Stack Exchange — ham.stackexchange.com

The content of ham.stackexchange.com (https://ham.stackexchange.com/), a Stack Exchange question-and-answer site, as published in the Stack Exchange Data Dump of April 2024 on the Internet Archive. The posts table holds 38,980 rows: 14,084 posts (4,734 questions, 8,891 answers, 226 tag wiki excerpts, 226 tag wikis, 3 posts of type 6 and 4 posts of type 7) and 24,896 comments, written between 22 October 2013 and 31 March 2024. Beside it are 20,512 user accounts, 58,889 votes, 23,882 badges awarded, 333 tags, 43,071 post revisions and 1,274 links between posts. Every answer keeps the question it answers and every comment the post it was written on, so the threads can be rebuilt. The Internet Archive item describes the dump as anonymised; the votes table names the voter in only 32 rows.

#Amateur radio#Expertise network#Stack exchange data dump

Download data package README Original files as received BibTeX JSONSimilar datasets

Analytics

The interactive network needs JavaScript.

· graph.json

The full graph has 3,040 nodes; this view shows the 1,000-node sample the pipeline drew for display. Node size is centrality, colour is community.

3K
Nodes
6.6K
Edges
7.12e-04
Density
38
Components
-0.2209
Assortativity
2.3%
Reciprocity
1.6K
Bridges
Most central nodes
1740.04475
5560.03422
90.02632
2180.02501
1060.01843
50.01777
130.01744
13620.01744
135980.01612
134500.01349
Content metrics

38,980 records scored · min–maxmean ± 0.675 σ (the interquartile range if the values are roughly normal)mean

x scoreμ 1.425 ± 2.628
min -6max 80
x view countμ 1.7K ± 5.3K
min 24max 142.9K
x answer countμ 1.879 ± 1.337
min 0max 18
x comment countμ 1.768 ± 2.524
min 0max 34
9.1
Flesch–Kincaid grade
US school grade level
9.6
Automated readability index
Frequent terms
antennaradiofrequencyusepowersignallikequestionimpedanceneeddongroundanswergoodbandantennascurrentdipolelinetimewirewaynoisewantwaveworkcoaxreceivermhzknowfrequencieshighpointthinktransmitterendamateurdifferenthamvoltagefindlowgainbetteroutputdoesnlengthswrcablelong
Topic clusters

Topic 0

answer
question
thank
edit
comment
post
link
site

Topic 1

license
radio
amateur
station
ham
fcc
band
use

Topic 2

antenna
dipole
wave
length
gain
wire
feed
impedance

Topic 3

impedance
swr
power
load
antenna
ohm
line
transmitter

Topic 4

frequency
signal
filter
carrier
bandwidth
receiver
mixer
ssb

Topic 5

coax
current
balun
common
line
mode
core
choke

Topic 6

radio
baofeng
audio
tone
microphone
speaker
icom
squelch

Topic 7

sdr
gnu
gnuradio
signal
block
rtl
radio
sample

Topic 8

ground
lightning
antenna
mount
rod
roof
strike
wire

Topic 9

satellite
propagation
earth
signal
time
ionosphere
radio
frequency
Top hashtags
#152
#247
#318
#1214
#3114
#1413
#include13
#4311
#410
#610
#1008
#88
#define6
#615
#675
#v5
#104
#264
#imgrc4
#post4

Computed over the full corpus.

Record

Catalog key
stackexchange-ham-stackexchange-com
Authors
Stack Exchange, Inc.
Year
2024
Source paper
Stack Exchange Data Dump
License
CC BY-SA 3.0 / 4.0 (by contribution date) (CC-BY-SA-3.0 AND CC-BY-SA-4.0)
Records
43,903
Nodes
3,040
Edges
6,574 (directed)
Nodes are
user (Stack Exchange account)
Edges are
answer collaboration (A answered B's question)
Attributes
nodes have attributes; edges have attributes
Text corpus
question titles, post bodies, comment text, tag names
Languages
en
Collected
2013/2024 (2010s, 2020s)
Tasks
From the graph: link prediction, community detection
Region
Global (inferred: the platform is used worldwide)

Provenance

Originally published at
https://archive.org/details/stackexchange link checked
Original files as received
The source files, unconverted, kept for reference: mirrored on echo.directory on 2026-10-09, 17.4 MB across 1 files. Checksums in MANIFEST.json. For use, start with the data package below.
Data package
Version 1.0.0 of this dataset as an ECHO Data Package: posts (38,980 rows), users (20,512 rows), x_votes (58,889 rows), x_badges (23,882 rows), x_tags (333 rows), x_post_history (43,071 rows), x_post_links (1,274 rows).
Structure
Temporal (timestamped), Node attributes, Text, Threaded conversations

How to cite

BibTeX

@misc{echo2026,
  title  = {ECHO: Exploratory Compendium of Humanity Online},
  author = {Switzer, Braden and Zafarani, Reza},
  year   = {2026},
  url    = {https://echo.directory},
  note   = {Syracuse University}
}

@misc{stackexchange_2024,
  title     = {Stack Exchange Data Dump},
  author    = {{Stack Exchange, Inc.}},
  year      = {2024},
  month     = {apr},
  publisher = {Internet Archive},
  url       = {https://archive.org/details/stackexchange}
}

APA

Switzer, B., & Zafarani, R. (2026). ECHO: Exploratory Compendium of Humanity Online [Data repository]. Syracuse University. https://echo.directory

Stack Exchange, Inc. (2024). Stack Exchange — ham.stackexchange.com [Data set]. https://stackexchange-ham.echo.directory/

MLA

Switzer, Braden, and Reza Zafarani. ECHO: Exploratory Compendium of Humanity Online. Syracuse University, 2026, echo.directory.

Stack Exchange, Inc. Stack Exchange — ham.stackexchange.com. 2024, stackexchange-ham.echo.directory/.

BibTeX · RIS · CSL-JSON

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