ER #390, March/April 2022
$4.00
Issue Contents
| # | Article | Author | Category |
|---|---|---|---|
| 2 | R-390A Curiosities Part 3: Product Detector Conclusion | Paolo Viappiani, | |
| 10 | 2022 Electric Radio Heavy Metal Rally Report | ER Readers, | |
| 12 | ER Mailbag: WWII Transmit Adapters | Dave Gordon-Smith, G3UUR | |
| 16 | Evolution of the Drake TR-3/TR-4 Transceiver Series: Part 2 | Jeff Covelli, WA8SAJ | |
| 21 | An Incredibly Simple Way to Calculate L and C | Dave Gordon-Smith, G3UUR | |
| 26 | Rediscovering the Classic 813 Amplifier | John Raydo, KØIZ | |
| 38 | A Young Ham's Success Story | Joe Fell, W3GMS | |
| 39 | Before there was a Silicon Valley, there was a Vacuum Valley! | Al Helfrick, K2BLA | |
| 48 | Vintage Nets | ER Readers, | |
| 49 | Classified Advertising, Vintage Equipment! | ER Readers, |
