Volunteers Providing Emergency Communications for Multnomah County, Oregon

How I Run an Efficient Simplex Net

Our goal in all we do as ARES volunteers is to get the job done as accurately and efficiently as possible. A simplex net that covers a large geographical area is a particular challenge. Our monthly second Wednesday simplex net gives us the chance for net control and other net members to learn how to keep it simple and quick.

After a brief preamble, net control calls for checkins by team. As net control, after acknowledging the stations I hear, I ask the station with the strongest signal for any callsigns they have heard that I didn’t recognize. After acknowledging those stations, I then ask the relay station to call for any other team members who have not checked in or been recognized to try again. Before moving on to the next team I make one more call for any station to relay in any other stations they may have heard that I have not recognized.

All net members should copy all stations they hear and mark each callsign when it is recognized by net control. Not only is this good practice for when it’s your turn to be net control, it also means you will be ready if you are the station net control asks for relays. By marking callsigns when they are recognized, you won’t be relaying in stations already checked in and you will be able to relay in for that last call for any missed stations.

One key to keeping it efficient is for net members to NOT try to relay each scratchy station as it comes in. Be patient and wait until net control asks for relays. I have heard helpful minded stations offer relays before being asked and this can be confusing to net control and cause undue delays. Remember that what may be very difficult for you to hear may be perfectly clear to net control and that net control will ask for relays. Wait for that request. Another key is for net control not to agonize over each scratchy signal. Just recognize the clear ones first and then ask for relays. That’s what the relay stations are for.

This is a different procedure than the weekly net on the MC1 repeater. There, net control can ask a station with a poor signal to make adjustments and try again. If the signal is still not readable, net control can ask other stations to listen on the reverse and then ask the scratchy station to try once more. Then if someone did pick it up on reverse, they can offer the relay. Relays are not held to the end of each team’s checkins.

One last note: If you try to tune into the simplex net and cannot hear net control intelligibly or at all, don’t give up. Wait until you hear someone ask for your team’s relays. If you are on Delta, Echo or Mike teams, you will be waiting longer than those on the Alpha or Bravo teams. And of course Charlie Team is right there in the middle and often has the most relays thanks to those west hills.