Look-Up Charts.
| Title | Description | Source |
|---|---|---|
| Thread comparison | A comparison between different Thread Sizes. Imperial and Metric | Data obtained from various sources |
| Spanner comparison | A comparison between different Spanner Sizes. Imperial and Metric | Origin unknown Contributed by: Roy G3ASH |
| Tapping drills | Chart to determine Tapping / clearance drills. Invaluable in the workshop | Data obtained from various sources |
| Q Codes | Abbreviations used in radio comm's (esp' Morse) | Unknown Source |
| RST Codes | Abbreviations used in radio comm's (to determine quality of transmission) | Unknown Source |
| Lighting Levels | Equivalent lighting levels | John G8MNY |
| Sound Levels | Equivalent Sound levels | John G8MNY |
| dB ratio's | Power & voltage dB ratio's | John G8MNY |
| Frequency Listing. | Slow download (150Kb) but loads of info! | www.wibble.co.uk |
| Battery Cross reference. | Battery Cross-reference. With Tech' details too. | Steve G0KVZ |
| IP Rating. | Ingress Protection ratings. | All over (public domain) |
| Military Airbase Info Chart. (PDF) | Radio frequencies. for military airbases. | Var (Public domain) |