- The SW Index now participates in two affiliate advertising programs with two large retailers that still sell shortwave radios, the Amazon Services LLC Associates Program and the eBay Partnership, designed to provide a means for sites like ours to earn advertising fees by advertising and linking to these retailers of radio products. Many of our links now function as affiliate links. This means that by clicking on these links, a small percentage of the purchase price for goods you purchase from these sellers will help support our site’s running costs. We hope you understand, and are grateful for your support.
But please note that we will never create a post and product link explicitly to receive a commission. Additionally, we always try to include links to other retail options if they are available, as we support and freely advertise independent ham radio retailers. Thank you, too, for your support of these sites and for making the initial suggestion of joining affiliate programs program. It has been providing a nice supplement for our running costs.
Our other shortwave sites
- SWLing Post shortwave listening news, interviews, reviews and more
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SWLing Post
- Carlos’ Illustrated Radio Listening Report and Recording of Radio Mitre (June 12, 2025)
- Kyodo News Radiofax English Edition
- Can you identify this radio and loop antenna in “Young Sheldon”?
- “NOAA Weather Radio Disruptions Highlight Need for EAS Backups”
- Carlos’ Illustrated Radio Listening Report and Recording of ZP-30 (June 11, 2025)
- Can You Help Locate Recordings of ZANLA Broadcasts from Mozambique?
- Carlos’ Illustrated Radio Listening Report and Recording of CNN Radio Argentina (June 10, 2025)
- Orbiting outer space via shortwave
- “Helene, Milton exposed need to protect AM radio”
- Amateur Radio Resources for Visiting Hams at the 24 Hours of Le Mans
- “VOA Museum exhibit honors Dusty Rhodes, Jim LaBarbara, TV Kiese – WVXU”
- New SDR Recordings from Peru and Brazil Now Available via Don Moore
- Bob’s Radio Corner: Tuning Single-Letter Cluster Beacons
- Carlos’ Illustrated Radio Listening Report and Recording of Radio Mitre (June 7, 2025)
- Sporadic-E and FM DXing
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Tag Archives: Spectrafold Technologies
Quadrus SDR
The Quadrus SDR is a new military-grade SDR with phase-coherent multi-channel capabilities with up to 16 channels, which means that it can be used for direction finding, diversity reception, as well as MIMO applications. While the Quadrus line is aimed squarely at government … Continue reading
Posted in Software-Defined Radios (SDR), Spectrafold Technologies
Tagged Quadrus SDR, SDR, Software-Defined Radio, Spectrafold Technologies
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