takes a full "gallon and a half" to bust into a DX pileup,
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you should try again. On 10 meters, any station can catch a rare one by using
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courtesy and persistence, even low power mobiles! Listen to what's happening
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and try to figure out what catches the DX station's ears.
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The middle of the General phone band is home to some big time rag-chewing-try
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calling around 28.600 Mhz. Look for SSTV activity between 28.675 and 28.685
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Mhz, or on 28.945, if you're into FAX. Another interesting feature is the
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continuous code practice transmission at 28.888 Mhz which comes from W6IRT's
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QTH (N. Hollywood, CA) running only 5 watts into a ground plane antenna.
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AM operation has a frontier outpost between 29.000 and 29.200 Mhz, with
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29.000 being a common calling frequency. Many modern radios are equipped with
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this mode, including the popular Uniden HR-2510. With this kind of backing,
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10 AM should see a significant increase in popularity.
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To the newcomer, both rugby and 10 FM seem uncivilized with few survivors.
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Well, maybe that's true about rugby, but 10 FM can have a more dignified
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manner. Occasionally referred to as the Channel 19 of amateur radio, the FM
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calling frequency of 29.600 Mhz has earned its reputation. As you listen in,
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you might be surprised by the "no holds barred" activity.
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Part of the problem is proliferation of "links," secondary transceivers
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connected to VHF and UHF repeater systems. Some of these operate exclusively
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on this channel. Rarely out of control, but sometimes innocently left on,
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they faithfully retransmit the activity of their parent repeater. Users of
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these links should take extra caution to ensure their proper operation, and
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configure them without courtesy tones or hang time. A properly operated link
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can be exciting for repeater users. Link owners should add to that excitement
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with at least one more frequency to which they can QSY.
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With such heavy congestion on the calling frequency, stations need to move
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off quickly and continue their QSO elsewhere. The best place to QSY is 29.200
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to 29.300 Mhz, where you can also find a common DX calling frequency. The
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reason for going so far down the band is to avoid interference with repeater
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inputs and outputs and satellite downlinks. Keep in mind that a 10 meter FM
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signal is about 10 Khz wide. FM signals can easily interfere with an FM
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receiver 10 Khz away, or totally obliterate a CW or SSB signal 5 to 8 Khz
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away. 10 meter FM operation is quite channelized--stick to the even numbered
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10 Khz channels (i.e., 29.220, 29.240...)to avoid problems.
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Repeater operation on 10 meters is nothing like its VHF or UHF counterpart.
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Frequent propagation over large areas, and only four available repeater pairs
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, often result in many repeaters being heard on the same frequency. Use your
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best judgment to avoid keying up repeaters which may interfere with ongoing
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QSOs. I think in the future we will see some solutions, perhaps PL. In the
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meantime, keep up with 10 meter repeater activity by joining the Ann Arbor 10
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meter Repeater Net on 29.54/64, Monday evenings at 0000 UTC.
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Downlinks located between 28.300 and 28.500 Mhz are paired with uplinks on
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other bands. Since satellite operators are'nt transmitting on 10 meters, they
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often can't tell you that your're interfering with them. Even though RS-10/11
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seems to be all that's active at this time, more satellites are expected to
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use 10 meters. Listen around 29.358 Mhz for the RS beacon and telemetry. When
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you hear it, tune up toward 28.400 Mhz for the downlink passband.
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Ten meters is frequented by a number of contests and regular nets. The
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familiar sound of "CQ TEN TEN" is the result of Ten-Ten International, which
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currently conducts a daily net on 28.800 Mhz at 1800 UTC. They sponsor
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numerous awards and in the process have helped keep the 10 meter band active
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during long periods of poor propagation. Ten-Ten International boasts nearly
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50,000 members.
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It's easy to see why 10 meters is rapidly becoming a showplace for amateur
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radio. Solar Cycle 22 is providing 10 meter openings to all parts of the
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world, inspiring new hams and old-timers alike. Novice Enhancement,
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inexpensive radios, relatively small antennas, excellent propagation, and a
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wide range of active modes, provide the excitement. Courteous operation and
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understanding of the voluntary band plan make it work. Now that you know
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where the action is, enjoy it!
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For more information, Contact...
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Satellite Operation
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AMSAT N.A. Po Box 27 Washington DC 200044
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Packet
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TAPR Po Box 22888 Tucson AZ 85743-2888
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VADCG
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9531 Odlin Rd. Richmond, BC V6X-1E1 Canada
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AM
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AM Press Exchange 2116 Old Dover Dr. Woodlawn TN 37191
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Ten-Ten International
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18130 Bromley St. Tarzana CA 91356
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This file was brought to you by The Hotline BBS, give us a call, we have an
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entire section dedicated to Scanner & Radio related topics..
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The Hotline BBS 304-736-9169 or 304-743-7909
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