diff --git a/content/_index.md b/content/_index.md
index 5c53341..b4658f5 100644
--- a/content/_index.md
+++ b/content/_index.md
@@ -1,13 +1,6 @@
 ---
 description: "Startseite CCCB mit Kurzkalender"
 ---
-### CCCB Maintenance Days
-
-Während des Chaos Communication Camps nutzen wir die Gelegenheit, um die
-Clubräume auf Vordermann zu bringen. Deshalb fallen die offenen Tage des Club
-Discordia vom 15. bis einschließlich 27. August aus. Ab dem 29. geht es
-regulär weiter. Viel Spaß am Gerät und danke für die Beachtung aller
-Sicherheitsmaßnahmen!
 
 ### Nächste Veranstaltungen:
 
diff --git a/content/datengarten/101.md b/content/datengarten/101.md
index c47c6af..5e15a76 100644
--- a/content/datengarten/101.md
+++ b/content/datengarten/101.md
@@ -13,7 +13,7 @@ event:
 location: CCCB
 language: de 
 streaming: true
-recording: 
+recording: https://media.ccc.de/v/dg-101
 ---
 Auf dem Weg zum perfekten smarten Eigenheim stolpert man früher oder
 später über das Thema Strommessung. Schnell tun sich einige Fragen
diff --git a/content/datengarten/102.md b/content/datengarten/102.md
new file mode 100644
index 0000000..c3dc741
--- /dev/null
+++ b/content/datengarten/102.md
@@ -0,0 +1,40 @@
+---
+categories: ["Datengarten"]
+tags: ["Mobilfunk", "GSM", "LTE"]
+series: "Datengarten"
+title: "Datengarten 102"
+no: 102
+subtitle: "Commercial Cellular Base Station Technology"
+speaker: "Harald \"LaF0rge\" Welte"
+date: 2019-09-04T16:23:00+02:00
+event:
+  start: 2019-09-10T20:00:00+02:00
+  end:   2019-09-10T22:00:00+02:00
+location: CCCB
+language: en
+streaming: true
+recording: 
+---
+In today's hyper-connected society, everyone constantly uses their smartphone,
+which in turn uses the commercial cellular networks (from 2G/GSM to 4G/LTE)
+in order to achieve connectivity.  However, contrary to WiFi technology, even
+most technology-minded people don't have much of an idea how the infrastructure
+behind those cellular networks looks like.
+
+This talk does not cover the architecture and protocols of underlying
+cellular systems, but focuses on the physical side of things:
+* what are the typical components of cellular base stations?
+* what are their key functionalities?
+* how did cellular base station technology evolve during the past 20 years?
+* how do we expect cellular base stations to change in the [near] future?
+
+We will not cover DIY or hobbyist projects here, but the actual technology deployed
+in the field by real-world commercial operators.
+
+About the speaker:
+
+Harald Welte is a CCC member since the 1990ies, developing Free Software
+for more than 20 years, has a prior life as Linux Kernel developer. He has
+founded the Osmocom project (https://osmocom.org/) about 10 years ago
+and focused his life on implementing cellular protocols, interfaces and
+network elements as Free Software.
\ No newline at end of file