Changes for page LPS8v2 -- LoRaWAN Indoor Gateway User Manual
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... ... @@ -13,8 +13,12 @@ 13 13 {{toc/}} 14 14 15 15 16 + 17 + 18 + 16 16 = **1. Introduction** = 17 17 21 + 18 18 == **1.1 What is LPS8v2** == 19 19 20 20 ... ... @@ -50,8 +50,6 @@ 50 50 * RAM: 512MB 51 51 * eMMC: 4GB 52 52 53 - 54 - 55 55 (% style="color:#037691" %)**Interface:** 56 56 57 57 * 10M/100M RJ45 Ports x 1 ... ... @@ -58,8 +58,6 @@ 58 58 * Multi-Channel LoRaWAN Wireless 59 59 * WiFi 802.11 b/g/n 60 60 61 - 62 - 63 63 (% style="color:#037691" %)**Operating Condition:** 64 64 65 65 * Work Temperature: -20 ~~ 65°C ... ... @@ -66,10 +66,6 @@ 66 66 * Storage Temperature: -20 ~~ 65°C 67 67 * Power Input: 5V, 2A, DC 68 68 69 - 70 - 71 - 72 - 73 73 == **1.3 Features** == 74 74 75 75 ... ... @@ -88,10 +88,6 @@ 88 88 * Built-in (% style="color:#037691" %)//**The Things Network**//(%%) local LoRaWAN server 89 89 * Built-in (% style="color:#037691" %)//**Node-Red**// (%%)local Application server 90 90 91 - 92 - 93 - 94 - 95 95 == **1.4 Block Diagram** == 96 96 97 97 ... ... @@ -104,20 +104,37 @@ 104 104 105 105 (% style="color:blue" %)//**➢ Power LED**//(%%)//: This RED LED will be solid if the device is properly powered// 106 106 107 -(% style="color:blue" %)//**➢ LoRaLED**//(%%)//: This RGB LED will blink GREEN when theLoRaWANmodule startsor transmita packet//99 +(% style="color:blue" %)//**➢ ETH LED**//(%%)//: This RGB LED will blink GREEN when the ETH port is connecting// 108 108 109 -(% style="color:blue" %)//**➢ SYS LED**//(%%)//: This RGB LED will show different colors in different states~:// 101 +(% style="color:blue" %)//**➢ SYS LED**//(%%)//: This RGB LED will show different colors in different states~:// 110 110 111 -// ✓ **SOLID BLUE:** The device is alive with a LoRaWAN server connection.//103 +// ✓ **SOLID GREEN:** The device is alive with a LoRaWAN server connection.// 112 112 113 -// ✓ **BLINKING BLUE:** a) Device has internet connection but no LoRaWAN Connection. or b) Device is in booting stage, in this stage, it will BLINKINGBLUE for several seconds and then withSOLID RED andBLINKINGBLUE together//105 +// ✓ **BLINKING GREEN:** a) Device has internet connection but no LoRaWAN Connection. or b) Device is in booting stage, in this stage, it will BLINKING GREEN for several seconds and then with BLINKING GREEN together// 114 114 115 115 // ✓** SOLID RED:** Device doesn't have an Internet connection.// 116 116 117 -(% style="color:blue" %)//**➢ ETHLED**//(%%)//:ETHinterface connection status.//109 +(% style="color:blue" %)//**➢ WIFI LED**//(%%)//: This LED shows the WIFI interface connection status.// 118 118 119 119 120 120 113 +== **1.6 Button Intruction** == 114 + 115 + 116 +LPS8-V2 has a black toggle button, which is: 117 + 118 + 119 +(% style="color:blue" %)**//➢ //Long press 4-5s : **(%%)the gateway will reload the Network and Initialize wifi configuration 120 + 121 + // **LED status: ** ETH LED will BLINKIND BULE Until the reload is finished.// 122 + 123 + 124 +(% style="color:blue" %)//**➢ **//**Long press more than 10s:**(%%)** **//the gateway will restore the factory settings.// 125 + 126 + //**LED status: ** ETH LED will SOLID BULE Until the restore is finished.// 127 + 128 + 129 + 121 121 = **2. Quick Start** = 122 122 123 123 ... ... @@ -132,7 +132,6 @@ 132 132 133 133 == **2.1.1 connect the network.** == 134 134 135 -=== === 136 136 137 137 === (% style="color:blue" %)**Method 1**(%%): Connect via Ethernet with DHCP IP from the router === 138 138 ... ... @@ -155,27 +155,6 @@ 155 155 [[image:image-20220622100542-2.png||height="369" width="1256"]] 156 156 157 157 158 -((( 159 -The LPS8-V2 has a fall-back IP address on its WAN port. you have to access the gateway Web-UI to configure the WiFi connection via the fallback IP address. 160 -))) 161 - 162 - 163 - 164 -(% style="color:#037691" %)**Steps to connect via fallback IP:** 165 - 166 -~1. Connect PC's Ethernet port to LPS8-V2's WAN port 167 - 168 -2. Configure PC's Ethernet port has IP: 172.31.255.253 and Netmask: 255.255.255.252 169 - 170 -[[image:image-20220622101433-4.png]] 171 - 172 - 173 -and then On the PC, use the IP address **http:~/~/172.31.255.254** to access the LPS8-V2 via Web or Console. 174 - 175 - 176 -[[image:image-20220622102210-5.png||height="569" width="1039"]] 177 - 178 - 179 179 Fill in the WiFi information by checking the box and clicking (% style="color:red" %)**Save&Apply** 180 180 181 181 ... ... @@ -189,7 +189,7 @@ 189 189 [[image:image-20220622102847-7.png]] 190 190 191 191 192 -[[image:image-20220622102901-8.png||height=" 513" width="1011"]]179 +[[image:image-20220622102901-8.png||height="476" width="938"]] 193 193 194 194 195 195 ... ... @@ -199,20 +199,25 @@ 199 199 === **2.2.1 Select your area frequency** === 200 200 201 201 189 +((( 202 202 First, you need to set the frequency plan in LPS8-V2 to match the end node we use, so to receive the LoRaWAN packets from the LoRaWAN sensor. 203 203 204 -[[image:image-20220622103332-9.png]] 192 + 193 +))) 205 205 195 +[[image:image-20220622103332-9.png||height="485" width="938"]] 206 206 207 207 198 + 208 208 === **2.2.2 Get the only gateway EUI** === 209 209 210 210 211 211 Every LPS8-V2 has a unique gateway id. The ID can be found on LoRaWAN Semtech page: 212 212 213 -[[image:image-20220622103355-10.png]] 214 214 205 +[[image:image-20220622103355-10.png||height="698" width="949"]] 215 215 207 + 216 216 (% style="color:red" %)**Note: Choose the cluster that corresponds to a specific Gateway server address** 217 217 218 218 ... ... @@ -229,7 +229,7 @@ 229 229 230 230 231 231 232 -== 2.2.3 Register the gateway to The Things Network == 224 +== **2.2.3 Register the gateway to The Things Network** == 233 233 234 234 235 235 **Login to The Things Network** ... ... @@ -254,7 +254,10 @@ 254 254 255 255 //Shows the system running status~:// 256 256 249 +[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20All%20Gateway%20models/HP0C/WebHome/image-20220622102901-8.png?rev=1.1||alt="image-20220622102901-8.png" height="476" width="939"]] 257 257 251 + 252 + 258 258 == **3.2 LoRa Settings** == 259 259 260 260 ... ... @@ -265,18 +265,19 @@ 265 265 266 266 //Different LPS8v2 hardware versions can support different frequency ranges~:// 267 267 268 -* (% style="color:#0000ff" %)//**868**//(% style="color:black" %)//: valid frequency: 863Mhz ~~ 870Mhz. for bands EU868, RU864, IN865 or KZ865.// 263 +* (% style="color:#0000ff" %)//**868**//(% style="color:black" %)//: valid frequency: 863Mhz ~~ 870Mhz. for bands EU868, RU864, IN865, or KZ865.// 269 269 * (% style="color:#0000ff" %)//**915**//(% style="color:black" %)//: valid frequency: 902Mhz ~~ 928Mhz. for bands US915, AU915, AS923 or KR920// 270 270 271 271 (% class="wikigeneratedid" %) 272 272 //After the user choose the frequency plan, the user can see the actual frequency is used by checking the page (% style="color:#037691" %)**LogRead ~-~-> LoRa Log**// 273 273 269 + 274 274 (% class="wikigeneratedid" %) 275 275 [[image:image-20220616110739-1.png||height="372" width="682"]] 276 276 277 277 278 278 ((( 279 -(% style="color:red" %)//**Note *: See this instruction for how to customize the frequency band: **//(%%)**//__[[How to customized LoRaWAN frequency band - DRAGINO>> url:http://8.211.40.43/xwiki/bin/view/Main/How%20to%20customized%20LoRaWAN%20frequency%20band/]]__//**275 +(% style="color:red" %)//**Note *: See this instruction for how to customize the frequency band: **//(%%)**//__[[How to customized LoRaWAN frequency band - DRAGINO>>doc:Main.How to customized LoRaWAN frequency band.WebHome]]__//** 280 280 ))) 281 281 282 282 ... ... @@ -289,6 +289,7 @@ 289 289 290 290 //This page is for the connection set up to a general LoRaWAN Network server such as [[TTN>>url:http://www.thethingsnetwork.org/]], [[ChirpStack>>url:https://www.chirpstack.io/]], etc.// 291 291 288 + 292 292 [[image:image-20220616111932-2.png||height="516" width="672"]] 293 293 294 294 ... ... @@ -298,10 +298,13 @@ 298 298 299 299 //This page is for the connection set up to the TTN Basic Station, AWS-IoT, etc.// 300 300 298 + 301 301 [[image:image-20220616113246-3.png||height="396" width="672"]] 302 302 303 303 304 -Please see this instruction to know more detail and a demo for how to use of LoRaWAN Basic Station: __[[Use of LoRaWAN Basic Station - DRAGINO>>url:http://8.211.40.43/xwiki/bin/view/Main/Use%20of%20LoRaWAN%20Basic%20Station/]]__ 302 +((( 303 +Please see this instruction to know more detail and a demo for how to use of LoRaWAN Basic Station: __[[Use of LoRaWAN Basic Station - DRAGINO>>doc:Main.Use of LoRaWAN Basic Station.WebHome]]__ 304 +))) 305 305 306 306 307 307 ... ... @@ -318,7 +318,7 @@ 318 318 === **3.4.2 Network ~-~-> System Status** === 319 319 320 320 321 -[[image:image-20220 616115229-5.png||height="548" width="665"]]321 +[[image:image-20220820134112-2.png||height="539" width="668"]] 322 322 323 323 324 324 ... ... @@ -337,23 +337,47 @@ 337 337 338 338 Shows the system info: 339 339 340 +[[image:image-20220917144512-5.png||height="618" width="853"]] 340 340 341 341 343 + 342 342 === **3.5.2 System ~-~-> Backup/Restore** === 343 343 344 344 345 -[[image:image-20220 616115808-7.png||height="194" width="649"]]347 +[[image:image-20220917144725-6.png||height="208" width="869"]] 346 346 347 347 348 348 349 -= **4. Build-in LoRaWAN NetworkServer~-~- The Things Network - Stack (TTN-V3)** =351 += **4. Build-in Server** = 350 350 351 351 352 -The default factory version of LPS8-V2 is installed with the Built-in LoRaWAN Server: (% style="color:blue" %)**The Things Network - Stack (Open Source 3.19 Version).**354 +The default factory version of LPS8-V2 is installed with the built-in Applicant server: (% style="color:blue" %)**Node-Red, and**(%%) LoRaWAN Server: (% style="color:blue" %)**The Things Network - Stack (Open Source 3.19 Version).** 353 353 354 -You can access the gateway's built-in LNS server of **The Things Network - Stack **via the URL( (% style="background-color:yellow" %)__**//http:~/~/<hostname>:8080 or http:~/~/<local-IPV4-address> //**__(%%)) in your browser. 355 355 357 +[[image:image-20220820115644-1.png||height="217" width="778"]] 356 356 359 + 360 +(% style="color:red" %)**Note:** 361 + 362 + **Path**: System ~-~-> Built-in Server 363 + 364 + 365 +**Troubleshooting:** 366 + 367 + 368 +**~ 1. URL does not jump properly** 369 + 370 + For the ttn-stack, you can click the update the URL which will update the configuration where change the hostname to the current local IP address as the URL. 371 + 372 + For the Node-Red, you can use the local IP address and the port is 1880 to access it. 373 + 374 + 375 + 376 +== **4.1 LoRaWAN Network Server ~-~- The Things Network - Stack (TTN-V3)** == 377 + 378 + 379 +You can access the gateway's built-in LNS server of (% style="color:blue" %)**The Things Network - Stack **(%%)via the URL( (% style="background-color:yellow" %)__**//http:~/~/<hostname>:8080 or http:~/~/<local-IPV4-address> //**__(%%)) in your browser. 380 + 357 357 Such as (% style="background-color:yellow" %)__**//http:~/~/dragino-54ff12:8080 or http:~/~/<Local-IPV4-Address>//**__ 358 358 359 359 ... ... @@ -367,52 +367,194 @@ 367 367 [[image:image-20220725171719-1.png||height="570" width="769"]] 368 368 369 369 370 -(% style="color:red" %)**Note: A portion of the sample devices that were not installed with Node-Red. 371 - You can complete the installation manually with the following command.** 372 372 395 +== **4.2 Application Server ~-~- Node-Red** == 373 373 397 + 398 +You can access the gateway's built-in AS server of (% style="color:blue" %)**Node-Red **(%%)via the URL((% style="background-color:yellow" %)__**//http:~/~/<hostname>:1880 or http:~/~/<local-IPV4-address>//**__(%%)) in your browser. 399 + 400 + 401 +Such as (% style="background-color:yellow" %)__**//http:~/~/dragino-54ff12:1880 or http:~/~/<Local-IPV4-Address>//**__ 402 + 403 + 404 +[[image:image-20220725172124-3.png||height="610" width="843"]] 405 + 406 + 407 + 408 +=== **Using Node-Red, InfluxDB and Grafana,** === 409 + 410 +The LPS8-V2 supports this combination, the default, Node-red is pre-installed but the InfluxDB and Grafana is not pre-installed. 411 + 412 + 413 +the users can refer to this link to install them. 414 + 415 +[[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/Armbian%20OS%20instruction/#H2.6HowtoinstallGrafanaandinfluxdb>>http://wiki.dragino.com/xwiki/bin/view/Main/Armbian%20OS%20instruction/#H2.6HowtoinstallGrafanaandinfluxdb]] 416 + 417 + 418 += **5. How users can access LPS8v2 using serial USB** = 419 + 420 + 421 +(% style="color:blue" %)**USB TTL to LPS8v2 Connection:** 422 + 423 + 424 +Port 1 of the UART on the LPS8v2 is GND 425 + 374 374 (% class="box infomessage" %) 375 375 ((( 376 - (%class="mark"%)cd/tmp&& wget http:~/~/repo.dragino.com/release/tool/ttnstack/autoinstall_ttn-stack.sh428 +**TXD <~-~--> UART RXD (Gray line)** 377 377 378 -(% style="background-color:#fcf8e3" %)chmod +x /tmp/autoinstall_ttn-stack.sh && /tmp/autoinstall_ttn-stack.sh ttn-stack 430 +**RXD <~-~--> UART TXD (White line)** 431 + 432 +**GND <~-~--> GND (Black line)** 379 379 ))) 380 380 381 381 436 +**LPS8v2 UART connection photo** 382 382 383 - = **5. Build-in Application Server ~-~-Node-Red**=438 +[[image:image-20220804163015-1.png||height="621" width="466"]] 384 384 385 385 386 -The default factory version of LPS8-V2 is installed with the built-in Applicant server: (% style="color:blue" %)**Node-Red.** 387 387 388 - You canaccessthegateway'sbuilt-inASserverof **Node-Red**via theURL((% style="background-color:yellow" %)__**//http:~/~/<hostname>:8080orhttp:~/~/<local-IPV4-address>//**__(%%))inyourbrowser.442 +In the PC,you can use the serial port tool(such as [[putty>>url:http://www.chiark.greenend.org.uk/~~sgtatham/putty/download.html]] in Windows), you need to set the serial baud rate to (% style="color:blue" %)**115200**(%%) to access the serial console for LPS8v2. LPS8v2 will output system info once power on as below: 389 389 390 390 391 - Suchas (% style="background-color:yellow" %)__**//http:~/~/dragino-54ff12:8080or [[http:~~/~~/<Local-IPV4-Address~>>>http://<Local-IPV4-Address>]]//**__445 +[[image:image-20220804164928-3.png||height="320" width="332"]] 392 392 393 393 394 -[[image:image-20220 725172124-3.png||height="610" width="843"]]448 +[[image:image-20220804164747-2.png||height="622" width="594"]] 395 395 396 396 397 -(% style="color:red" %)**Note: A portion of the sample devices that were not installed with Node-Red. 398 - You can complete the installation manually with the following command.** 399 399 452 += **6. Use the helium gateway-rs as the Data-only Hotspot** = 400 400 401 401 455 +== **Step 1: Configure Frequency Band** == 456 + 457 + 458 +//Each country has a requirement for frequency region. Choose the right one for your area.// 459 + 460 +[[image:image-20220905164308-1.png]] 461 + 462 + 463 + 464 +== **Step 2: Configure the forward address** == 465 + 466 + 467 +**Select one of the servers to configure.** 468 + 469 +**For example:** 470 + 471 +[[image:image-20220905164847-2.png]] 472 + 473 + 474 + 475 +== **Step 3: Download and Install the Helium-gateway-rs** == 476 + 477 + 478 +**Access the gateway CLI via SSH.** 479 + 480 +[[image:image-20220905165222-3.png]] 481 + 482 + 483 +**Download gateway-rs.** 484 + 485 +[[image:image-20220905165715-5.png]] 486 + 402 402 (% class="box infomessage" %) 403 403 ((( 404 -(% class="mark" %)cd /tmp && wget http:~/~/repo.dragino.com/release/tool/nodered/autoinstall_nodered.sh 405 -chmod +x /tmp/autoinstall_nodered.sh && /tmp/autoinstall_nodered.sh node-red 489 +**Command: wget [[http:~~/~~/repo.dragino.com/release/tool/gateway-rs/helium-gateway-v1.0.0-alpha.31-raspi234.deb>>http://repo.dragino.com/release/tool/gateway-rs/helium-gateway-v1.0.0-alpha.31-raspi234.deb]]** 406 406 ))) 407 407 408 -[[image:image-20220728102000-1.png]] 409 409 493 +**Install gateway-rs.** 410 410 495 +[[image:image-20220905165917-7.png]] 411 411 412 -(% style="color:inherit; font-family:inherit; font-size:29px" %)**10. Supports** 497 +(% class="box infomessage" %) 498 +((( 499 +**Command: dpkg -i helium-gateway-v1.0.0-alpha.31-raspi234.deb ** 500 +))) 413 413 414 414 503 +**Modify configuration.** 504 + 505 + 506 +[[image:image-20220905173847-12.png]] 507 + 508 + 509 +(% class="box infomessage" %) 415 415 ((( 511 +**region=<Enter regional parameters> \ 512 +&& sed -i '/region/d' /etc/helium_gateway/settings.toml && sed -i "1 i\region = \"$region\"" /etc/helium_gateway/settings.toml \ 513 +&& sed -i '/region/d' /etc/helium_gateway/default.toml && sed -i "22 i\region = \"$region\"" /etc/helium_gateway/default.toml** 514 +))) 515 + 516 + 517 +**Restart the helium_gateway** 518 + 519 +[[image:image-20220905170920-9.png]] 520 + 521 + 522 +(% class="box infomessage" %) 523 +((( 524 +**systemctl restart helium_gateway** 525 +))) 526 + 527 + 528 +**Check the helium_gateway Log:** 529 + 530 +[[image:image-20220905173952-13.png]] 531 + 532 + 533 +(% class="box infomessage" %) 534 +((( 535 +**journalctl -u helium_gateway -f** 536 +))) 537 + 538 + 539 +(% style="color:red" %)**Note: if your device is not finished the onboarding, which is unable to connect to the Helium console.** 540 + 541 +where the helium gateway log is shown: 542 + 543 +[[image:image-20220905174534-14.png]] 544 + 545 + 546 +So you have to finish the onboarding, ~-~--Please refer to [[Step 2.7>>doc:Main.Notes for Helium.WebHome||anchor="H2.7A0Step6:OnboardingData-OnlyHotspot"]] to onboarding your LPS8-V2. 547 + 548 + 549 += **7. OTA System Update** = 550 + 551 + 552 +LPS8v2 supports system auto update via OTA, please see **[[this URL>>url:http://wiki.dragino.com/xwiki/bin/view/OTA%20Update/]]** for the detail of this feature. 553 + 554 + 555 += **8. Trouble Shooting** = 556 + 557 + 558 +== 8.1 I can't log in to the built-in Server TTN Stack which shows '**Login failed**'. == 559 + 560 + 561 +[[image:image-20220920135918-1.png]] 562 + 563 + 564 +This is caused by the inconsistency between the built-in TTN-Stack domain configuration and your login URL. 565 + 566 +By default, ttn-stack uses the gateway's domain name for URL resolution, but in some networks, they prefer to resolve IP-v4 addresses. 567 + 568 + 569 +So you can change the domain name of the TTN-Stack configuration to the IPv4 address. 570 + 571 +**Click the update URL button to configure the URL with the current eth port address.** 572 + 573 +[[image:image-20220920141936-2.png]] 574 + 575 + 576 + 577 + 578 += (% style="color:inherit; font-family:inherit; font-size:29px" %)**9. Supports**(%%) = 579 + 580 + 581 +((( 416 416 **//If you are experiencing issues and can't solve them, you can send mail to [[support@dragino.com>>mailto:support@dragino.com]].//** 417 417 ))) 418 418 ... ... @@ -421,15 +421,16 @@ 421 421 422 422 423 423 424 -= **1 1Reference** =590 += **10. Reference** = 425 425 426 426 427 427 * Install Tago Core: Refer **Install Tago Core in LPS8v2** in[[ Instruction>>doc:Main.Tago\.IO.WebHome]]. 594 +* [[Advance OS Reference Guide for LPS8v2>>doc:Main.Armbian OS instruction.WebHome]]. 428 428 429 429 430 430 ))) 431 431 432 -= **1 2. Order Info** =599 += **11. Order Info** = 433 433 434 434 435 435 (% style="color:#0000ff" %)**LPS8v2-XXX-YYY** ... ... @@ -443,7 +443,6 @@ 443 443 * (% style="color:red" %)**US915**(%%): LoRaWAN US915 band 444 444 * (% style="color:red" %)**IN865**(%%): LoRaWAN IN865 band 445 445 446 - 447 447 (% style="color:#0000ff" %)**YYY**(% style="color:black" %): 4G Cellular Option 448 448 449 449 * (% style="color:red" %)**E**(%%): EMEA, Korea, Thailand, India. ... ... @@ -455,7 +455,7 @@ 455 455 456 456 457 457 458 -= **1 3. Manufacturer Info** =624 += **12. Manufacturer Info** = 459 459 460 460 461 461 **Shenzhen Dragino Technology Development co. LTD** ... ... @@ -466,22 +466,38 @@ 466 466 467 467 468 468 469 -= **1 4. FCC Warning** =635 += **13. FCC Warning** = 470 470 471 471 638 +((( 472 472 This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: 640 +))) 473 473 642 +((( 474 474 ~-~- Reorient or relocate the receiving antenna. 644 +))) 475 475 646 +((( 476 476 ~-~- Increase the separation between the equipment and receiver. 648 +))) 477 477 650 +((( 478 478 ~-~- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. 652 +))) 479 479 654 +((( 480 480 ~-~- Consult the dealer or an experienced radio/TV technician for help. 656 +))) 481 481 482 482 659 +((( 483 483 Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. 661 +))) 484 484 485 485 664 +((( 486 486 The antenna(s) used for this transmitter must be installed to provide a separation distance of at least 20 cm from all persons and must not be co-located or operating in conjunction with any other antenna or transmitter. 666 + 667 + 487 487 ))) 669 +)))
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