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 2324 - 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.

<Phone Fray 0230Z-0300Z, Apr 19
CWops Mini-CWT Test 1300Z-1400Z, Apr 19 and 1900Z-2000Z, Apr 19 and 0300Z-0400Z, Apr 20
img src=" /mo/gateway1010/images/colorbar.gif">

Upcoming Contests of Local Interest

April 2017

UK/EI D1745X Contest, CW 1200Z, Apr 22 to 1200Z, Apr 23
SP DX RTTY Contest 1624200Z, 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

May 2017

AGCW QRP/QRP Party 1300Z-1900Z, May 1
RSGB 80m Club Championship, SSB 1900Z-2030Z, May 1
ARS Spartan Sprint 0100Z-0300Z, May 2
Phone Fray 0230Z-0300Z, May 3
CWops Mini-CWT Test 1300Z-1400Z, May 3 and 1900Z-2000Z, May 3 and 0300Z-0400Z, May 4
432 MHz Spring Sprint 1900 local - 2300 local, May 3
MIE 33 Contest 2300Z, May 3 to 0300Z, May 4
NRAU 10m Activity Contest 1700Z-1800Z, May 4 (CW) and 1800Z-1900Z, May 4 (SSB) and 1900Z-2000Z, May 4 (FM) and 2000Z-2100Z, May 4 (Dig)
NCCC RTTY Sprint 0145Z-0215Z, May 5
NCCC Sprint 0230Z-0300Z, May 5
Araucaria VHF Contest 0000Z, May 6 to 1600Z, May 7
10-10 Int. Spring Contest, CW 0001Z, May 6 to 2359Z, May 7
SBMS 2.3 GHz and Up Contest and Club Challenge 0600 local, May 6 to 2359 local, May 7
Microwave Spring Sprint 0800-1400 local, May 6
F9AA Cup, PSK 1200Z, May 6 to 1200Z, May 7
ARI International DX Contest 1200Z, May 6 to 1159Z, May 7
7th Call Area QSO Party 1300Z, May 6 to 0700Z, May 7
Indiana QSO Party 1500Z, May 6 to 0300Z, May 7
FISTS Spring Slow Speed Sprint 1700Z-2100Z, May 6
Delaware QSO Party 1700Z, May 6 to 2359Z, May 7
New England QSO Party 2000Z, May 6 to 0500Z, May 7 and 1300Z-2400Z, May 7
Phone Fray 0230Z-0300Z, May 10
CWops Mini-CWT Test 1300Z-1400Z, May 10 and 1900Z-2000Z, May 10 and 0300Z-0400Z, May 11
RSGB 80m Club Championship, Data 1900Z-2030Z, May 10
NAQCC CW Sprint 0030Z-0230Z, Apr 11
NCCC RTTY Sprint 0145Z-0215Z, May 12
NCCC Sprint 0230Z-0300Z, May 12
Jakarta DX Contest 40m 1000Z-2200Z, May 13
Portuguese Navy Day Contest 1100Z, May 13 to 2300Z, May 20
HPC World Wide DX Contest 1200Z, May 13 to 1159Z, May 14
SKCC Weekend Sprintathon 1200Z, May 13 to 2400Z, May 14
VOLTA WW RTTY Contest 1200Z, May 13 to 1200Z, May 14
CQ-M International DX Contest 1200Z, May 13 to 1159Z, May 14
Arkansas QSO Party 1400Z, May 13 to 0200Z, May 14
MARAC County Hunters Contest 1400Z-2400Z, May 13 and 1400Z-2400Z, May 14
FISTS Spring Unlimited Sprint 1700Z-2100Z, May 13
50 MHz Spring Sprint 2300Z, May 13 to 0300Z, May 14
WAB 7 MHz Phone 1000Z-1400Z, May 14
UA2 QSO Party 1300Z-1659Z, May 14
4 States QRP Group Second Sunday Sprint 0000Z-0200Z, May 15
Phone Fray 0230Z-0300Z, May 17
CWops Mini-CWT Test 1300Z-1400Z, May 17 and 1900Z-2000Z, May 17 and 0300Z-0400Z, May 18
NCCC RTTY Sprint 0145Z-0215Z, May 19
NCCC Sprint 0230Z-0300Z, May 19
Slobozhansky Sprint Contest 1800Z-1959Z, May 19 (SSB) and 2000Z-2159Z, May 19 (CW)
UN DX Contest 0600Z-2100Z, May 20
NZART Sangster Shield Contest 0800Z-1100Z, May 20 and 0800Z-1100Z, May 21
Aegean RTTY Contest 1200Z, May 20 to 1200Z, May 21
His Maj. King of Spain Contest, CW 1200Z, May 20 to 1200Z, May 21
EU PSK DX Contest 1200Z, May 20 to 1200Z, May 21
Feld Hell Sprint 1600Z-1759Z, May 20 and 2000Z-2159Z, May 20
Baltic Contest 2100Z, May 20 to 0200Z, May 21
Run for the Bacon QRP Contest 0100Z-0300Z, May 22
SKCC Sprint 0000Z-0200Z, May 24
Phone Fray 0230Z-0300Z, May 24
CWops Mini-CWT Test 1300Z-1400Z, May 24 and 1900Z-2000Z, May 24 and 0300Z-0400Z, May 25
RSGB 80m Club Championship, CW 1900Z-2030Z, May 25
NCCC RTTY Sprint 0145Z-0215Z, May 26
NCCC Sprint 0230Z-0300Z, May 26
CQ WW WPX Contest, CW 0000Z, May 27 to 2359Z, May 28
SARL Digital Contest 1300Z-1600Z, May 28
QRP ARCI Hootowl Sprint 2000 local - 2400 local, May 28
Phone Fray 0230Z-0300Z, May 31
CWops Mini-CWT Test 1300Z-1400Z, May 31 and 1900Z-2000Z, May 31 and 0300Z-0400Z, Jun 1

[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 active to minor storm on April 22 under the strong influence of a high speed stream associated with CH802. Solar wind speed at SOHO ranged between 593 and 782 km/s. Solar flux at 20h UTC on 2.8 GHz was 83.6 (increasing 6.4 over the last solar rotation). The average 90 day 10.7 flux at 1 AU was 76.4. The Potsdam WDC planetary A index was 46 (STAR Ap - based on the mean of three hour interval ap indices: 46.4). Three hour interval K indices: 55555545 (planetary), 66565434 (Boulder) The background x-ray flux is at the class A9 level. At the time of counting spots (see image time), spots were observed in 4 active regions using 2K resolution (SN: 66) and in 2 active regions using 1K resolution (SN: 29) SDO images on the visible solar disk. Region 12651 [N11E18] was mostly quiet and stable. Region 12652 [N14E28] was quiet and stable. Region 12653 [S10E61] was mostly quiet and stable. Spotted regions not numbered (or interpreted differently) by SWPC: S5648 [N08W24] reemerged with a small spot."
Coronal Mass Ejections(CMEs) "April 20-22: No obviously Earth directed CMEs were observed in available LASCO imagery."
Coronal Holes "A recurrent trans equatorial coronal hole (CH802) will rotate across the central meridian on April 20-23. "
Propagation and Forecast: "Long distance low and medium frequency (below 2 MHz) propagation along paths north of due west over upper middle latitudes is very poor. Propagation on long distance northeast-southwest paths is poor. Forecast The geomagnetic field is expected to be unsettled to minor storm on April 23-26 with occasional major storm intervals possible due to effects from CH802. "
24 Hour Summary: (Courtesy of and NASA) "Solar activity was very low. The largest solar event of the period was a B9/Sf flare at 22/0034 UTC from Region 2651 (N12E17, Cao/beta). Region 2653 (S09E57, Hax/alpha) developed an additional spot near the leader spot. There were no Earth-directed CMEs observed in available coronagraph imagery. .Forecast... Solar activity is expected to be very low with a chance for C-class flare activity over the next three days (23-25 Apr).

This Site Last Revised 23 April 2017 at 1619 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 eve day]

Solar activity was at very low levels. Region 2650 (N08W09, Axx/alpha) was unremarkable and absent of significant flare activity. No Earth-directed CMEs were observed in available satellite imagery. .Forecast... Solar activity is expected to be very low with a slight chance for C-class activity for the remainder of day one (15 Apr). Days two and three (16-17 Apr) are likely to see an increased chance of C-class flares due to the anticipated return of old Region 2644 (N13, L=74).

Click for Saint Louis, Missouri Forecast
Solar activity was at low levels. A C3 flare occurred at 18/0941 UTC, with an associated CME first visible in LASCO C2 imagery at 18/1000 UTC. Initial analysis concluded the CME source region is on the East limb and will likely be off the Sun-Earth line. However, further forecaster analysis and WSA/Enlil modelling will occur to determine if the ejecta has an Earth-directed component. The final determination will be noted in the next discussion at 19/0030 UTC. .Forecast... Solar activity is expected to be very low with a chance for C-class flare activity and a slight chance for an M-class flare (R1-R2, Minor -Moderate radio blackout) on days one through three (18-20 Apr) due to the anticipated return of Region 2644 (N13, L=057), which produced occasional R1-R2 (Minor-Moderate) radio blackouts during its previous transit.


Email: W9VHL,

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