Gateway Chapter 10-10 International
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Gateway Chapter 1-1 International

Gateway Chapter Officers

The Gateway Chapter

Who We Are

Ten-Ten International Net, or 10-10 for short, is an organization of amateur radio operators dedicated to maintaining high levels of amateur radio communications on the 10 meter amateur band (28.0-29.7 MHz). Established in 1962, 10-10 has grown continuously since that day, with some ups and downs according to the numbers of sunspots and the openness of the band. As you read this, the number of 10-10 numbers issued to members now exceeds 77,000. 10-10 would welcome your membership in the organization if you have an amateur radio license with 10 meter privileges.

The Gateway Chapter Membership is primarily from the greater St. Louis, MO metroplex. Our Chapter was formed in 1972 by Don Wirth, WB0ECM #3218, and we are very proud of the number of nearly consecutive Net Sessions (Currently 2322 - every Wednesday for over 44 years!). We missed only once due to very severe weather and a widespread power outage. The Chapter meets every Wednesday evening (local Time) on 28.650 MHz (+/- QRM) at 2000 Local Time (Thursday (UTC), 0100Z Summers and 0200Z Winters). We conduct informal, "open" nets and all amateur radio operators are cordially invited to attend for the purpose of exchanging ten-ten numbers and for general rag chewing.

How To Join The Gateway Chapter

Membership in the Gateway Chapter is available to any ham who has a 10-10 number and who resides within ground wave range of the St. Louis area. We also offer a certificate (but not Gateway membership) to other 10-10 members who contact and exchange 10-10 data (10-10#, Call Sign, Operator's Name, Contact Date, City and State/Country) with five (5) Gateway members.
The cost is only $1.00 for a lifetime membership! Send your contact information along with one dollar (non-recurring) to our Certificate Manager, Henry Schaper, KA0AWS, 241 Tapestry Dr., St. Louis, MO 63129 and Henry will send you a handsome non-propagating Gateway Chapter Certificate suitable for framing. A rare bargain indeed!

How To Join 10-10 International

Any licensed amateur authorized to operate on the 10 meter band can join 10-10. It is required that you contact ten 10-10 members (on 10 meters), listing their information as noted on the Membership Application form (10-10#, Call Sign, Operator's Name, Contact Date, City and State/Country). US amateurs send their completed Membership Application and required dues payment to the Data Manager, 10-10 International Net, Inc., P.O. Box 2467, Abingdon, VA 24212-2467. DX amateurs should send the application to the DX Call Area Manager, Carol Hugentober, K8DHK, #29588, 4441 Andreas Avenue, Cincinnati, OH 45211-2622, U.S.A. DX amateurs: Please remember that dues must be paid in US dollars and by International Postal Money Order only. The Data Manager will assign you a 10-10 number and send it to you along wi712th your new member package.

10 METER Suggested Operating Frequencies.
28.025 CW Rare DX & DXpeditions Frequently Operate Here Split
28.060 QRP CW Calling frequency
28.080 RTTY Rare DX & DXpeditions Frequently Operate Here -- Split
28.080 to 28.100 Primary Range for RTTY
28.1010 10-10 Intl CW Calling Frequency
28.110 QRP Novice/Tech Calling FREQ
28.120 PSK-31
28.190-28.225 Beacons
>>28.200<< NCDXF/IARU beacons (<> STAY OFF OF THIS FREQUENCY) Many Hams rely on these beacons for propagation determination. For Details - see NCDXF/IARU International Beacon Network
28.380 10-10 SSB Intl Calling Frequency
28.385 QRP SSB Calling frequency
28.400 10-10 SSB Int'l. Calling Frequency Another is 28.425
28.425 10-10 SSB Intl Calling Frequency Another is 28.400
28.495 SSB Rare DX & DXpeditions Frequently Operate Here -- Split
28.600 Old General Calling Frequency - Still used by Old Timers
28.675-28.685 SSTV Operating Frequency -- IARU Region 1
28.680 SSTV Operations USA/Canada
28.825 10-10 Backscatter Net - Paper Chasers Net
28.885 6M DX Liaison Frequency -- Listen here for 6 Meter DX opening announcements and discussions.
28.945 FAX Operating Frequency
29.000-29.200 AM Operations
29.300-29.510 Satellite Downlinks
29.520-29.580 Repeater Inputs
29.600 FM Simplex - Calling Frequency
29.620-29.680 Repeater Outputs

10-10 Contests

Each year, 10-10 sponsors (2) CW contests, (2) Digital Contests and (2) phone contests to encourage maximum cordial activity on the 10 meter band. In addition, there is a 10-10 Day 24-hour Sprint. Plus there are two year long contests. A 10-10 QSO Party brochure is available from the Information Manager or the Contest Manager. A summary of pertinent information for the 2016 contests is posted below:

2017 10-10 Contest & Event Dates

10-10 Anniversary 10 October 2017
10-10 Meet The Volunteers 01 January 2018

Please note that during 10-10 contest periods, 10-10 members are requested to have the courtesy to observe a "quiet zone" between the frequencies of 28.490 and 28.510 MHz for non-contesters to use. All regular 10-10 contests begin at 0001 UTC on the first listed date and close at 2400 UTC on the second listed date. The 10-10 Day Sprint is, of course, a 1-day contest. NOTE THIS UPDATE: Please send your 10-10 Contest Logs to Dan Morris, KZ3T #41015, 3162 Covington Way, Lenoir, NC 28645.

Upcoming Contests of Local Interest

March 2017

CLARA Chatter Party 1700Z, Mar 21 to 1700Z, Mar 22 and 1700Z, Mar 25 to 1700Z, Mar 26
SKCC Sprint 0000Z-0200Z, Mar 22
QRP Fox Hunt 0100Z-0230Z, Mar 22
Phone Fray 0230Z-0300Z, Mar 22
CWops Mini-CWT Test 1300Z-1400Z, Mar 22 and 1900Z-2000Z, Mar 22 and 0300Z-0400Z, Mar 23
RSGB 80m Club Championship, SSB 2000Z-2130Z, Mar 23
QRP Fox Hunt 0100Z-0230Z, Mar 24
NCCC RTTY Sprint 0145Z-0215Z, Mar 24
NCCC Sprint 0230Z-0300Z, Mar 24
FOC QSO Party 0000Z-2359Z, Mar 25
CQ WW WPX Contest, SSB 0000Z, Mar 25 to 2359Z, Mar 26
UBA Spring Contest, 6m 0600Z-1000Z, Mar 26
QRP Fox Hunt 0100Z-0230Z, Mar 29
Phone Fray 0230Z-0300Z, Mar 29
CWops Mini-CWT Test 1300Z-1400Z, Mar 29 and 1900Z-2000Z, Mar 29 and 0300Z-0400Z, Mar 30
UKEICC 80m Contest 2000Z-2100Z, Mar 29
QRP Fox Hunt 0100Z-0230Z, Mar 31
NCCC RTTY Sprint 0145Z-0215Z, Mar 31
NCCC Sprint 0230Z-0300Z, Mar 31

April 2017

15-Meter SSTV Dash Contest 0000Z, Apr 1 to 2359Z, Apr 2
LZ Open 40m Sprint Contest 0400Z-0800Z, Apr 1
Missouri QSO Party 1400Z, Apr 1 to 0400Z, Apr 2 and 1400Z-2000Z, Apr 2
Mississippi QSO Party 1400Z, Apr 1 to 0200Z, Apr 2
SP DX Contest 1500Z, Apr 1 to 1500Z, Apr 2
EA RTTY Contest 1600Z, Apr 1 to 1600Z, Apr 2
North American SSB Sprint Contest 0000Z-0400Z, Apr 2
RSGB RoLo SSB 1900Z-2030Z, Apr 2
RSGB 80m Club Championship, CW 1900Z-2030Z, Apr 3
ARS Spartan Sprint 0100Z-0300Z, Apr 4
Phone Fray 0230Z-0300Z, Apr 5
CWops Mini-CWT Test 1300Z-1400Z, Apr 5 and 1900Z-2000Z, Apr 5 and 0300Z-0400Z, Apr 6
UKEICC 80m Contest 2000Z-2100Z, Apr 5
NRAU 10m Activity Contest 1700Z-1800Z, Apr 6 (CW) and 1800Z-1900Z, Apr 6 (SSB) and 1900Z-2000Z, Apr 6 (FM) and 2000Z-2100Z, Apr 6 (Dig)
SARL 80m QSO Party 1700Z-2000Z, Apr 6
NCCC RTTY Sprint 0145Z-0215Z, Apr 7
NCCC Sprint 0230Z-0300Z, Apr 7
JIDX CW Contest 0700Z, Apr 8 to 1300Z, Apr 9
PODXS 070 Club PSK 31 Flavors Contest 1000Z, Apr 8 to 0400Z, Apr 9
QRP ARCI Spring QSO Party 1200Z, Apr 9 to 2359Z, Apr 10
OK/OM DX Contest, SSB 1200Z, Apr 8 to 1200Z, Apr 9
SKCC Weekend Sprintathon 1200Z, Apr 8 to 2400Z, Apr 9
Texas State Parks on the Air 1400Z, Apr 8 to 0200Z, Apr 9 and 1400Z-2000Z, Apr 9
New Mexico QSO Party 1400Z, Apr 8 to 0200Z, Apr 9
Georgia QSO Party 1800Z, Apr 8 to 0359Z, Apr 9 and 1400Z-2359Z, Apr 9
Yuri Gagarin International DX Contest 2100Z, Apr 8 to 2100Z, Apr 9
International Vintage Contest HF 1300Z-1900Z, Apr 9
Hungarian Straight Key Contest 1500Z-1700Z, Apr 9
NAQCC CW Sprint 0030Z-0230Z, Apr 12
Phone Fray 0230Z-0300Z, Apr 12
CWops Mini-CWT Test 1300Z-1400Z, Apr 12 and 1900Z-2000Z, Apr 12 and 0300Z-0400Z, Apr 13
RSGB 80m Club Championship, SSB 1900Z-2030Z, Mar 23
NCCC RTTY Sprint 0145Z-0215Z, Apr 14
NCCC Sprint 0230Z-0300Z, Apr 14
Holyland DX Contest 2100Z, Apr 14 to 2100Z, Apr 15
ES Open HF Championship 0500Z-0559Z, Apr 15 and 0600Z-0659Z, Apr 15 and 0700Z-0759Z, Apr 15 and 0800Z-0859Z, Apr 15
Worked All Provinces of China DX Contest 0600Z, Apr 15 to 0559Z, Apr 16
YU DX Contest 1200Z, Apr 15 to 1159Z, Apr 16
CQ Manchester Mineira DX Contest 1200Z, Apr 15 to 2359Z, Apr 16
Michigan QSO Party 1600Z, Apr 15 to 0400Z, Apr 16
EA-QRP CW Contest 1700Z-2000Z, Apr 15 (10-20m) and 2000Z-2300Z, Apr 15 (40-80m) and 0700Z-0900Z, Apr 16 (40m) and 0900Z-1200Z, Apr 16 (20-10m)
Ontario QSO Party 1800Z, Apr 15 to 0500Z, Apr 16 and 1200Z-1800Z, Apr 16
North Dakota QSO Party 1800Z, Apr 15 to 1800Z, Apr 16
Feld Hell Sprint 1800Z-2159Z, Apr 15
WAB 3.5/7/14 MHz Data Modes 1200Z-1400Z, Apr 16 (RTTY) and 1400Z-1600Z, Apr 16 (PSK) and 1800Z-2000Z, Apr 16 (RTTY) and 2000Z-2200Z, Apr 16 (PSK)
ARRL Rookie Roundup, SSB 1800Z-2359Z, Apr 16
Run for the Bacon QRP Contest 0200Z-0400Z, Apr 17
Low Power Spring Sprint 1400Z-2000Z, Apr 17
144 MHz Spring Sprint 1900 local - 2300 local, Apr 17
Phone Fray 0230Z-0300Z, Apr 19
CWops Mini-CWT Test 1300Z-1400Z, Apr 19 and 1900Z-2000Z, Apr 19 and 0300Z-0400Z, Apr 20
NCCC RTTY Sprint 0145Z-0215Z, Apr 21
NCCC Sprint 0230Z-0300Z, Apr 21
QRP to the Field 0800-1800 local, Apr 22
UK/EI DX Contest, CW 1200Z, Apr 22 to 1200Z, Apr 23
SP DX RTTY Contest 1200Z, Apr 22 to 1200Z, Apr 23
Nebraska QSO Party 1300Z, Apr 22 to 0100Z, Apr 23 and 1300Z-2200Z, Apr 23
BARTG Sprint 75 1700Z-2059Z, Apr 24
222 MHz Spring Sprint 1900 local - 2300 local, Apr 25
SKCC Sprint 0000Z-0200Z, Apr 26
Phone Fray 0230Z-0300Z, Apr 26
CWops Mini-CWT Test 1300Z-1400Z, Apr 26 and 1900Z-2000Z, Apr 26 and 0300Z-0400Z, Apr 27
UKEICC 80m Contest 2000Z-2100Z, Apr 26
RSGB 80m Club Championship, Data 1900Z-2030Z, Apr 27
NCCC RTTY Sprint 0145Z-0215Z, Apr 28
NCCC Sprint 0230Z-0300Z, Apr 28
Feld Hell Sprint 0000Z-2359Z, Apr 29
10-10 Int. Spring Contest, Digital 0001Z, Apr 29 to 2359Z, Apr 30
Helvetia Contest 1300Z, Apr 29 to 1259Z, Apr 30
Florida QSO Party 1600Z, Apr 29 to 0159Z, Apr 30 and 1200Z-2159Z, Apr 30

[Exchanges, Scoring and other details are available at the ARRL or WA7BNM Contest sites. (See Favorite Links below.)]

Upcoming Midwest Area Eyeballs, Swapfests and Hamfests

25 March 2017 - Ozarks Amateur Radio Society's Springtime Hamfest, Mount Vernon Arts and Recreation Center MARC, 822 W. Mount Vernon Road, Mount Vernion, MO. Talk-in 146.97- (PL 162.2).
07-08 April 2017 - Ozark.con QRP Conference, Stone Castle Hotel, 3050 Green Mountain Drive, Branson, MO (Rooms for $69.00?), 2 days of exciting QRP activities.
22 April 2017 - Lewis & Clark Radio Club Hamfest, River Bend Arena, Lewis & Clark College, Godfrey, IL. 7AM-Noon. Talk-in 145.230-(PL 79.7)
07 June 2017 - Egyptianfest, Egyptian Radio Club, Holy Family Comm. Center, 2600 Washington, Granite City, IL. 7AM-2PM. Talk-in 146.76-((PL 141.3) 15 July 2017- WAARCI Hamfest, Warrensburg, MO. For more information access
17 July 2017 - Annual Zerobeaters Hamfest, Zerobeaters Amateur Radio Club, Elks Lodge, 1459 W. 5th Street, Washington, MO, 8AM - 1PM. Talk-in 147.24+ 28 October 2017 - Halloween Hamfest, Kirkwood Recreational Center, Kirkwood, MO. For more information access

Websites referenced above provide additional details about these popular Hamfests and Swapmeets. Information about additional upcoming events in the region will be listed in this category as it becomes available. If you know of some upcoming events of interest to Midwest amateurs that should be posted here or if you find a bad link on this site, please let us know. Contact Scotty, W9VHL by E-mail ( or by LL at 314.822.1573.

Jan Alvestad's Remarks & Forecast (

Propagation Forecast
Recent developments: "The geomagnetic field was quiet to minor storm on March 21 under the influence of a high speed stream from CH797. Solar wind speed at SOHO ranged between 335 and 719 km/s. Solar flux at 20h UTC on 2.8 GHz was 71.0 (decreasing 12.2 over the last solar rotation). The average 90 day 10.7 flux at 1 AU was 73.7. The Potsdam WDC planetary A index was 23 (STAR Ap - based on the mean of three hour interval ap indices: 23.4). Three hour interval K indices: 13423554 (planetary), 23433433 (Boulder) The background x-ray flux is at the class A4 level. At the time of counting spots (see image time), spots were observed in 3 active regions using 2K resolution (SN: 35) and in 2 active regions using 1K resolution (SN: 23) SDO images on the visible solar disk. New region 12643 [N08E70] rotated into view on March 20 and was numbered by SWPC the next day. Spotted regions not numbered (or interpreted differently) by SWPC: New region S5629 [N15E29] was observed with a tiny spot in an old plage area. New region S5630 [S04W57] emerged with tiny spots. "
Coronal Mass Ejections (CMEs), "March 19-21: No obviously Earth directed CMEs were observed in available LASCO imagery."
Coronal Holes "A recurrent trans equatorial coronal hole (CH797) was in an Earth facing position on March 18-21. A recurrent trans equatorial extension (CH798) of the southern polar coronal hole will likely rotate across the central meridian on March 24-26.."
Propagation and Forecast: "Long distance low and medium frequency (below 2 MHz) propagation along paths north of due west over upper middle latitudes is poor. Propagation on long distance northeast-southwest paths is poor to fair. Forecast The geomagnetic field is expected to be quiet to minor storm on March 22-23 and quiet to unsettled on March 24 due to effects from CH797."
24 Hour Summary: (Courtesy of and NASA) "Solar activity was very low. A new spot group rotated onto the visible disk and was assigned as NOAA/SWPC Region 2643 (N09E72, Hrx/alpha), but was inactive. No Earth-directed CMEs were observed in available coronagraph imagery. .Forecast... Solar activity is expected to remain very low with a slight chance for C-class flares all three days (22-24 Mar) due to new Region 2643. [Report of Solar-Geophysical Activity] Mar)."

This Site Last Revised 22 March 2017 at 1422 UTC.
Copyright 1996-2017 Gateway Chapter 10-10 International. All rights reserved.

Solar X-rays:

Geomagnetic Field:

Solar activity was very low and only low-level background flares were observed this period. Region 2488 (N03E12, Dai/beta) exhibited minor growth but Regions 2486 (S19W09, Hrx/alpha) and 2487 (S12W05, Cao/beta) were in decay. No Earth-directed coronal mass ejections (CMEs) were observed in available coronagraph imagery. .Forecast... Solar activity is expected to be very low with a chance for C-class flares over the next three days (24-26 Jan). From

Quick callsign lookup: free counters

Favorite Links

[The NEW 10-10 International Home Page]
[ARRL Home Page]
[ARRL Midwest Division]
[Super Amateur License study site sponsored by ICOM America],
[Tony's Weekly 10M Band Report]
[Buckmaster's World-wide Ham Call Server]
[NOAA Radio User's Page - Current HF Conditions]
[Simple, down-to-earth band condition information]
[Jan Alvestad's Comprehensive Solar Terrestial Propagation Information]
[Mississippi Valley DX/Contest Club]
[AC6V Extensive (now over 6,000) Ham Radio Links]
[NW7US Amateur and Shortwave Radio Command Center ]
[Lone Star DX Association - extensive)]
[Announced DX Operations courtesy of NG3K]
[Real Time APRS Map courtesy of OH2KKU and associates and Google Maps' API]
[4U1ITU Selected Amateur Radio Web Sites]
[10M DX Spots from OH2AQ]
[DX-World: A serious source of information for the serious DXer]
[WA7BNM Complete Contest Calendar]
[Extensive Contesting Site]
[Extensive Weekly DX News from the famous Italian 425 DX Group]
[The widely acclaimed DX Notebook]
[K8CX Ham Gallery Links Page]
[The Fabulous Illinois JavaRadio All Band Receiver is here!]
[Ionospheric Pertubations]
[Information Data Center - The Royal Observatory of Belgium]
[NW7US Space and Propagation Resource Center]
[WM7D's 27 Day NASA Forecast]
[News about Solar Cycle 24 updated every day]

Click for Saint Louis, Missouri Forecast


Email: W9VHL,

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