| Name | Call Sign | Location | Comments | Web Site | Date entered |
| HamCall.net | HamCall | On Line | Directory and resource | Hamcall.net | 19 11 2019 |
| QRZ.com | QRZ | On Line | Directory and resource website for amateur radio enthusiasts. | www.qrz.com | 16 11 2019 |
| CDARC | G2XV | Cambridge | Excellent club in Cambridge | www.cdarc.org.uk | 25 10 2019 |
| Hey What’s That | On Line | Great site for assessing terrain from a given point. | www.heywhatsthat.com/ | 05 04 2020 | |
| TXFactor | NA | On Line | Great TV on line | www.txfactor.co.uk | 08 02 2020 |
| dmkradio | G6KWA | Cambridge | History of CDARC | www.dmkradio.net | 19 11 2019 |
| Article about dB | na | On Line | Interesting and useful explanation of the decibel and how it relates to power and antennas | www.nutsvolts.com/magazine/article/January2017_HamsWirelessWorkbench_Ham-Metrics-and-Decibels | 30 12 2019 |
| Survival Tech Nord | OH8STN | Finland | Interesting and useful reference site | www.OH8STN.org | 08 02 2020 |
| RSGB | GB2RS | Bedford | Radio Society of Great Britain - providing training, support and resources for radio Hams | www.rsgb.org | 19 11 2019 |
| m0zpk | M0ZPK | On Line | Resource site for electronics and amateur radio etc. | www.m0zpk.co.uk | 21 11 2019 |
| SCARS | G6TW | Crewe | Small amateur radio club meets in Crewe | www.g6tw.org.uk | 22 10 2019 |
| IW5EDI Simone | IW5EDI | Italy | Useful calcs for Magnetic Loop | www.iw5edi.com/software/magnetic-loop-calculator | 06 04 2020 |
| 66 Pacific | na | On Line | Useful calcs for Magnetic Loop | www.66pacific.com/calculators/small-transmitting-loop-antenna-calculator.aspx | 06 04 2020 |