--- title: Enabling Class B devices on Kona Gateways description: "            "//beacon": "Below are beaconing parameters", 1"use_utc_timestamp": 1, Note that the UTC timestamp is only reported when GPS is locked. When GPS is lost, the UTC timestamp won’t be reporte" --- [Skip to content](https://knowledgehub.tektelic.com/enabling-class-b-devices-on-kona-gateways#main-content) English Show submenu for translations ![](https://knowledgehub.tektelic.com/hubfs/logo%20Tektelik.svg) Open main navigation Close main navigation - English Show submenu for translations - [Contact us](https://supporthub.tektelic.com/tickets-view) [Contact us](https://supporthub.tektelic.com/tickets-view?hsLang=en) Search Documentation - There are no suggestions because the search field is empty. 1. [Knowledge Hub](https://knowledgehub.tektelic.com/?hsLang=en) 2. [LoRaWAN Gateways](https://knowledgehub.tektelic.com/lorawan-gateways?hsLang=en) 3. [General Kona Gateway Information / Configuration](https://knowledgehub.tektelic.com/lorawan-gateways?hsLang=en#general-kona-gateway-information-configuration) # Enabling Class B devices on Kona Gateways ### Enabling Class-B Beacon Frames: - The Mega/Macro/Enterprise gateways can be configured to transmit class-B beacon frames. - To do this, modify the following entries in the gateway\_conf object in the /etc/default/config.json file for US915 gateways. For other LoRa Region Class B parameters, please refer to the LoRa Regional Parameters:             "//beacon": "Below are beaconing parameters",               "//period": "To enable beacon, change the beacon\_period to 128",               "beacon\_period": 128,               "beacon\_freq\_hz": 923300000,               "beacon\_freq\_nb": 8,               "beacon\_freq\_step": 600000,               #"datarate": "From legacy Semtech, this is actually spreading factor",               "beacon\_datarate": 12,               "beacon\_bw\_hz": 500000,               "beacon\_power": 30,               "beacon\_infodesc": 0, - In the case of gateways running older BSP versions, these entries have to be added.  Also, check with region parameters in the LoraWAN specification to use the correct entries. - For new BSP versions, only the “beacon\_period” field is required to be changed to 128. - Note that beacon frames are only sent when GPS is locked. If the GPS lock is lost, no beacon frames are sent even if beacons are enabled. ### Enabling UTC Timestamp: - The UTC timestamp (reported as “time” in the rxpkt json string), by default, is disabled. - To enable the UTC timestamp, add the following into the gateway\_conf object in the /etc/default/config.json file: 1"use\_utc\_timestamp": 1, - To disable the UTC timestamp, simply remove the entry or by changing the value to 0. Note that the UTC timestamp is only reported when GPS is locked. When GPS is lost, the UTC timestamp won’t be reported even though the timestamp is enabled. ### Disabling GPS Timestamp: - By default, the GPS timestamp (reported as “tmms” in the rxpk packet in the pkt\_fwd.log) is enabled. - To disable the GPS timestamp, add the following into the gateway\_conf object in the /etc/default/configj.json file:             "use\_gps\_timestamp": 0, - To enable the GPS timestamp, simply remove the entry or by changing the value to 1. Note that the GPS timestamp is only reported when GPS is locked. When GPS is lost, the GPS timestamp won’t be reported even though the timestamp is enabled. ### Configurations Specific to Kona Mega Gateway: #### Enabling Antenna Scheduling for Multicarrier Transmission: - In general, the gateway assumes that packets are scheduled by the network server on which the antenna to transmit is enabled. Hence, by default, antenna scheduling on the gateway is disabled. - However, if one wants to enable antenna scheduling on the gateway for multi-carrier transmission purposes, the following entries need to be added to the gateway\_conf object in the /etc/default/config.json file:            #schedule": "To allow the gateway to schedule antenna for tx, change the following to 1",              ​ "antenna\_sched": 1, - To disable antenna scheduling, simply remove the entry or by changing the value to 0. 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