{"schema_version":"1.0","service":"Publicasta","type":"article","id":640,"slug":"orari_emcomm_js8call_receive_station_september_2026","title":"ORARI’s September EMCOMM activation: how to build a disciplined receive station for 7.110 MHz, JS8Call and satellite watch","excerpt":"Indonesia’s ORARI has asked amateurs to support a 11–24 September emergency-communications operation. Here is how to monitor the announced channels responsibly, separate useful traffic from noise, and prepare a receive-first station without creating interference.","language":"en","default_language":"en","canonical_url":"https://publicasta.com/ham_radio_diy_electronics/orari_emcomm_js8call_receive_station_september_2026?lang=en","image":{"url":"https://publicasta.com/storage/projects/40/pages/640/2026/09/8b6e497b-5ca0-4689-bc03-f99733c6f201.webp","alt":"A modest receive-first amateur-radio station with a generic HF receiver, headphones, notebook, UTC clock and antenna feedline on a desk."},"publisher":{"id":40,"slug":"ham_radio_diy_electronics","name":"Ham Radio & DIY Electronics","url":"https://publicasta.com/ham_radio_diy_electronics"},"author":{"name":"Anton Es"},"published_at":"2026-09-18T14:59:28+00:00","updated_at":"2026-09-18T14:59:28+00:00","content_markdown":"Indonesia’s Organisasi Amatir Radio Indonesia, or ORARI, has announced a national emergency-communications operation running from 11 through 24 September 2026. The notice asks amateurs to avoid interference, give priority to emergency traffic and maintain a listening watch where possible. It identifies 7.110 MHz for voice emergency communications, 7.100 MHz USB for JS8Call data communications, and 145.880 MHz uplink with 435.880 MHz downlink for the LAPAN-A2/IO-86 satellite path.\n\n ![A modest receive-first amateur-radio station with a generic HF receiver, headphones, notebook, UTC clock and antenna feedline on a desk.](https://publicasta.com/storage/projects/40/pages/640/2026/09/8b6e497b-5ca0-4689-bc03-f99733c6f201.webp)\n\n That is a current operating notice, not a new worldwide band plan. The frequencies are tied to this operation and its regional coordination. An operator outside Indonesia or outside the relevant IARU region should not assume that the same channels have the same status locally. Before transmitting, check the rules, band plan and emergency-coordinator instructions that apply to your licence and location. A receive-only station, however, can still be useful: it can help an operator understand what is active, record propagation conditions and be ready to pass verified information through the proper chain if asked.\n\n The practical question is not whether to build an elaborate emergency communications bunker in a weekend. It is how to make a modest station predictable enough that you can hear weak traffic, identify what you are hearing, preserve a useful log and avoid becoming another source of congestion.\n\n ## What the notice actually says\n\n The emergency-communications notice was circulated by IARU Region 3 on behalf of ORARI. It says the activation responds to a current disaster situation in Indonesia and requests cooperation from radio amateurs. The announced operating points are:\n\n - 7.110 MHz for voice emergency communications.\n- 7.100 MHz USB for JS8Call data communications.\n- 145.880 MHz uplink to the LAPAN-A2/IO-86 satellite.\n- 435.880 MHz downlink from the satellite.\n\n The most important instruction is behavioural: do not cause interference and give priority to emergency traffic. That instruction matters more than the temptation to test a new amplifier, send a long check-in or call repeatedly because a signal report is interesting. The notice also asks operators to follow additional operational announcements from ORARI. The [WIA reproduction of the IARU Region 3 notice](https://www.wia.org.au/newsevents/news/2026/20260911-2/index.php) is the clearest public reference currently available.\n\n The [Amateur Radio Newsline report for 18 September 2026](https://www.nerfd.net/2026/09/17/amateur-radio-newsline-report-2551-for-friday-september-18th-2026/) places the activation among other current amateur-radio stories, but a news summary is not a substitute for instructions from the coordinating organisation. Treat the ORARI/IARU notice as the operational reference and verify any later frequency, schedule or net-control changes before acting on material shared in forums or social media.\n\n ## Why a receive-first setup is the right starting point\n\n Emergency traffic is not a casual contest. A listener who has not been asked to participate may be most useful by reducing the amount of unnecessary traffic on the channel. A good receive-first station lets you monitor, time-stamp, classify and report what you actually heard without automatically keying the transmitter.\n\n This approach also exposes problems before they become transmission problems. A USB audio level that clips on receive, a computer clock that is several minutes wrong, a radio that drifts with temperature, or an antenna feed line with intermittent noise can all make a report unreliable. Receiving gives you time to find those faults while the station is electrically quiet.\n\n For a basic HF receive station, the essential chain is simple:\n\n 1. A radio that covers the required frequency and can select the correct sideband or data mode.\n2. An antenna suitable for the band, installed with attention to local safety and electrical clearances.\n3. A stable power source and a way to keep the radio and computer clock reasonably accurate.\n4. A computer or tablet running the appropriate decoder when digital monitoring is required.\n5. A notebook or logging application that records UTC, frequency, mode, signal description and confidence.\n\n A receiver does not need to be expensive. It does need to be quiet, stable and understood by the operator. A cheap receiver with a clean power supply and a sensible antenna can produce more useful observations than a premium transceiver connected to a noisy indoor wire.\n\n ## Setting up the 7.110 MHz voice watch\n\n Begin with the radio in the mode appropriate to the local operating instructions. For a normal 40-metre voice channel, that is commonly lower-sideband in amateur practice, but the station should follow the current ORARI direction and any regional coordination rather than relying on a generic memory of band conventions. Enter 7.110 MHz as the dial frequency only after checking the radio’s display convention and any offset or split settings. Disable split operation unless a coordinator explicitly instructs otherwise.\n\n Listen before touching the microphone. Note the noise floor, nearby carriers, fading, overlapping voices and the apparent geographic direction of stations if that can be inferred responsibly. Do not treat a clear signal as proof that the path is good everywhere. HF propagation may change quickly with local time, ionospheric absorption, thunderstorms and regional noise.\n\n A useful voice log entry is more specific than “heard emergency net.” Record the UTC time, dial frequency, mode, your location or grid, the station identifier if copied confidently, and a short factual description. For example:\n\n ```text\n2026-09-18 16:42 UTC | 7.110 MHz | LSB | voice\nCopied: YB station, callsign incomplete | readable 4/5, fading\nTraffic: net control requested location reports; no message copied\nConfidence: medium | no transmission made\n```\n\n Do not fill gaps in a callsign from expectation. If the first character is uncertain, mark it as uncertain. In an emergency log, a precise uncertainty is more valuable than a confident but invented detail. If a message contains a location, casualty figure, weather report or resource request, preserve the wording as closely as possible and mark whether you heard it directly or received it through another operator.\n\n Keep the receiver’s audio at a comfortable level and use headphones only if they improve intelligibility without isolating you from hazards in the room. If the station will be monitored for hours, make a short break plan. Fatigue creates missed callsigns and false certainty just as readily as a weak signal does.\n\n ## Monitoring the 7.100 MHz JS8Call channel\n\n The ORARI notice specifies 7.100 MHz USB for JS8Call data communications. That wording is important because a JS8Call frequency includes both a radio dial frequency and an audio offset inside the passband. Set the radio to USB, set the dial to the announced frequency, and allow the application to decode the audio spectrum rather than assuming that every visible trace at the edge of the waterfall is a valid message.\n\n JS8Call’s current official download page identifies version 3.0.3 as the July 2026 release. The project’s documentation also explains that the software uses USB and that standard calling frequencies are suggestions rather than universal permissions. The [JS8Call documentation](https://js8call.com/downloads.html) should be checked for the installed version, while the [user guide’s frequency section](https://js8call.com/JS8Call-improved/d6/d14/md_docs_2user__guide_2JS8Call__User__Guide.html) explains how dial frequency and audio offsets relate.\n\n Do not confuse the announced 7.100 MHz emergency channel with the commonly listed 40-metre JS8Call calling frequency around 7.078 MHz. They are different operating points. During a coordinated activation, the current emergency instruction takes precedence for the operation, subject to local regulations and any later coordination. If a local authority or net control moves traffic, update the station configuration and log the change rather than continuing to transmit or report on the old channel.\n\n For receive-only monitoring, the safest workflow is:\n\n - Start JS8Call with transmit disabled or with the radio’s PTT control disconnected.\n- Confirm that the radio is actually in USB and that the computer receives audio from the intended device.\n- Set the computer clock to UTC using a trusted time source before logging.\n- Watch the waterfall for several minutes before interpreting individual decodes.\n- Record the dial frequency, audio offset, software version and UTC time with important observations.\n- Save the application’s native log or export if the software supports it, but do not publish personal or sensitive emergency details casually.\n\n Digital decoding can make weak traffic visible, but a decode is not automatically an authenticated emergency message. Callsigns can be mistyped, text can be truncated and a repeated heartbeat can be mistaken for a request. Preserve the raw information, note the confidence level and pass it only through a recognised coordinator when a report is requested.\n\n A receive-only JS8Call setup also makes a good calibration exercise. Send no heartbeat and do not answer a station merely to prove that the decoder works. Instead, compare the software’s clock, frequency display and audio level with a known local test or a scheduled activity outside the emergency channel. The emergency frequency should remain available for the operation itself.\n\n ## The satellite line requires more than entering two frequencies\n\n The notice lists 145.880 MHz as the uplink to LAPAN-A2/IO-86 and 435.880 MHz as the downlink. A satellite contact depends on more than those numbers. The satellite must be above the horizon, the operator must use the appropriate mode and Doppler correction, and the local coordination must support the intended exchange. The 2-metre and 70-centimetre allocations, satellite subbands and permitted modes are jurisdiction-dependent.\n\n If you are only monitoring, start by confirming the pass prediction with a current orbital-data source and a satellite-tracking application. Orbital elements age; a pass prediction can be visibly wrong if the data are stale. Set the receiver to follow the downlink and keep the uplink disabled until you have verified the current schedule, mode and station authorisation. A broadband receiver or a waterfall display is particularly useful because it shows whether a signal is moving through the passband as expected.\n\n Satellite listening also benefits from a written pass plan. Record the pass start and end in UTC, maximum elevation, the antenna orientation required by your setup and any planned net-control instructions. Note whether the antenna is fixed, hand-pointed or rotatable. A fixed vertical antenna may hear a strong satellite briefly without providing a reliable picture of the entire pass. That limitation belongs in the report.\n\n Never transmit into the uplink simply because the downlink is audible. Uplink access may be coordinated, restricted or inappropriate for an unassigned listener. Follow the licence rules, the satellite’s operating guidance and ORARI’s instructions. If an emergency station asks for a report, use the exact information you can support: time, frequency, signal quality, your location and what was copied.\n\n ## Antenna and noise checks that improve useful reception\n\n A receive station is often limited by local electrical noise rather than by the radio’s sensitivity. Switching power supplies, LED lighting, network equipment, solar inverters, poorly filtered USB devices and battery chargers can raise the noise floor across a wide part of the HF spectrum. Do not assume that a new radio will solve an interference source located several metres away.\n\n Make a short noise survey before the watch. With the antenna connected, note the S-meter or spectrum floor at the operating frequency. Turn off one suspected household device at a time and record any change. Then repeat with the antenna disconnected only if the radio and manufacturer permit that configuration safely. The comparison distinguishes antenna-coupled noise from receiver or power-supply noise. Avoid touching exposed connectors or improvising a ground connection while equipment is energised.\n\n A practical temporary antenna should be mechanically secure, kept clear of power lines and installed according to local safety requirements. A wire thrown over a tree may be electrically effective but physically unsafe if it can fall onto a service line or walkway. For an indoor or balcony installation, accept that the noise floor and pattern may be poor and state that limitation in the log.\n\n Ferrite suppression, a short feed line, a common-mode choke and a separate clean power source can help, but each remedy has a different job. Ferrites do not magically tune an antenna. A choke can reduce common-mode current on a coax shield, but it cannot compensate for a badly located radiator. A power bank may lower conducted noise while introducing its own switching noise. Change one variable at a time and measure the result.\n\n Do not use an emergency operation as the moment to experiment with high power, unfamiliar tuners or an untested homebrew amplifier. Transmit only when authorised, within the applicable power and emission limits, and after confirming that the antenna system is safe and the control settings are understood.\n\n ## Logging: preserve evidence without creating a second incident\n\n The most useful log is chronological, restrained and reproducible. A minimum record contains UTC time, frequency, mode, station identifier, signal quality and a short description of the traffic. Add your location, antenna type, receiver and software version when you are collecting propagation or technical observations. If the log might be handed to a coordinator, keep the original file unchanged and make a separate copy for annotations.\n\n Separate three categories in the notes:\n\n - Directly heard or decoded: information received by your own station.\n- Reported by another operator: information that may be useful but has not been independently verified.\n- Interpretation: your explanation of what the traffic might mean.\n\n That separation prevents a guess from becoming a fact when the log is forwarded. Do not post unverified casualty numbers, locations, names or tactical details to a public group. Emergency traffic can contain personal information, and a public screenshot may expose more than the operator intended. If a coordinator requests a record, send the original technical details through the channel they specify.\n\n Screenshots are helpful when they show the time, frequency and waterfall context, but they can also reveal callsigns, message text and computer identifiers. Crop only after preserving the original securely. Do not alter the time or frequency display. If the computer clock was wrong, say so; do not silently correct the evidence.\n\n ## A small station checklist for the current activation\n\n Before monitoring:\n\n - Read the latest ORARI or IARU Region 3 announcement available to you.\n- Confirm that your local regulations permit reception, and separately confirm the rules before any transmission.\n- Check the radio, antenna, power supply and audio path during a non-emergency test.\n- Set the logging clock to UTC and record the actual software versions.\n- Prepare a paper backup log in case the computer, network or application fails.\n\n During monitoring:\n\n - Listen first and keep the emergency channels clear.\n- Use the exact mode and dial frequency specified by the current notice.\n- Record what you copied, not what you expected to hear.\n- Avoid repeated calls, confirmation transmissions and technical tests on the active channel.\n- Mark uncertain callsigns, incomplete messages and second-hand reports clearly.\n\n After monitoring:\n\n - Save the log and label the time zone.\n- Compare the station’s noise and propagation notes with later conditions, but do not rewrite the original record.\n- Report only through the requested coordination path.\n- Remove temporary antenna hardware safely and inspect cables for weather or mechanical damage.\n- Review one technical fault and one operating habit to improve before the next exercise.\n\n ## What this means for operators outside Indonesia\n\n The announcement is relevant internationally because stations elsewhere may hear the traffic and because emergency communications often depend on cooperation across borders. It does not give an operator outside Indonesia permission to transmit on a frequency that is not authorised in that operator’s jurisdiction. Even inside the same IARU region, national band plans, licence conditions and local emergency procedures can differ.\n\n For a listener in another country, the constructive contribution is usually modest: monitor when propagation makes reception possible, keep a factual UTC log, avoid calling into the operation, and be ready to respond to a direct request from an established coordinator. A report such as “heard an incomplete callsign at 17:03 UTC” is useful only when it is clearly labelled as incomplete. A confident reconstruction made from a callsign database is not a substitute for reception.\n\n This distinction is especially important for the satellite frequencies. A downlink can be heard far beyond the intended service area, while an uplink transmission may be heard by several stations and interfere with a coordinated exchange. The ability to hear a signal is not an invitation to transmit.\n\n ## The durable lesson: design for restraint\n\n The current ORARI activation is a timely reason to check a station, but the best lessons are not tied to a single date. Emergency-capable equipment is not defined by its price or by the number of modes installed. It is defined by whether the operator can put it on the correct frequency, hear what is happening, keep accurate time, communicate only when appropriate and document the result without adding confusion.\n\n A compact receive station with a known antenna, clean audio, a verified clock and a paper log may be all that is needed to support the first stage of an operation. Add digital decoding only after the radio and computer path are stable. Add satellite tracking only after the mode, pass schedule and local rules are clear. Treat every new connection, software update and antenna change as something to test away from the active emergency channel.\n\n For this September operation, the immediate action is straightforward: save the [ORARI/IARU Region 3 notice](https://www.wia.org.au/newsevents/news/2026/20260911-2/index.php), build a receive-only profile for the announced channels, verify your UTC logging and monitor with discipline. The value of the station will be measured less by how much it transmits than by how accurately it can hear, record and support the people coordinating the response.","available_translations":[{"language":"ar","title":"تفعيل ORARI للاتصالات الطارئة في سبتمبر: كيف تبني محطة استقبال منضبطة على 7.110 ميغاهرتز وJS8Call ومراقبة الأقمار الصناعية","html_url":"https://publicasta.com/ham_radio_diy_electronics/orari_emcomm_js8call_receive_station_september_2026?lang=ar","markdown_url":"https://publicasta.com/ham_radio_diy_electronics/orari_emcomm_js8call_receive_station_september_2026.md?lang=ar","json_url":"https://publicasta.com/ham_radio_diy_electronics/orari_emcomm_js8call_receive_station_september_2026.json?lang=ar","api_url":"https://publicasta.com/api/public/v1/channels/ham_radio_diy_electronics/articles/orari_emcomm_js8call_receive_station_september_2026?lang=ar"},{"language":"de","title":"ORARIs EMCOMM-Aktivierung im September: Eine disziplinierte Empfangsstation für 7,110 MHz, JS8Call und Satellitenbeobachtung","html_url":"https://publicasta.com/ham_radio_diy_electronics/orari_emcomm_js8call_receive_station_september_2026?lang=de","markdown_url":"https://publicasta.com/ham_radio_diy_electronics/orari_emcomm_js8call_receive_station_september_2026.md?lang=de","json_url":"https://publicasta.com/ham_radio_diy_electronics/orari_emcomm_js8call_receive_station_september_2026.json?lang=de","api_url":"https://publicasta.com/api/public/v1/channels/ham_radio_diy_electronics/articles/orari_emcomm_js8call_receive_station_september_2026?lang=de"},{"language":"en","title":"ORARI’s September EMCOMM activation: how to build a disciplined receive station for 7.110 MHz, JS8Call and satellite watch","html_url":"https://publicasta.com/ham_radio_diy_electronics/orari_emcomm_js8call_receive_station_september_2026?lang=en","markdown_url":"https://publicasta.com/ham_radio_diy_electronics/orari_emcomm_js8call_receive_station_september_2026.md?lang=en","json_url":"https://publicasta.com/ham_radio_diy_electronics/orari_emcomm_js8call_receive_station_september_2026.json?lang=en","api_url":"https://publicasta.com/api/public/v1/channels/ham_radio_diy_electronics/articles/orari_emcomm_js8call_receive_station_september_2026?lang=en"},{"language":"es","title":"Activación EMCOMM de ORARI en septiembre: cómo construir una estación de recepción disciplinada para 7.110 MHz, JS8Call y vigilancia satelital","html_url":"https://publicasta.com/ham_radio_diy_electronics/orari_emcomm_js8call_receive_station_september_2026?lang=es","markdown_url":"https://publicasta.com/ham_radio_diy_electronics/orari_emcomm_js8call_receive_station_september_2026.md?lang=es","json_url":"https://publicasta.com/ham_radio_diy_electronics/orari_emcomm_js8call_receive_station_september_2026.json?lang=es","api_url":"https://publicasta.com/api/public/v1/channels/ham_radio_diy_electronics/articles/orari_emcomm_js8call_receive_station_september_2026?lang=es"},{"language":"fr","title":"Activation EMCOMM d’ORARI en septembre : construire une station de réception disciplinée pour 7,110 MHz, JS8Call et la veille 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satelitarnego","html_url":"https://publicasta.com/ham_radio_diy_electronics/orari_emcomm_js8call_receive_station_september_2026?lang=pl","markdown_url":"https://publicasta.com/ham_radio_diy_electronics/orari_emcomm_js8call_receive_station_september_2026.md?lang=pl","json_url":"https://publicasta.com/ham_radio_diy_electronics/orari_emcomm_js8call_receive_station_september_2026.json?lang=pl","api_url":"https://publicasta.com/api/public/v1/channels/ham_radio_diy_electronics/articles/orari_emcomm_js8call_receive_station_september_2026?lang=pl"},{"language":"ru","title":"Сентябрьская EMCOMM-активация ORARI: как организовать дисциплинированный приём на 7,110 МГц, JS8Call и спутниковом 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