Central SC CARC Simplex Net

PLEASE NOTICE! Upcoming Simulnet on Wednesday, Sept. 29 @ 7:30 PM. This is open to all CARC members as well as non-CARC licensed operators. In approximately 30-40 minutes (+/-) participants exchange signal reports from other simplex stations from all over central SC. – added 9.2.21

What’s a simulnet? Once per quarter (+/-), we conduct an exercise where we use Zoom and our radios concurrently to collect signal reports on station readability. Unlike a regular net, check-ins are made in callsign order, alphabetically. Each station states (for example) “This is AE3RB, Robert, and I’m QSY to 146.400 for check-in.” The operator, Robert, then checks in on 146.400 while the rest of us listen and document a signal report of 1 through 5. The station then returns to the Zoom session to let everyone know: “This is AE3RB, my check-in is complete.” Results of this survey are compiled in a composite summary and shared with participants. (Scroll down to see the attached “Central SC CARC Simplex Station Readability Summary.”) This provides a good snapshot of “Who can copy me?” and “Who can I copy?” If you are interested in participating in this exercise, please respond to the invitation or send a note to KN4KRZ at goddard.mw@gmail,com to be added to the check-in list and the Zoom invitation.

Planning is now underway! On Saturday October 23, from 9:00 AM – 10:00 AM, we will be conducting a one hour emergency communication practice exercise for counties in Emergency Management Area 3 (EMA-3) which includes Newberry, Fairfield, Kershaw, Calhoun, Saluda, Lexington and Richland. (Other counties are welcome to participate as well.)

Participants are needed! This is an opportunity for experienced operators to practice and enhance their emergency communication skills. For anyone who has not previously participated in this type of exercise, this will be a good first time experience as we are setting this up like an open-book test (low stress, and ungraded). The exercise is open to all licensed operators including ARES members and also non-ARES members. – added 9.13.21

For anyone interested in participating or simply listening in to learn about emergency communication, please contact your county ARES Emergency Coordinator as listed here: Leadership Directory – South Carolina Amateur Radio Emergency Services (ares-sc.org) Or, you may contact Mark @ goddard.mw@gmail.com.

What is simplex? When we use the term simplex, we’re talking about radio to radio communication directly, without using a repeater.

Why should we care about simplex? We know there is always the possibility of an emergency which can make normal communication systems inoperable. This might include telephone, internet and local VHF/UHF repeaters. Similarly, such an emergency can result in any or all of these systems becoming overloaded with traffic. In either case, Simplex may be the only option available for communication and passing of messages.

The Central SC CARC Simplex Net exists to provide an opportunity to learn and practice simplex skills. If local repeaters are out of service, who would you be able to contact and who could contact you? We certainly don’t want to wait until an emergency to find out.

This net is conducted on the 1st and 3rd Wednesdays of each month at 7:30 PM on frequency 146.400. All licensed operators are welcome and encouraged to participate.

Important things to keep in mind for simplex:

Depending on your location and station characteristics, you may not hear anyone immediately at the start time of the net. After 15-20 minutes into the net, if you still have not been able to hear a net control station (NCS), please make a call to see if anyone on frequency can hear you. If they can, ask them to relay your check-in.

For simplex, we encourage participants to listen for and offer relays to those who may be struggling to check in. These are habits we can and should develop in the simplex net which can help us be successful in time of need. 

Checking in by area (see the Simplex Check In Areas PDF below) is encouraged. Why?

Different from a repeater net, when using simplex, stations are less able to hear one another. As such, the likelihood of doubling (or tripling) increases. While we accept that some doubling is likely, it makes sense to try to keep it to a minimum as it delays check-ins and prolongs the net.

When we take check-ins by area, it’s more likely that people can hear other nearby stations, especially when we turn the squelch down on our radios. This is helpful to copy weaker stations (consider someone using an HT, or situated in a low-lying area) and more distant stations (perhaps a station in a different county) attempting to check in directly with the NCS or with the assistance of a relaying station. 

Every effort will be made to run Netlogger during this net. You can follow along and use the AIM chat feature to add comments, etc. Even if you are not able to check-in by radio, you can leave a note in the AIM window. We can use that to identify coverage gaps and consider how we might improve coverage for those areas.

Lastly, if you know someone else who is interested in learning/practicing simplex, please encourage them to participate in this net.

Net Control Rotation Schedule

DateDayNet Controller Station
7/7/211st WednesdayKD4HDR, Russ
7/21/213rd WednesdayKC4UAL, Steve
8/4/211st WednesdayKN4KRZ, Mark
8/18/213rd WednesdayKD4HDR, Russ
9/1/211st WednesdayKC4UAL, Steve
9/15/213rd WednesdayKN4KRZ, Mark


Thursday evenings @ 8:30 SC Midlands ARES Net

To get involved in the South Carolina’s Midlands ARES, join this group and join us for our weekly MIDLANDS ARES Training Net at 8:30pm on Thursdays at 444.875, Positive offset with a 91.5 Tone. Additional information is available at the Facebook page for “SC Midland ARES.”

Sunday evenings @ 9:00 Ridge Amatuer Radio Club

Ridge Amateur Radio Club 9pm simplex net 146.550 then moving to the 147.255 + 123.0 repeater then moving to 10m 28.360

Central SC CARC Simplex Net Script

Central SC CARC Simplex Check In Areas

Central SC CARC Simplex Readability Summary

Permanent link to this article: http://w4cae.com/carc-wednesday-net-schedule/