diff --git a/.codespellrc b/.codespellrc
index 042a14e..df222e9 100644
--- a/.codespellrc
+++ b/.codespellrc
@@ -1,5 +1,5 @@
 [codespell]
-skip = *.asdf,*.fits,*.fts,*.header,*.json,*.xsh,*cache*,*egg*,*extern*,.git,.idea,.tox,_build,*truncated,*.svg,.asv_env,.history
+skip = *.asdf,*.fits,*.fts,*.header,*.json,*.xsh,*cache*,*egg*,*extern*,.git,.idea,.tox,_build,*truncated,*.svg,.asv_env,.history,radiospectra/net/sources/tests/*.html
 ignore-words-list =
     alog,
     nd,
@@ -10,4 +10,5 @@ ignore-words-list =
     upto,
     afile,
     precessed,
-    precess
+    precess,
+    technik
diff --git a/radiospectra/net/sources/ecallisto.py b/radiospectra/net/sources/ecallisto.py
index d3d538e..5d1035b 100644
--- a/radiospectra/net/sources/ecallisto.py
+++ b/radiospectra/net/sources/ecallisto.py
@@ -7,7 +7,7 @@
 
 class eCALLISTOClient(GenericClient):
     """
-    Provides access to `eCallisto radio spectrometer <http://soleil80.cs.technique.fhnw.ch/solarradio/data/2002-20yy_Callisto/>`__
+    Provides access to `eCallisto radio spectrometer <http://soleil80.cs.technik.fhnw.ch/solarradio/data/2002-20yy_Callisto/>`__
     `data archive <https://spdf.gsfc.nasa.gov>`__.
 
     `Further information <http://www.e-callisto.org>`__.
@@ -40,7 +40,7 @@ class eCALLISTOClient(GenericClient):
     """
 
     baseurl = (
-        r"http://soleil80.cs.technique.fhnw.ch/solarradio/data/2002-20yy_Callisto/"
+        r"http://soleil80.cs.technik.fhnw.ch/solarradio/data/2002-20yy_Callisto/"
         r"%Y/%m/%d/{obs}_%Y%m%d_%H%M%S.*.fit.gz"
     )
     pattern = (
diff --git a/radiospectra/net/sources/tests/data/rstn_holloman.html b/radiospectra/net/sources/tests/data/rstn_holloman.html
index 26c0db4..613842c 100644
--- a/radiospectra/net/sources/tests/data/rstn_holloman.html
+++ b/radiospectra/net/sources/tests/data/rstn_holloman.html
@@ -5,7 +5,7 @@
  </head>
  <body>
 <!-- BEGIN HEADER  -->
-<div id="left_image" style="width:440; position:absolute; left:0px; top:0px;">
+<div id="left_image" style="width:440; postion:absolute; left:0px; top:0px;">
  <a href="https://www.ngdc.noaa.gov/ngdc.html" target="_top" title="go to NOAA National Centers for Environmental Information (formerly the National Geophysical Data Center) home"><img src="https://www.ngdc.noaa.gov/image/nesdisngdcleft.gif" alt="Logo" title="go to NOAA National Centers for Environmental Information (formerly the National Geophysical Data Center) home" border="0" width="440" height="50"></a>
 </div>
 <div id="right_image" style="width:121; position:absolute; right:0px; top:0px">
diff --git a/radiospectra/net/sources/tests/data/rstn_learmonth.html b/radiospectra/net/sources/tests/data/rstn_learmonth.html
index c5b4d5c..54c681f 100644
--- a/radiospectra/net/sources/tests/data/rstn_learmonth.html
+++ b/radiospectra/net/sources/tests/data/rstn_learmonth.html
@@ -5,7 +5,7 @@
  </head>
  <body>
 <!-- BEGIN HEADER  -->
-<div id="left_image" style="width:440; position:absolute; left:0px; top:0px;">
+<div id="left_image" style="width:440; postion:absolute; left:0px; top:0px;">
  <a href="https://www.ngdc.noaa.gov/ngdc.html" target="_top" title="go to NOAA National Centers for Environmental Information (formerly the National Geophysical Data Center) home"><img src="https://www.ngdc.noaa.gov/image/nesdisngdcleft.gif" alt="Logo" title="go to NOAA National Centers for Environmental Information (formerly the National Geophysical Data Center) home" border="0" width="440" height="50"></a>
 </div>
 <div id="right_image" style="width:121; position:absolute; right:0px; top:0px">
diff --git a/radiospectra/net/sources/tests/data/rstn_san-vito.html b/radiospectra/net/sources/tests/data/rstn_san-vito.html
index 838ceef..6dc4e6d 100644
--- a/radiospectra/net/sources/tests/data/rstn_san-vito.html
+++ b/radiospectra/net/sources/tests/data/rstn_san-vito.html
@@ -5,7 +5,7 @@
  </head>
  <body>
 <!-- BEGIN HEADER  -->
-<div id="left_image" style="width:440; position:absolute; left:0px; top:0px;">
+<div id="left_image" style="width:440; postion:absolute; left:0px; top:0px;">
  <a href="https://www.ngdc.noaa.gov/ngdc.html" target="_top" title="go to NOAA National Centers for Environmental Information (formerly the National Geophysical Data Center) home"><img src="https://www.ngdc.noaa.gov/image/nesdisngdcleft.gif" alt="Logo" title="go to NOAA National Centers for Environmental Information (formerly the National Geophysical Data Center) home" border="0" width="440" height="50"></a>
 </div>
 <div id="right_image" style="width:121; position:absolute; right:0px; top:0px">
diff --git a/radiospectra/net/sources/tests/test_ecallisto_client.py b/radiospectra/net/sources/tests/test_ecallisto_client.py
index d6544d0..0c2dfd5 100644
--- a/radiospectra/net/sources/tests/test_ecallisto_client.py
+++ b/radiospectra/net/sources/tests/test_ecallisto_client.py
@@ -43,7 +43,7 @@ def test_client(urlopen, client, http_responses):
     query = client.search(a.Time("2019/10/05 23:00", "2019/10/06 00:59"), a.Instrument("eCALLISTO"))
     assert urlopen.call_count == 2
     # 2nd call
-    urlopen.assert_called_with("http://soleil80.cs.technique.fhnw.ch/solarradio/data/2002-20yy_Callisto/2019/10/06/")
+    urlopen.assert_called_with("http://soleil80.cs.technik.fhnw.ch/solarradio/data/2002-20yy_Callisto/2019/10/06/")
     assert len(query) == 156
 
 
@@ -68,7 +68,7 @@ def test_client_with_observatory(urlopen, client, http_responses):
     )
     assert urlopen.call_count == 2
     # 2nd call
-    urlopen.assert_called_with("http://soleil80.cs.technique.fhnw.ch/solarradio/data/2002-20yy_Callisto/2019/10/06/")
+    urlopen.assert_called_with("http://soleil80.cs.technik.fhnw.ch/solarradio/data/2002-20yy_Callisto/2019/10/06/")
     assert len(query) == 8
 
 
