- Subscribers
- 33,322
- Average Upvotes
- 23.7
- Average Comments
- 5.2
- Min. Upvotes to HOT
- 1
r/sdr
Best Time to Post on r/sdr (UTC TIME)
r/sdr peaks Sundays 12pm-2pm UTC
sdr Subscriber Count - redditli.st
About r/sdr
r/sdr was created on April 21, 2013, making it 13 years and 6 months old and one of the older subreddits on Reddit. With 33,322 members, this is a growing community that has moved beyond the niche stage and attracts regular new members.
r/sdr is experiencing strong growth, with 4,238 new members in the last 30 days.
r/sdr Engagement Analysis
r/sdr shows moderate engagement relative to its size, with an average of 23.7 upvotes per post across its 33,322 members. The community is moderately discussion-oriented, with a comment-to-upvote ratio of 0.22. To reach the Hot section of r/sdr, posts typically need at least 1 upvotes, reflecting the community's activity level.
Posts on r/sdr receive an average of 5.2 comments, indicating a community with a healthy balance between content appreciation and active discussion. Members regularly engage with posts through both upvotes and comments.
r/sdr Posting Patterns Analysis
Based on an analysis of 12 top posts from the past week, Sunday is the most active day with 3 posts reaching the top, while Monday sees the least activity with 1 posts. Weekend activity tends to outpace weekdays, suggesting a more leisure-oriented community.
The peak posting hours are around 12pm UTC (2 posts), 11am UTC (2 posts), and 9pm UTC (1 posts). The quietest hours are 11pm UTC, 9am UTC, and 1pm UTC, with only 1-1 posts each reaching the top during these times.
Weekly breakdown: Monday (1), Tuesday (3), Wednesday (0), Thursday (0), Friday (3), Saturday (2), Sunday (3) posts reaching the top.
r/sdr Growth Analysis
r/sdr currently has 33,322 subscribers. Over the past 30 days, the community has grown by 4,238 members (14.57%), averaging 44 new subscribers per day. This growth rate places r/sdr in the top 0% of all tracked subreddits.
Over the past 90 days, r/sdr has gained 4,238 subscribers (14.57%). Since tracking began 710 days ago, the community has added 18,854 total subscribers. The recent growth rate is consistent with the community's longer-term trajectory.
r/sdr Milestones
- Reached 25K subscribers Jan 2026
- Fastest growth period: +3,964 subscribers Oct 2026
r/sdr Growth Trend
r/sdr is experiencing strong growth, with 4,238 new members in the last 30 days.
Frequently Asked Questions
How many subscribers does r/sdr have?
r/sdr has 33,322 subscribers as of November 2026.
What is the best time to post on r/sdr?
The best time to post on r/sdr is Sundays 12pm-2pm UTC, based on analysis of top-performing posts from the past week.
Is r/sdr growing?
r/sdr is experiencing strong growth, with 4,238 new members in the last 30 days.
When was r/sdr created?
r/sdr was created on April 21, 2013, making it 13 years old.
How many upvotes do you need to reach Hot on r/sdr?
Posts on r/sdr typically need at least 1 upvotes to reach the Hot section.
r/sdr Key Statistics Summary
r/sdr is a Reddit community with 33,322 subscribers. The community describes itself as: "Subreddit for all things Software Defined Radio (SDR), both hardware and software." The best time to post on r/sdr is Sundays 12pm-2pm UTC. Posts receive an average of 23.7 upvotes and 5.2 comments. The minimum upvotes needed to reach the Hot section is approximately 1. The subreddit is adding approximately 44 new members each day. Founded 13 years ago, r/sdr is tracked and analyzed by RedditList as part of its comprehensive database of over 106,374 subreddits.
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Last updated: 2026-10-29 14:42:51