diff --git a/hugo.toml b/hugo.toml
index 7a264db6bb22f421ce1d2cda7453ae700f103668..d05bcfbc17a647aeb89dd99f6432cfcbb8e4ba97 100644
--- a/hugo.toml
+++ b/hugo.toml
@@ -28,3 +28,4 @@ secondaryApUser="FLEAR"
 repoUrl="https://git.qoto.org/flear"
 siteRepoUrl="https://git.qoto.org/flear/flear-site"
 siteEmail="flear@flear.org"
+postHashtags=["HamRadio", "AmateurRadio", "Ham", "RF", "ElectricalEngineering", "EE"]
diff --git a/layouts/index.activity_outbox.ajson b/layouts/index.activity_outbox.ajson
index 0381a4261789f810cb7ceef1cebeca4d9cc918ff..7ffc6c5ddf65157fff429724a8e0ea844885fa07 100644
--- a/layouts/index.activity_outbox.ajson
+++ b/layouts/index.activity_outbox.ajson
@@ -32,6 +32,18 @@
         "url": "{{.Permalink}}",
         "attributedTo": "{{ .Site.BaseURL }}{{ site.Params.apUser | lower}}",
         "to": "https://www.w3.org/ns/activitystreams#Public",
+        {{ if .Site.Params.postHashtags }}
+        "tag": [
+          {{ range $indexTags, $elementTag := .Site.Params.postHashtags }}
+          {{ if ne $indexTags 0 }}, {{ end }}
+          {
+            "type": "Hashtag",
+            "href": "https://qoto.org/tags/{{ $elementTag }}",
+            "name": "#{{ $elementTag }}"
+          }
+          {{ end }}
+          ],
+        {{ end }}
         "published": {{ dateFormat "2006-01-02T15:04:05-07:00" .Date | jsonify }}
       }
     }