| RefNo | ACS/1/2/1/663 |
| AltRefNo | 741 |
| Level | Item |
| Title | Letter from [Alan Archibald Campbell] Swinton, to H. T. Ellis [Esquire], Wren Head |
| Creator | Swinton; Alan Archibald Campbell (1863-1930); British electrical engineer |
| Date | 25 April 1921 |
| Description | Apologises for his delayed response and enquires when Ellis is due to be in town so he can show him his new apparatus. Informs he has a new amplifier with tuned intervalve transformers, commenting on how much more effective it is thant the resistance capacity cpupled amlifier. Comments on his recent work involving the reception of signals on a frame entirely closed in a box. States that he used a box covered all over with copper wire and iron wire netting, and with this he shall get the Eiffel Tower signals. He is now making a box of sheet copper and is interested to see whether he still gets signals inside of it. Informs of his interesting correspondence with Oliver Lodge on the subject, commenting that Lodge found that with short Hertzian waves, the wire netting was almost a complete screen. |
| Extent | 2p |
| Format | Typescript |
| PhysicalDescription | Carbon |
| AccessStatus | Open |
Fellows associated with this archive
| Code | PersonName | Dates |
| NA8285 | Swinton; Alan Archibald Campbell (1863 - 1930); electrical engineer | 1863 - 1930 |
| NA8070 | Lodge; Sir; Oliver Joseph (1851 - 1940); physicist | 1851 - 1940 |