CQ Public Service On the Web

Three-Mile Island: Amateur Radio's Response

2011-05-15T11:34:00.000-07:00

Technicians enter the Unit 2 reactor building on Three Mile Island in March 1979. (Courtesy of WikiMedia Commons)

Former Public Service columnist for CQ Amateur Radio magazine, Bob Josuweit, WA3PZO, served as the ARRL Eastern Pennsylvania Emergency Coordinator for 10 years in the 1970s and early 1980s. On his watch, the United States experienced its only nuclear accident, Three Mile Island (TMI), located along the Susquehanna River south of Harrisburg. TMI is in the ARRL Eastern Pennsylvania section. Here are WA3PZO's recollections of the amateur radio response to the disaster of the March 29, 1979 accident. - Ed.

Harrowing Reflections of a
U.S. Nuclear Meltdown

By Bob Josuweit, WA3PZO

It was a typical weekday morning. As I ate breakfast I had the local news radio station on catching up on the headlines. The story broke, "Site Emergency Declared at TMI" (6:56 AM). In the Harrisburg area a call for communications assistance came from the county office of Emergency Preparedness.
Under the direction of Bob Marziri, WA3AVX (SK), members of the Central Pennsylvania Repeater Association set up communications at the Pennsylvania state capitol in Harrisburg, just 13 miles from TMI, Middletown (the closest town to TMI), the local Red Cross Office, and WHP television/radio, which served as the rumor control center.
The Club's four repeaters (2 on 146 Mhz, 1 on 220 Mhz, and an RTTY repeater on 2 meters) were utilized to their fullest. Confidential traffic was passed on RTTY for security reasons. The information relayed by amateur radio to WHP had a calming effect on the community, offsetting some of the rumors which were rapidly spreading through the area.

During the day plans were made to move all operations at the county EOC 30 miles north if it became necessary to evacuate the Harrisburg area. Pennsylvania Governor Thornburg recommended that pregnant women and preschool children within five miles of TMI leave the area. At this point communications were established at the Red Cross Evacuation Center in Hershey, some eight miles away from TMI.

Twenty-eight hours after the accident began Lieutenant Governor William Scranton III said that Metropolitan Edison, the plant's owner, had assured the state that "everything is under control". Later that day, Scranton changed his statement, saying that the situation was "more complex than the company first led us to believe". There were conflicting statements about radiation releases. Schools were closed and residents were urged to stay indoors. Farmers were told to keep their animals under cover and on stored feed.

For the next two days the situation remained in a holding pattern as officials attempted to determine the extent of the damage at TMI.

Friday morning the 'patient' had gone critical. TMI station manager Gary Miller announced a general emergency', defined as having the "potential for serious radiological consequences" to the general public. A hydrogen bubble was expanding inside the damaged reactor. The American Red Cross, Mid-Atlantic Division, in Philadelphia called Josuweit. The message was simple it sent shock waves throughout the state. "There is a possibility of a three-county evacuation - please establish communications." As the day progressed, that figure increased to a possibility of five counties or everything within a 20-mile radius of TMI; population 630,000.

State government officials quickly developed the evacuation plan. The plan quickly showed the importance of Amateur Radio. Amateur Radio would provide primary communications between areas being evacuated, the evacuation centers, and the headquarters of the Pennsylvania Emergency Management Agency (PEMA). Many Pennsylvania counties were preparing to receive between 20,000 and 25,000 evacuees.
Philadelphia, just 100 miles away, was designated to receive up to 70,000 evacuees. Schools would house between 1,000 and 3,000 evacuees. Each shelter would require Amateur Radio communications 24 hours a day!

By Monday the patient had stabilized. The hydrogen bubble in the damaged reactor was reduced. The need for evacuation was not as great. However amateur radio operators were still at their stations 10 days after the accident when the Governor lifted his recommendation for people to stay out of the affected area. Little, if any health and welfare traffic came into the affected area.

The citizens of Pennsylvania placed a huge responsibility on the state's amateur radio operators in providing communications. They met the challenge. Like many, they left their families behind to provide a service to the community, not knowing what challenges or health risks lie ahead.

Since TMI, amateur radio operators have played an important role providing communications during regularly scheduled nuclear power plant exercises. It is safe to say that since TMI Pennsylvania hams have remained RADIOactive.

Bob Josuweit, WA3PZO, vividly recalls the events surrounding the nuclear meltdown at Three Mile Island in 1979 - when he served as ARRL Eastern Pennsylvania Emergency Coordinator. (Courtesy of WA3PZO)

Part I: A Portable 2-Meter EmComm Beam

2011-05-15T11:21:00.000-07:00

A six-element portable direct-feed 2-meter beam may be just what you need next time you’re called to EmComm duty in the field. With coat hangers and PVC, we'll show you how to make this simple and effective trail-friendly antenna. It is based on a design by Kent Britain, WA5VJB, of Grand Prairie, Texas and configured in this KI6SN version to be disassembled for carrying to a disaster site or community event, then easily reassembled on the spot.
This is the first of several parts that will detail step-by-step how to build, test and operate using this six-element portable 2-meter beam.
In Part I we start with a little homework: A 440 MHz version of this antenna was featured in the April 2011 edition of the free, online amateur radio magazine WorldRadio Online. Before we get into the nitty-gritty of building this 2-meter version, please read "A 440 MHz Coat Hanger Beam to Hang Your Signal On," in the edition's Trail-Friendly Radio column on Page 22.
Simply CLICK HERE to visit WRO's homepage and click on Previous 2011 Issues in the menu on the left-hand side of the page.
Most of the construction principles used in the 440 MHz will be employed in the 2-meter version. It's important to familiarize yourself with them before we get started.
In Part II, we'll gather the parts and begin fashioning them for this outstanding antenna. (HINT: Start hunting for about a dozen metal coat hangers. That should be more than enough.)
We'll send out notices on WRO's Twitter and Facebook sites to let you know when the subsequent installments are posted.
Meantime, please get going on your homework, and you'll be hearing from us soon as we put the pieces and construction methodology together for your homebrewing pleasure.

- Richard Fisher, KI6SN

LOST AND FOUND: See 'Rescue in Miller Canyon,' in Spring 2011 CQ VHF magazine

2011-05-15T10:17:00.000-07:00

Disoriented and alone, a lost Arizona hiker is found with the help of a well-equipped and manned mobile communications unit, experienced search and rescue personnel and highly-skilled radio direction finders – all radio amateurs who feel at home in the field.
  CQ VHF magazine Homing In columnist Joe Moell, KØOV, writes in the Spring 2011 edition about the dramatic rescue of a hiker lost in inhospitable Miller Canyon, near Sierra Vista, Arizona. The U.S. Forest Service has oversight of the area.
"It's easy to get lost in the Huachuca Mountains," Moell writes. Jeremy Hyde, KE7ENZ, "had just completed an overnight Boy Scout activity on Miller Peak," when he decided to return ahead of the rest of the group. He inadvertently followed the wrong trail and found himself hopelessly lost.
Fortunately, 'ENZ had a Kenwood TH-K2AT handie-talkie with him. His call for help on the Cochise County Amateur Radio Association repeater sparked a remarkable demonstration of direction-finding skills - with the help of the county's mobile communications unit. Charles Campbell, K4AFN, said Hyde "helped the SAR (search and rescue) team determine that he was on the eastern slope of the mountain next to a fest-moving stream that was very loud. The dense brush and trees made it very difficult to move around. He could see Sierra Vista, but he was not able to provide any landmarks to determine a bearing."
  Cooperation and triangulation were the key words of the day as skilled Cochise County ARES®/RACES radio amateurs teamed to zero-in on Hyde's location for a rescue.
  CLICK HERE for information on how to get full details about how DFing operators saved the day in "Rescue in Miller Canyon."

SKYWARN Recognition Day - WX4NC, North Carolina

2011-03-02T17:24:00.000-08:00

WX4NC SKYWARN Recognition Day participant Dave Roy, W4DNA, operates on the high frequencies at the Raleigh NWS in North Carolina. For the complete story, see the March 2011 CQ Amateur Radio magazine Public Service column by Richard Fisher, KI6SN. (Courtesy of K4BGM)

Bob Woodson, WX4MMM, left, operates IRLP at WX4NC while Chris Benson, KJ4LKE, makes contacts on local repeaters. (Courtesy of K4BGM)

Virginia Enzor, NC4VA, middle, oversees WX4NC radio operation by Cassie Mentha, KJ4GKP, foreground, and logger Kristina Benson. (Courtesy of K4BGM)

Cassie Mentha, KJ4GKP, makes WX4NC contact via IRLP with WX4NHC at the National Hurricane Center, Miami. (Courtesy of K4BGM)

Scott Lewis, KJ4BPV, standing, watches over WX4NC SRD 2010 HF radio operation by spotters Chris Benson, KJ4LKE, and logger Kristina Benson. (Courtesy of K4BGM)

SKYWARN Recognition Day - WX9IWX, Indiana

2011-03-02T17:17:00.000-08:00

Ray Deahl, N8FHX, logs another contact on 20 meters for WX9IWX at the NWS Northern Indiana office during SRD 2010. (Courtesy of KG4KJQ)

SKYWARN Recognition Day - WX4NHC, Miami

2011-03-02T17:13:00.000-08:00

A SKYWARN™ tour group tours gets a look at operations at WX4NHC at the National Hurricane Center in Miami during SRD 2010. (Courtesy of WD4R)

SKYWARN Recognition Day - K4OHX, Tennessee

2011-03-02T17:10:00.000-08:00

Michael Whitney, K4MFW, takes to the air at K4OHX in Tennessee during his first SKYWARN™ Recognition Day in December 2010. (Courtesy of K4OHX)

2010 Chicago Marathon Amateur Radio Support

2011-03-02T17:04:00.000-08:00

Mark Klocksin, WA9IVH, serves as a medical net control during the 2010 Chicago Marathon in which 38,000 runners took part. For complete details about the race and the radio amateurs' activity, see the March 2011 edition of CQ Amateur Radio's Public Service column by Richard Fisher, KI6SN. (Photograph courtesy of K9RST)

CHILE 'QUAKE: Frequencies for EmComm

2010-02-27T08:43:00.000-08:00

For IARU / Red Chilena Nor Austral de Servicio (RECNA) monitoring frequencies for the 8.8 Chilean earthquake, click: http://bit.ly/a0EKMX

- WorldRadio Online newsroom

To The Rescue: SoCal Couple Honored for Rescue

2010-02-25T14:34:00.000-08:00

CQ Amateur Radio magazine's March 2010 Public Service column features a story by Richard Fisher, KI6SN, chronicling the heroic efforts of a Southern California couple in helping save the life of a severely injured hiker on Catalina Island.

Deborah Ava, KJ6CRZ, and Karl Tso, KI6PCW, of Topanga, CA, were honored by the Los Angeles County Board of Supervisors for their life-saving efforts in the life-saving rescue of the 59-year-old man. The duo used 2-meter FM repeater communications to summon help. (Photographs courtesy of KI6PCW)

Using an ICOM IC-92AD VHF/UHF handi-talkie, KI6PCW was able to get assistance in contacting authorities from Scott Bastian, KD6QZX, of Fullerton; and Joyce Wood, KD6HYO, of Costa Mesa on the Southern California mainland. They worked together to assure emergency agencies were notified and on the way to help the severely injured Catalina hiker.

Click here to visit CQ Amateur Radio magazine's Web site.

If you have a story to share about how amateur radio played a role in a rescue operation, please send it via e-mail to: ki6sn@cq-amateur-radio.com

For an enlarged view, click on the images.

SNAPSHOTS: SKYWARN Recognition Day '09

2010-01-11T13:14:00.000-08:00

The Public Service column in the February 2010 edition of CQ Amateur Radio magazine has in focus SKYWARN Recognition Day 2009, held Dec. 5.

Below are additional snapshots from SKYWARN stations from around the country during the event. There's also a short story of the event station in Tavares, FL by Ted Luebbers, K1AYZ.

For an enlarged view of most of the photographs on this site, please click on the image.

Click here for more information about CQ Amateur Radio magazine.

73,

Richard Fisher, KI6SN
Public Service editor, CQ Amateur Radio magazine

ki6sn@cq-amateur-radio.com

SKYWARN RECOGNITION DAY: WX4NC, Raleigh, NC

2010-01-11T12:18:00.000-08:00

From foreground to background on SKYWARN Recognition Day at WX4NC were Courtney Enzor, KI4HOS; Cassie Mentha, KJ4GKP; and Virginia Enzor, NC4VA.

Central Carolina SKYWARN / Raleigh NWS participants at the National Weather Service office, from left:

KNEELING – Dave Roy, W4DNA; Jeff Orrock, KI4KKX.

BACK ROW – Randy Stark, WN4RSS; Scott Lewis, KJ4BPV; Ken Stark, W4KJS; Virginia Eznor, NC4VA; Bob Woodson, WX4MMM; Chris Benson, KJ4LKE; and Christine Benson.

On SKYWARN Recognition Day, Cassie Mentha, KJ4GKP, savors the moment after making her first HF contact ever.

Jeff Orrock, KI4KKX, assists with antenna installation from the roof of the Raleigh NWS in rain and cold.

Photographs courtesy of Central Carolina SKYWARN / Raleigh NWS, WX4NC

SKYWARN RECOGNITION DAY: N5CCW, Corpus Christi, TX

2010-01-11T11:48:00.000-08:00

At N5CCW's SKYWARN Recognition Day station, an Icom 746, is connected to a temporary inverted V antenna via an LDG antenna tuner. Software on the laptop is MixW. The set-up uses a Rigexpert interface from laptop to 746 for PSK31.

Larry Boudreau, W5LDB, and James Ermis, AD5TC, operate the permanent station at the Corpus Christi NWS office. Station is a Kenwood TS2000 connected to a multiband inverted-V.

A temporary Inverted V antenna was part of the N5CCW SKYWARN Recognition Day set-up.

Steve Pituch, W2MY, provided an Elecraft K3 HF radio during the N5CCW operation.

A daytime picture from N5CCW shows the swamp-bound location of the temporary antenna. Water can be seen in the lower right of the picture.

Jab Murray, K5CNZ, left, and Steve Putich, W2MY, make SKYWARN contacts on his K3.

Steve Hampton, NØWZH, tries to get one more PSK contact.

Members of the crew at N5CCW raises the mast of the U.S. Marine surplus push-up mast.

The temporary antenna is finally raised at N5CCW in Corpus Christi.

Photographs courtesy of N5CCW.

SKYWARN RECOGNITION DAY: WX1BOX, Taunton, MA

2010-01-11T11:14:00.000-08:00

Rob Macedo, KD1CY, ARES SKYWARN Coordinator for NWS Taunton, talking on VHF/UHF while Jeremy Breef-Bilz, KB1REQ, monitors Echolink.

KB1REQ works HF while Carl Aveni, N1FY, Assistant ARES SKYWARN Coordinator for NWS Taunton, mans Echolink.

Jim Palmer, KB1KQW, Assistant ARES SEC and SKYWARN Coordinator on VHF/UHF on SKYWARN Recognition Day 2009.

At the Taunton, MA SKYWARN operation, Dennis Dura, K2DCD, works VHF/UHF.

K2DCD, right, works HF; and Greg Glynn, W1VFB, is on VHF/UHF while Rob Macedo, KD1CY looks on.

Photographs courtesy of WX1BOX.

SKYWARN RECOGNITION DAY: WX7LKN, Elko, NV

2010-01-11T10:53:00.000-08:00

On SKYWARN Recognition Day, the Elko NWS station - WX7LKN - was in action. Here's the Elko ARC portable light plant and A4S beam to the left.

At WX7LKN, Elk, NV on SKYWARN Recognition Day 2009, were, from left, Kent LeBarts, K6IN; Justin Gleason, KF7DLW; Don Tanner, KF7GGR; and Pete Johnson, W7TKO.

Photographs courtesy of WX7LKN and Kathy Stich, W7BDY.

SKYWARN RECOGNITION DAY: WX4NHC, Miami, FL

2010-01-11T09:00:00.000-08:00

The United States flag flies over the roof bridge of the National Hurricane Center in Miami on SKYWARN Recognition Day, 2009 where WX4NHC took to the air in recognition of weather observers from around the world - many of them radio amateurs.

Photography courtesy of WX4NHC, the National Hurricane Center

SKYWARN RECOGNITION DAY: K1AYZ, Tavares, FL

2010-01-11T08:03:00.000-08:00

The Royal Harbor Amateur Radio Club of Tavares, FL took part in SKYWARN Recognition Day - an event to strengthen the relationship between amateur radio operators and the National Weather Service.

During times of dangerous weather conditions local ham radio operators within their communities become the eyes and ears for the NWS by reporting things like tornados, hail storms , and damaging wind conditions to a regional NWS office.

These people are trained by the National Weather Service to be certified Skywarn Spotters. The members of the Royal Harbor Amateur Radio Club in Lake County decided to see how many NWS stations they could contact across the United States to help celebrate SKYWARN Recognition Day.

We set up at my home of (Ted Luebbers, K1AYZ) and operated on HF, VHF, and UHF using single sideband, packet, Echolink and PSK 31. Since the RHARC is made up of retirees that need their sleep, we didn’t operate overnight like some serious contesters might.

We started at 1230 UTC and continued until 2200 UTC. There were six members involved in making this event a success. They were Carl DePoy, K8BBT; Ken Secora, N9KS; Mike Ward, WA9VIQ; Luke Short, KJ4QVK; and myself. Also my XYL , Deb Luebbers, KB1FEF, provided logistical support with coffee and food.

Three members of our club are already card carrying SKYWARN Spotters. We contacted 30 National Weather Service offices across the country exchanging current weather information with each location. We accumulated the above total using the following modes of communication: High Frequency ( 9 ), PSK-31 ( 3 ), Echo Link ( 17 ), and 2 meter FM ( 1 ) .

Although these numbers may not be impressive to most contesters, we had a lot of fun making those contacts. This is the first time our newly formed club has tried anything like this and as a result we will be trying some other special events and contests in the future. Besides having a good time running the equipment and chasing down NWS contacts we learned how to divide up the jobs so we were not in each others way by splitting up operating positions and how not to cause interference with the various modes of communication we used.

We also got a chance to exercise some of our portable emergency equipment first by finding it, then getting it to run properly. Another benefit that we had not anticipated was the opportunity to acquaint two of our newer members with the two digital modes they had not seen before in operation. This may have sparked a new interest for them.

Our equipment consisted of two laptop computers: one for packet and the other for EchoLink. One PC was devoted to PSK-31 using Digi Pan 2.0 software with a SignaLink-USB attached to an ICOM 718.

For high frequencies we used an ICOM 756, for 2 meter FM and packet the gear was a Yaesu FT-7800R and a Kenwood TM-G707. Our antennas were a J-Pole for 2 meters, a Cushcraft R-6000 ground mounted and a Hustler MO-2 Spider mobile antenna mounted on a tripod on the back lawn. All in all it was a rewarding and fun day for all of us.

- Ted Luebbers, K1AYZ

IN THE PHOTOGRAPH: Carl DePoy, K8BBT, makes contacts during SKYWARN Recognition Day 2009 at K1AYZ in Tavares, FL. (Photograph courtesy of K1AYZ)

Haitian 'Quake: Initial report from IARU's CO2KK

2010-01-10T19:31:00.000-08:00

Arnie Coro, CO2KK, IARU Region II Area C Emergency Coordinator and member of the Federacion de Radioaficionados de Cuba, filed the following report regarding early action of radio amateurs providing emergency communications for the Haitian earthquake on Tuesday, Jan. 12:

A few minutes after the earthquake was felt in eastern Cuba's cities, the Cuban Federation of Radio Amateurs Emergency Net was activated, with net control stations CO8WM and CO8RP located in the city of Santiago de Cuba, and in permanent contact with the National Seismology Center of Cuba located in that city.

Stations in the city of Baracoa, in Guantanamo province, were also activated immediately as the earth movements were felt even stronger there, due to its proximity to Haiti. CO8AZ and CO8AW went on the air immediately, with CM8WAL following.

Baracoa could not contact Santiago de Cuba stations on 40 meters due to long skip after 5 p.m. local time, so several stations in western Cuba and one in Florida provided relays.

CO2KK, as IARU Region II Area C Emergency Coordinator, helped to organize the nets , on 7.045 MHz and also on 3.720 MHz, while local nets in Santiago de Cuba and Baracoa operated on 2 meters.

As late as 9:45 p.m. local time 0245 UTC, we have not been able to contact any amateur or emergency services stations in Haiti.

Amateurs from the Dominican Republic, Puerto Rico, Venezuela were monitoring the 40 meter band frequency, that I notified to the IARU Region II executive Ramon Santoyo, XE1KK, as in use for the emergency, requesting that 7.045 MHz be kept as clear as possible.

The activation of the Cuban seismic events emergency net was handled with great efficiency and it proved that the recently held " Meteoro 2009 " drill that emphasized on how to handle an emergency in case of a major earthquake, proved to be very useful indeed.

As this mail is going out,, we are still keeping watch on 7.045 MHz hoping that someone in Haiti may have access to a transceiver and at least a car battery to run it.

All information that has so far come from the Cuban seismologists tell us of a very intense earthquake, and also of the possibility of other events following.

At the early phase of the emergency, the population of the city of Baracoa was evacuated far away from the coast, as there was a primary alert of a possible tsunami event or of a heavy wave trains sequence impacting the coast line at the city's sea wall. Once again one can feel proud of amateur radio operators , who were able to start communicating with the areas that could possibly be affected in Cuba, in just a few minutes after the seismic event. If there had been radio amateurs in Haiti active, we could have establish links with them also.

I hope this gives you an idea of what's happening, and why, following the advice of the geophysicists we are keeping the 7.045 and 3.720 MHz frequencies active until further notice.

SATERN activates nets after Haitian 'quake

2010-01-10T19:14:00.000-08:00

SATERN, the Salvation Army Team Emergency Radio Net, has called a Full Alert Level DELTA III for the Haiti earthquake emergency, following a 7.0 temblor on Jan. 12, followed closely by a 5.9 aftershock.

According to SATERN's Web site, all nets are active:

14.265 MHz - primary daytime

7.265 and 3.977.7 MHz - evening and night

Click here for SATERN updates.

- Richard Fisher, KI6SN

Haitian 'Quake: Frequencies freed for normal use

2010-01-10T12:29:00.000-08:00

According to Ramon Santoyo, XE1KK, (via the ARRL):

"Considering that the amateur radio stations on the air from Haiti are operating in more regular patterns, Dr. Cesar Pio Santos, HR2P, IARU Region 2 EMCOR, has released the use of 7.045 MHz and 3.720 MHz. We thank the world radio amateur community for their support in keeping these frequencies clear during the past days."

Haitian 'Quake: Live audio on 14.300 MHz

2010-01-10T11:35:00.000-08:00

Click here for live audio of the Maritime Net (14.300 MHz) with updates from Haiti.

- Richard Fisher, KI6SN

Haitian 'Quake: Audio of HH2JR phone patch

2010-01-10T10:54:00.000-08:00

Haitian 'Quake: YV5s setting up base of operations

2010-01-10T09:28:00.000-08:00

Reinaldo Leandro, YV5AMH, president of IARU Region II in Caracas, Venezuela, writes that "we expect that Freddy Azpurua, YV5JF, and William Fourneau, YV5VE, will be operating after January 20, at approximately 19:30 UTC from a base located 5 Km (3.1 miles) west of Port au Prince (18.55N – 72.33W, Grid locator: FK38RW) in an activity coordinated between the Radio Club Venezolano and the Office of Communications of the Bolivarian Army, supporting the Venezuelan humanitarian aid in Haiti."

The planned frequencies frequencies (in MHz) and modes for 80, 40 and 20 meters:

SSTV
3.840.0
7.171.0
14.223.0

BPSK31
3.590.0
7.037.0
14.072.0

SSB
3.835
7.135 / 7.090
14.180.0

Haitian 'Quake: HH6JH heard from Port-au-Prince

2010-01-10T09:23:00.000-08:00

From the CQ / WorldRadio Online Newsroom

Some ham radio activity from Haiti is beginning to be heard, following the devastating Jan. 12 earthquake.

Fr. John Henault, HH6JH, in Port-au-Prince, made contact late Wednesday morning (Jan. 13) with the Intercontinental Assistance and Traffic Net (IATN) on 14.300 MHz, the IARU Global Centre of Activity frequency for emergency communications. Based on relays monitored by CQ Editor Rich Moseson, W2VU, Father John reported that he and those with him were safe, but had no power and no phone service. He was operating on battery power and hoping to get a generator running later in the day. He asked the station copying him, William Sturridge, KI4MMZ, in Flagler Beach, FL, to telephone relatives with information that he was OK.

The following frequencies are in use for earthquake-related traffic and should be kept clear unless you are able to provide requested assistance:

14.300 MHz (IATN)

14.265 MHz (SATERN)

7.045 MHz (IARU Region II)

3.720 (IARU Region II) MHz.

Additional frequencies may be activated on different bands at different times of day, so be sure to listen carefully before transmitting to make sure you are not interfering with emergency traffic.

We will continue to provide updates as information becomes available.