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Last modified by Xiaoling on 2023/07/18 10:12
From version 261.5
edited by Xiaoling
on 2023/07/17 16:18
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To version 252.22
edited by Xiaoling
on 2023/06/19 17:19
Change comment: There is no comment for this version

Summary

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Title
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1 -LHT65N -- Manual do sensor de temperatura e umidade LoRaWAN
1 +LHT65N LoRaWAN Temperature & Humidity Sensor Manual
Parent
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1 -Main.User Manual for LoRaWAN End Nodes.WebHome
1 +Main.WebHome
Content
... ... @@ -1,8 +1,10 @@
1 1  (% style="text-align:center" %)
2 -[[image:image-20230717152014-10.png||height="575" width="339"]]
2 +[[image:image-20220613162008-1.png||_mstalt="428142" height="510" width="334"]]
3 3  
4 4  
5 5  
6 +
7 +
6 6  **Table of Contents:**
7 7  
8 8  {{toc/}}
... ... @@ -11,104 +11,108 @@
11 11  
12 12  
13 13  
14 -= 1. Introdução =
16 += 1. Introduction =
15 15  
16 -== 1.1 O que é LHT65N LoRaWAN Temperatura & Umidade Sensor ==
18 +== 1.1 What is LHT65N Temperature & Humidity Sensor ==
17 17  
18 18  
19 19  (((
20 -O sensor de temperatura e umidade Dragino LHT65N é um sensor LoRaWAN de longo alcance. Inclui um sensor de temperatura e umidade embutido e tem um conector de sensor externo para conectar a um sensor de temperatura externo.
22 +The Dragino LHT65N Temperature & Humidity sensor is a Long Range LoRaWAN Sensor. It includes a (% style="color:#4f81bd" %)**built-in Temperature & Humidity sensor**(%%) and has an external sensor connector to connect to an external (% style="color:#4f81bd" %)**Temperature Sensor.**
23 +)))
21 21  
25 +(((
26 +The LHT65N allows users to send data and reach extremely long ranges. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption. It targets professional wireless sensor network applications such as irrigation systems, smart metering, smart cities, building automation, and so on.
27 +)))
22 22  
23 -O LHT65N permite que os usuários enviem dados e alcancem distâncias extremamente longas. Fornece comunicação de espectro de propagação de ultra-longo alcance e alta imunidade à interferência, minimizando o consumo atual. Ele visa aplicações profissionais de rede de sensores sem fio, como sistemas de irrigação, medição inteligente, cidades inteligentes, automação de edifícios e assim por diante.
29 +(((
30 +LHT65N has a built-in 2400mAh non-chargeable battery which can be used for up to 10 years*.
31 +)))
24 24  
33 +(((
34 +LHT65N is full compatible with LoRaWAN v1.0.3 Class A protocol, it can work with a standard LoRaWAN gateway.
35 +)))
25 25  
26 -LHT65N tem uma bateria embutida de 2400mAh não recarregável que pode ser usada por até 10 anos*.
37 +(((
38 +LHT65N supports (% style="color:#4f81bd" %)**Datalog Feature**(%%). It will record the data when there is no network coverage and users can retrieve the sensor value later to ensure no miss for every sensor reading.
39 +)))
27 27  
28 -
29 -LHT65N é totalmente compatível com o protocolo LoRaWAN v1.0.3 Classe A, ele pode trabalhar com um gateway LoRaWAN padrão.
30 -
31 -
32 -O LHT65N suporta a funcionalidade Datalog. Ele registrará os dados quando não houver cobertura de rede e os usuários podem recuperar o valor do sensor mais tarde para garantir que não haja perda para cada leitura do sensor.
33 -
34 -
35 -~* A vida real da bateria depende de quantas vezes enviar dados, consulte o capítulo do analisador da bateria.
41 +(((
42 +*The actual battery life depends on how often to send data, please see the battery analyzer chapter.
36 36  )))
37 37  
38 38  
39 -== 1.2 Características ==
46 +== 1.2 Features ==
40 40  
41 41  
42 -* Protocolo LoRaWAN v1.0.3 Classe A
43 -* Bandas de frequência: CN470/EU433/KR920/US915/EU868/AS923/AU915
44 -* Comandos AT para alterar os parâmetros
45 -* Parâmetros de configuração remota via LoRaWAN Downlink
46 -* Firmware atualizável através da porta do programa
47 -* Built-in 2400mAh bateria para até 10 anos de uso.
48 -* Built-in sensor de temperatura e umidade
49 -* Sensores externos opcionais
50 -* LED de três cores para indicar o estado de funcionamento
51 -* Recurso de registo de dados (máximo de 3328 registos)
49 +* LoRaWAN v1.0.3 Class A protocol
50 +* Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915
51 +* AT Commands to change parameters
52 +* Remote configure parameters via LoRaWAN Downlink
53 +* Firmware upgradeable via program port
54 +* Built-in 2400mAh battery for up to 10 years of use.
55 +* Built-in Temperature & Humidity sensor
56 +* Optional External Sensors
57 +* Tri-color LED to indicate working status
58 +* Datalog feature (Max 3328 records)
52 52  
60 +== 1.3 Specification ==
53 53  
54 -== 1.3 Especificação ==
55 55  
63 +(% style="color:#037691" %)**Built-in Temperature Sensor:**
56 56  
57 -(% style="color:#037691" %)**Sensor de temperatura incorporado:**
65 +* Resolution: 0.01 °C
66 +* Accuracy Tolerance : Typ ±0.3 °C
67 +* Long Term Drift: < 0.02 °C/yr
68 +* Operating Range: -40 ~~ 85 °C
58 58  
59 -* Resolução: 0,01 °C
60 -* Tolerância de precisão: Tipo ± 0,3 °C
61 -* Deriva a longo prazo: < 0,02 °C/ano
62 -* Faixa de operação: -40 ~~ 85 °C
70 +(% style="color:#037691" %)**Built-in Humidity Sensor:**
63 63  
64 -(% style="color:#037691" %)**Sensor de humidade incorporado:**
72 +* Resolution: 0.04 %RH
73 +* Accuracy Tolerance : Typ ±3 %RH
74 +* Long Term Drift: < 0.02 °C/yr
75 +* Operating Range: 0 ~~ 96 %RH
65 65  
66 -* Resolução: 0,04%UR
67 -* Tolerância da precisão: Tipo ±3%RH
68 -* Deriva a longo prazo: < 0,02 °C/ano
69 -* Faixa de operação: 0 ~~ 96%RH
77 +(% style="color:#037691" %)**External Temperature Sensor:**
70 70  
71 -(% style="color:#037691" %)**Sensor de temperatura externo:**
79 +* Resolution: 0.0625 °C
80 +* ±0.5°C accuracy from -10°C to +85°C
81 +* ±2°C accuracy from -55°C to +125°C
82 +* Operating Range: -55 °C ~~ 125 °C
72 72  
73 -* Resolução: 0,0625 °C
74 -* ±0,5°C precisão de -10°C a +85°C
75 -* ±2°C precisão de -55°C a +125°C
76 -* Faixa de operação: -55 °C ~~ 125 °C
84 += 2. Connect LHT65N to IoT Server =
77 77  
86 +== 2.1 How does LHT65N work? ==
78 78  
79 -= 2. Conecte LHT65N ao servidor IoT =
80 80  
81 -== 2.1 Como funciona o LHT65N? ==
82 -
83 -
84 84  (((
85 -O LHT65N é configurado como o modo LoRaWAN OTAA Classe A por padrão. Cada LHT65N é enviado com um conjunto único mundial de chaves OTAA. Para usar o LHT65N em uma rede LoRaWAN, primeiro, precisamos colocar as chaves OTAA no LoRaWAN Network Server e, em seguida, ativar o LHT65N.
90 +LHT65N is configured as LoRaWAN OTAA Class A mode by default. Each LHT65N is shipped with a worldwide unique set of OTAA keys. To use LHT65N in a LoRaWAN network, first, we need to put the OTAA keys in LoRaWAN Network Server and then activate LHT65N.
91 +)))
86 86  
87 -
88 -Se o LHT65N estiver sob a cobertura desta rede LoRaWAN. LHT65N pode entrar na rede LoRaWAN automaticamente. Depois de ingressar com sucesso, o LHT65N começará a medir a temperatura e umidade do ambiente e começará a transmitir dados do sensor para o servidor LoRaWAN. O período padrão para cada uplink é de 20 minutos.
93 +(((
94 +If LHT65N is under the coverage of this LoRaWAN network. LHT65N can join the LoRaWAN network automatically. After successfully joining, LHT65N will start to measure environment temperature and humidity, and start to transmit sensor data to the LoRaWAN server. The default period for each uplink is 20 minutes.
89 89  )))
90 90  
91 91  
92 -== 2. 2 Como ativar o LHT65N? ==
98 +== 2.2 How to Activate LHT65N? ==
93 93  
94 94  
95 95  (((
96 -O LHT65N tem dois modos de trabalho:
102 +The LHT65N has two working modes:
97 97  )))
98 98  
99 99  * (((
100 -(% style="color:blue" %)**Modo de Suspensão Profunda:**(%%) LHT65N não tem nenhuma ativação LoRaWAN. Este modo é usado para armazenamento e transporte para economizar a vida útil da bateria.
106 +(% style="color:blue" %)**Deep Sleep Mode**(%%): LHT65N doesn't have any LoRaWAN activation. This mode is used for storage and shipping to save battery life.
101 101  )))
102 102  * (((
103 -(% style="color:blue" %)**Modo de Trabalho:**(%%) Neste modo, o LHT65N funciona como o modo Sensor LoRaWAN para entrar na rede LoRaWAN e enviar os dados do sensor para o servidor. Entre cada amostragem/tx/rx periodicamente, LHT65N estará no modo STOP (modo IDLE), no modo STOP, LHT65N tem o mesmo consumo de energia que o modo Deep Sleep.
109 +(% style="color:blue" %)**Working Mode**(%%):  In this mode, LHT65N works as LoRaWAN Sensor mode to Join LoRaWAN network and send out the sensor data to the server. Between each sampling/tx/rx periodically, LHT65N will be in STOP mode (IDLE mode), in STOP mode, LHT65N has the same power consumption as Deep Sleep mode. 
104 104  )))
105 105  
106 106  (((
107 -O LHT65N é definido no modo de sono profundo por padrão; O botão ACT na frente é para alternar para diferentes modos:
113 +The LHT65N is set in deep sleep mode by default; The ACT button on the front is to switch to different modes:
108 108  )))
109 109  
110 110  
111 -[[image:image-20230717144740-2.png||height="391" width="267"]]
117 +[[image:image-20220515123819-1.png||_mstalt="430742" height="379" width="317"]]
112 112  
113 113  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
114 114  |=(% style="width: 167px;background-color:#D9E2F3;color:#0070C0" %)**Behavior on ACT**|=(% style="width: 117px;background-color:#D9E2F3;color:#0070C0" %)**Function**|=(% style="width: 225px;background-color:#D9E2F3;color:#0070C0" %)**Action**
... ... @@ -236,7 +236,6 @@
236 236  
237 237  * The 8^^th^^ ~~ 11^^th^^ byte: the value for external sensor value. The definition is based on external sensor type. (If EXT=0, there won't be these four bytes.)
238 238  
239 -
240 240  === 2.4.1 Decoder in TTN V3 ===
241 241  
242 242  
... ... @@ -279,7 +279,6 @@
279 279  
280 280  * Battery Voltage =0xCBA4&0x3FFF=0x0BA4=2980mV
281 281  
282 -
283 283  === 2.4.3 Built-in Temperature ===
284 284  
285 285  
... ... @@ -289,21 +289,15 @@
289 289  
290 290  [[image:image-20220522235639-3.png||_mstalt="432120"]]
291 291  
292 -* Temperature:  (0xF5C6-65536)/100=-26.18℃
296 +* Temperature:  (0xF5C6-65536)/100=-26.18℃(% style="display:none" %)
293 293  
294 -
295 -(% style="display:none" %)
296 -
297 297  === 2.4.4 Built-in Humidity ===
298 298  
299 299  
300 300  [[image:image-20220522235639-4.png||_mstalt="432484" height="138" width="722"]]
301 301  
302 -* Humidity:    0x025C/10=60.4%
303 +* Humidity:    0x025C/10=60.4%(% style="display:none" %)
303 303  
304 -
305 -(% style="display:none" %)
306 -
307 307  === 2.4.5 Ext # ===
308 308  
309 309  
... ... @@ -350,6 +350,7 @@
350 350  Timestamp mode is designed for LHT65N with E3 probe, it will send the uplink payload with Unix timestamp. With the limitation of 11 bytes (max distance of AU915/US915/AS923 band), the time stamp mode will be lack of BAT voltage field, instead, it shows the battery status. The payload is as below:
351 351  )))
352 352  
351 +
353 353  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:480px" %)
354 354  |=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)(((
355 355  **Size(bytes)**
... ... @@ -402,7 +402,6 @@
402 402  * (% style="color:blue" %)**Sync time OK**: (%%) 1: Set time ok，0: N/A. After time SYNC request is sent, LHT65N will set this bit to 0 until got the time stamp from the application server.
403 403  * (% style="color:blue" %)**Unix Time Request**:(%%)  1: Request server downlink Unix time, 0 : N/A. In this mode, LHT65N will set this bit to 1 every 10 days to request a time SYNC. (AT+SYNCMOD to set this)
404 404  
405 -
406 406  ==== 2.4.6.3 Ext~=6, ADC Sensor(use with E2 Cable) ====
407 407  
408 408  
... ... @@ -452,30 +452,28 @@
452 452  
453 453  
454 454  
455 -==== 2.4.6.4 Ext~=2 TMP117 Sensor((% style="display:none" %) (%%)Since Firmware v1.3)(% style="display:none" %) (%%) ====
453 +==== 2.4.6.4 Ext~=2 TMP117 Sensor(Since Firmware v1.3) ====
456 456  
457 -[[image:image-20230717151328-8.png]]
458 458  
459 -(% style="display:none" %) (%%)
456 +[[image:image-20220927095645-1.png||_mstalt="433771" height="534" width="460"]]
460 460  
461 461  
462 -
463 463  (% style="color:blue" %)**Ext=2,Temperature Sensor(TMP117)：**
464 464  
465 465  [[image:image-20220906102307-7.png||_mstalt="430443"]]
466 466  
467 467  
468 -(% style="color:blue" %)**Interrupt Mode and Counting Mode:**(% style="color:blue; display:none" %)** **
464 +(% style="color:blue" %)**Interrupt Mode and Counting Mode:**
469 469  
470 470  The external cable NE2 can be use for MOD4 and MOD8
471 471  
472 472  
473 473  
474 -==== 2.4.6.5 Ext~=11 SHT31 Sensor ((% style="display:none" %) (%%)Since Firmware v1.4.1) ====
470 +==== 2.4.6.5 Ext~=11 SHT31 Sensor (Since Firmware v1.4.1) ====
475 475  
476 476  
473 +[[image:65N-E31F.jpg||height="454" width="459"]]
477 477  
478 -[[image:image-20230717151245-7.png]]
479 479  
480 480  (% style="color:blue" %)**Ext=11,Temperature & Humidity Sensor(SHT31)：**
481 481  
... ... @@ -588,6 +588,7 @@
588 588  Timestamp mode is designed for LHT65N with E2 probe, it will send the uplink payload with Unix timestamp. With the limitation of 11 bytes (max distance of AU915/US915/AS923 band), the time stamp mode will be lack of BAT voltage field, instead, it shows the battery status. The payload is as below:
589 589  )))
590 590  
587 +
591 591  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:480px" %)
592 592  |=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)(((
593 593  **Size(bytes)**
... ... @@ -640,7 +640,6 @@
640 640  * (% style="color:blue" %)**Sync time OK**: (%%) 1: Set time ok, 0: N/A. After time SYNC request is sent, LHT65N will set this bit to 0 until got the time stamp from the application server.
641 641  * (% style="color:blue" %)**Unix Time Request**:(%%)  1: Request server downlink Unix time, 0 : N/A. In this mode, LHT65N will set this bit to 1 every 10 days to request a time SYNC. (AT+SYNCMOD to set this)
642 642  
643 -
644 644  == 2.5 Show data on Datacake ==
645 645  
646 646  
... ... @@ -771,7 +771,7 @@
771 771  User can poll sensor value based on timestamps from the server. Below is the downlink command.
772 772  
773 773  (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:428px" %)
774 -|(% style="background-color:#d9e2f3; color:#0070c0; width:58px" %)**1byte**|(% style="background-color:#d9e2f3; color:#0070c0; width:128px" %)**4bytes**|(% style="background-color:#d9e2f3; color:#0070c0; width:123px" %)**4bytes**|(% style="background-color:#d9e2f3; color:#0070c0; width:116px" %)**1byte**
770 +|(% style="width:58px;background-color:#D9E2F3;color:#0070C0" %)**1byte**|(% style="width:128px;background-color:#D9E2F3;color:#0070C0" %)**4bytes**|(% style="width:123px;background-color:#D9E2F3;color:#0070C0" %)**4bytes**|(% style="width:116px;background-color:#D9E2F3;color:#0070C0" %)**1byte**
775 775  |(% style="width:58px" %)31|(% style="width:128px" %)Timestamp start|(% style="width:123px" %)Timestamp end|(% style="width:116px" %)Uplink Interval
776 776  
777 777  Timestamp start and Timestamp end use Unix TimeStamp format as mentioned above. Devices will reply with all data log during this time period, use the uplink interval.
... ... @@ -1057,7 +1057,6 @@
1057 1057  * RED LED when external sensor is not connected
1058 1058  * For each success downlink, the PURPLE LED will blink once
1059 1059  
1060 -
1061 1061  == 2.9 installation ==
1062 1062  
1063 1063  
... ... @@ -1113,12 +1113,11 @@
1113 1113  == 3.3 E31F Temperature Probe ==
1114 1114  
1115 1115  
1116 -[[image:65N-E31F-1.jpg||height="169" width="170"]] [[image:image-20230717151424-9.png||height="221" width="204"]](% style="display:none" %)
1111 +[[image:65N-E31F-1.jpg||height="169" width="170"]] [[image:65N-E31F.jpg||height="196" width="198"]]
1117 1117  
1118 1118  
1119 1119  Temperature sensor with 1 meters cable long
1120 1120  
1121 -
1122 1122  **Built-in Temperature Sensor:**
1123 1123  
1124 1124  * Resolution: 0.01 °C
... ... @@ -1147,7 +1147,6 @@
1147 1147  * Long Term Drift: < 0.02 °C/yr
1148 1148  * Operating Range: 0 ~~ 96 % RH
1149 1149  
1150 -
1151 1151  = 4. Configure LHT65N via AT command or LoRaWAN downlink =
1152 1152  
1153 1153  
... ... @@ -1219,13 +1219,17 @@
1219 1219  * **Example 2**: Downlink Payload: 0100003C  ~/~/ Set Transmit Interval (TDC) = 60 seconds
1220 1220  
1221 1221  
1215 +
1216 +
1222 1222  == 4.2 Set External Sensor Mode ==
1223 1223  
1224 1224  
1225 1225  Feature: Change External Sensor Mode.
1226 1226  
1222 +
1227 1227  (% style="color:#4f81bd" %)**AT Command: AT+EXT**
1228 1228  
1225 +
1229 1229  (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:468px" %)
1230 1230  |(% style="background-color:#d9e2f3; color:#0070c0; width:155px" %)**Command Example**|(% style="background-color:#d9e2f3; color:#0070c0; width:153px" %)**Function**|(% style="background-color:#d9e2f3; color:#0070c0; width:160px" %)**Response**
1231 1231  |(% style="width:155px" %)AT+EXT=?|(% style="width:151px" %)Get current external sensor mode|(% style="width:158px" %)1 OK External Sensor mode =1
... ... @@ -1245,6 +1245,8 @@
1245 1245  * 0xA20702003c: Same as AT+SETCNT=60
1246 1246  
1247 1247  
1245 +
1246 +
1248 1248  == 4.3 Enable/Disable uplink Temperature probe ID ==
1249 1249  
1250 1250  
... ... @@ -1277,6 +1277,8 @@
1277 1277  * **0xA801**     **~-~->** AT+PID=1
1278 1278  
1279 1279  
1279 +
1280 +
1280 1280  == 4.4 Set Password ==
1281 1281  
1282 1282  
... ... @@ -1337,6 +1337,8 @@
1337 1337  * There is no downlink command to set to Sleep mode.
1338 1338  
1339 1339  
1341 +
1342 +
1340 1340  == 4.7 Set system time ==
1341 1341  
1342 1342  
... ... @@ -1405,6 +1405,7 @@
1405 1405  
1406 1406  [[image:image-20230426164330-2.png]]
1407 1407  
1411 +
1408 1408  (% style="color:#4f81bd" %)**Downlink Command:**
1409 1409  
1410 1410  No downlink commands for feature
... ... @@ -1419,6 +1419,7 @@
1419 1419  
1420 1420  [[image:image-20230426164932-3.png]]
1421 1421  
1426 +
1422 1422  (% style="color:#4f81bd" %)**Downlink Command:**
1423 1423  
1424 1424  No downlink commands for feature
... ... @@ -1429,8 +1429,10 @@
1429 1429  
1430 1430  Feature: Clear flash storage for data log feature.
1431 1431  
1437 +
1432 1432  (% style="color:#4f81bd" %)**AT Command: AT+CLRDTA**
1433 1433  
1440 +
1434 1434  (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:503px" %)
1435 1435  |(% style="background-color:#d9e2f3; color:#0070c0; width:157px" %)**Command Example**|(% style="background-color:#d9e2f3; color:#0070c0; width:137px" %)**Function**|(% style="background-color:#d9e2f3; color:#0070c0; width:209px" %)**Response**
1436 1436  |(% style="width:155px" %)AT+CLRDTA |(% style="width:134px" %)Clear date record|(% style="width:209px" %)(((
... ... @@ -1444,6 +1444,8 @@
1444 1444  * Example: 0xA301  ~/~/  Same as AT+CLRDTA
1445 1445  
1446 1446  
1454 +
1455 +
1447 1447  == 4.13 Auto Send None-ACK messages ==
1448 1448  
1449 1449  
... ... @@ -1462,6 +1462,8 @@
1462 1462  * Example: 0x3401  ~/~/  Same as AT+PNACKMD=1
1463 1463  
1464 1464  
1474 +
1475 +
1465 1465  == 4.14 Modified WMOD command for external sensor TMP117 or DS18B20 temperature alarm(Since firmware 1.3.0) ==
1466 1466  
1467 1467  
... ... @@ -1572,8 +1572,6 @@
1572 1572  * (% style="background-color:yellow" %)**USB to TTL TXD <~-~-> A11**
1573 1573  
1574 1574  (((
1575 -(% _mstmutation="1" style="color:red" %)**(Note: This pin only corresponds to the lead-out board sold by dragino company. For the lead-out board purchased by yourself, please refer to the pin description in Chapter 6.6)**
1576 -
1577 1577  In PC, User needs to set serial tool(such as [[**putty**>>https://www.chiark.greenend.org.uk/~~sgtatham/putty/latest.html]], SecureCRT) baud rate to (% style="color:green" %)**9600**(%%) to access to access serial console for LHT65N. The AT commands are disable by default and need to enter password (default:(% style="color:green" %)**123456**) (%%)to active it. Timeout to input AT Command is 5 min, after 5-minute, user need to input password again. User can use AT+DISAT command to disable AT command before timeout.
1578 1578  )))
1579 1579  
... ... @@ -1908,7 +1908,6 @@
1908 1908  
1909 1909  * (% style="color:red" %)**E3**(%%): External Temperature Probe
1910 1910  
1911 -
1912 1912  = 8. Packing Info =
1913 1913  
1914 1914  
... ... @@ -1922,13 +1922,11 @@
1922 1922  * Device Size:  10 x 10 x 3.5 mm
1923 1923  * Device Weight: 120.5g
1924 1924  
1925 -
1926 1926  = 9. Reference material =
1927 1927  
1928 1928  
1929 1929  * [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0]]
1930 1930  
1931 -
1932 1932  = 10. FCC Warning =
1933 1933  
1934 1934  
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