CHATFIELD
ChatField develops LoRa mesh off-grid communication products for professional teams working beyond dependable cellular and Wi-Fi coverage. J28 is the primary integrated-display prototype, while J25 remains the current phone-paired product.
The product portfolio is intentionally separated by commercial status. J28 is the primary product presented for B2B evaluation and product-development inquiries. J25 remains the current device available for sample evaluation, quotation and orders.
This page helps procurement teams choose the correct product path, review model-specific evidence and understand what must be confirmed before payment or ordering.
PRODUCT STATUS
Current product and prototype-stage evaluation are shown separately.
ChatField J28
Next-generation smart LoRa mesh device prototype shown separately from the current J25 commercial path. Kickstarter campaign preparation is underway; the verified campaign link and launch timing will be published after confirmation.
- B2B project and evaluation inquiries are accepted
- No public price, cart or online checkout
- Final configuration, certification and timing remain unconfirmed
- J25 documents and specifications do not apply to J28
ChatField J25
Phone-paired LoRa mesh communication device for sample evaluation, commercial quotation and project discussion.
- Smartphone interface over Bluetooth Low Energy
- Local LoRa communication between participating J25 terminals
- PTT, text and voice messages, offline maps and team location
- Ideal open-terrain range up to 10 km
- Urban-obstructed field-test result around 5 km
- Up to two participating relay nodes where layout permits
- FCC-tested U.S. radio evidence available for review
J25 · PHONE-PAIRED MESH COMMUNICATION
The phone is the interface; J25 is the carried radio terminal.
J25 is not presented as a conventional walkie-talkie held in front of the user. Each equipped teammate carries a J25 and operates PTT, messages, offline maps and team-location functions through the paired smartphone.
For buyer planning, J25 should be evaluated as a no-cell-service communication device with direct LoRa paths, local mesh relay behavior, ideal open-terrain range up to 10 km and around 5 km urban-obstructed field-test checks.
- 01Phone appUser interface for PTT, messages, maps and team location
- 02Bluetooth LELocal connection between the smartphone and paired J25
- 03Carried J25LoRa radio terminal assigned to each equipped teammate
- 04Local LoRa meshParticipating J25 terminals exchange information and may use up to two relay nodes where the configured team layout permits
- 05Teammate’s phoneReceiving J25 passes information to the paired smartphone
BUYER-RELEVANT FUNCTIONS
Evaluate the workflows your team actually needs.
Local group voice
Define the teams and groups that require push-to-talk communication.
Text and voice messages
Exchange concise operational information without relying on cellular data.
Team location
Review how reported positions appear for participating teammates.
Offline maps
Prepare required map data before leaving dependable internet access.
Team SOS workflow
Define the internal acknowledgement and escalation process for equipped personnel.
Another local path
When configuration and field layout allow it, up to two participating J25 relay nodes may support another mesh path.
J25 · U.S. RADIO EVIDENCE
Review FCC-tested values separately from commercial configuration.
The following values come from the referenced J25 FCC Grant and FCC Part 15C reports. Operating range, relay-node layout, battery option, enclosure, accessories and other commercial details remain quotation- and sample-controlled.
- Model
- J25
- FCC ID
- 2BVP9-J25
- LoRa test scope
- 903–927.5 MHz · FCC Part 15C
- Bluetooth LE test scope
- 2402–2480 MHz · FCC Part 15C
- Referenced reports
- psi2603196-C01-R02 · psi2603196-C01-R01
- Grant date
- June 4, 2026
PRODUCT DOCUMENTS
Put the current PDF and compliance route beside the product decision.
Use the model-specific files below when preparing an internal review. Confirm document revision, proposed configuration and destination market before approval.
SAMPLE + COMMERCIAL PATH
Move from field problem to approved payment.
- Define the project.Destination market, use case, team size, route, required functions and expected quantity.
- Confirm the product path.Use J25 for the current sample and quotation process; treat J28 as a separate prototype-stage B2B evaluation.
- Align the sample configuration.App build, radio configuration, device quantity, accessories, packaging and required documents.
- Issue the quotation.Confirm sample amount, shipping, taxes or duties, lead time and any customization scope.
- Use the approved payment path.Pay only the amount linked to the confirmed quotation or Shopify product configuration.
- Evaluate and scale.Run the agreed field test, record results and finalize the bulk-order or OEM/ODM discussion.
PAYMENT READINESS
Online checkout follows the approved product and amount.
The theme supports Shopify cart and checkout. A live J25 payment button requires an approved product record, currency, price, inventory or sales policy and shipping scope.
Confirmed before payment
- Sample fee, deposit or full-unit payment type
- USD amount and included quantity
- Shipping destination, freight terms and document scope
Why no invented price appears here
- B2B configuration and destination market can change the quotation
- J25 commercial details must match the approved sample or order
- Checkout should not collect an amount that has not been authorized
Product portfolio boundaries
What is clear now
- J25 is the current phone-paired LoRa mesh product path
- FCC-tested J25 radio values and product PDF are available for review
- Samples and B2B quotations begin with the destination market and field problem
What buyers should not assume
- A J28 physical prototype is not proof of commercial availability
- Ideal open-terrain range up to 10 km and urban-obstructed field-test result around 5 km are J25 references and do not apply to J28
- No final J28 range, battery or configuration is published
- No J28 price or payment amount is valid until confirmed in a written proposal
ChatField product questions
Which ChatField product is available for sample evaluation?
J25 is the current phone-paired LoRa mesh communication device for sample evaluation, quotation and commercial discussion. The exact supplied configuration must be confirmed against the current quotation and documents.
Is ChatField J28 commercially available?
No commercial availability is claimed on this page. J28 is presented at the physical-prototype stage for B2B project and evaluation inquiries. There is no public price, cart or online checkout, and its final configuration, certification and timing must be confirmed directly with ChatField.
How does J25 work with a smartphone?
The smartphone remains the interface for PTT, text and voice messages, offline maps and team location. Bluetooth connects the phone to the carried J25, while participating J25 terminals provide the local LoRa mesh communication layer.
What range should buyers use for J25 planning?
Use up to 10 km only for ideal open terrain such as plains, open line-of-sight routes or areas with limited hills. For urban-obstructed procurement trials, use around 5 km as the tested reference distance and verify whether up to two participating relay nodes are useful on the actual route.
What FCC evidence is available for J25?
J25 FCC material identifies FCC ID 2BVP9-J25 and FCC Part 15C reports for LoRa operation at 903–927.5 MHz and Bluetooth Low Energy at 2402–2480 MHz.
How does sample payment work?
Pricing is quotation-controlled. After the destination market, configuration, sample quantity, shipping and document scope are confirmed, ChatField can issue the approved amount and payment path. No price should be assumed from this overview page.
J25 RANGE AND RELAY PLANNING