{"action":"created","issue":{"url":"https://api.github.com/repos/google/eddystone/issues/178","repository_url":"https://api.github.com/repos/google/eddystone","labels_url":"https://api.github.com/repos/google/eddystone/issues/178/labels{/name}","comments_url":"https://api.github.com/repos/google/eddystone/issues/178/comments","events_url":"https://api.github.com/repos/google/eddystone/issues/178/events","html_url":"https://github.com/google/eddystone/issues/178","id":176851015,"number":178,"title":"Advertised Tx Power and VARIABLE_TX_POWER","user":{"login":"samueleforconi","id":6040113,"avatar_url":"https://avatars.githubusercontent.com/u/6040113?v=3","gravatar_id":"","url":"https://api.github.com/users/samueleforconi","html_url":"https://github.com/samueleforconi","followers_url":"https://api.github.com/users/samueleforconi/followers","following_url":"https://api.github.com/users/samueleforconi/following{/other_user}","gists_url":"https://api.github.com/users/samueleforconi/gists{/gist_id}","starred_url":"https://api.github.com/users/samueleforconi/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/samueleforconi/subscriptions","organizations_url":"https://api.github.com/users/samueleforconi/orgs","repos_url":"https://api.github.com/users/samueleforconi/repos","events_url":"https://api.github.com/users/samueleforconi/events{/privacy}","received_events_url":"https://api.github.com/users/samueleforconi/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":2,"created_at":"2016-09-14T08:53:38Z","updated_at":"2016-09-14T11:24:32Z","closed_at":null,"body":"Hi,\r\nthe Eddystone Spec. states that a beacon could support `VARIABLE_TX_POWER`, so each configured slot could have its own `TX_POWER`.\r\nThe Advertised Tx Power is defined as: \r\n> the received power at 0 meters\r\n\r\nBut this value depends on the configured Tx Power (if the beacon is configured with a Tx Power of +4dBm this value will be different from a beacon configured with a Tx Power of -20dBm). \r\n\r\nSo, when `VARIABLE_TX_POWER` is supported, how should be interpreted the value of the  Advertised Tx Power written in the Eddystone GATT characteristic? Should it be scaled accordingly to the current slot Tx Power?"},"comment":{"url":"https://api.github.com/repos/google/eddystone/issues/comments/246983053","html_url":"https://github.com/google/eddystone/issues/178#issuecomment-246983053","issue_url":"https://api.github.com/repos/google/eddystone/issues/178","id":246983053,"user":{"login":"samueleforconi","id":6040113,"avatar_url":"https://avatars.githubusercontent.com/u/6040113?v=3","gravatar_id":"","url":"https://api.github.com/users/samueleforconi","html_url":"https://github.com/samueleforconi","followers_url":"https://api.github.com/users/samueleforconi/followers","following_url":"https://api.github.com/users/samueleforconi/following{/other_user}","gists_url":"https://api.github.com/users/samueleforconi/gists{/gist_id}","starred_url":"https://api.github.com/users/samueleforconi/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/samueleforconi/subscriptions","organizations_url":"https://api.github.com/users/samueleforconi/orgs","repos_url":"https://api.github.com/users/samueleforconi/repos","events_url":"https://api.github.com/users/samueleforconi/events{/privacy}","received_events_url":"https://api.github.com/users/samueleforconi/received_events","type":"User","site_admin":false},"created_at":"2016-09-14T11:24:32Z","updated_at":"2016-09-14T11:24:32Z","body":"Ciao Michael, thanks for your explanation.\r\n\r\nSo, the aTx is one for each slot (I haven't understand this from the Spec.).\r\nIf the user sets the aTx, _that_ exact value will be set in the UID-URL-EID adv frames otherwise the beacon will use its internal calibration values (computed on the rTx value). \r\n\r\nThe other question is, can the user revert to use the rTx (with the internal calibration) once he has set the aTx?"}}
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