558-P
The General Radio 558-P Amateur Band Frequency Meter was introduced in 1930 Catalog F1 and available through 1931 Bulletin 933.
Specifications
- Frequency Range: five bands, 3.5 to 4.0 MHz, 7.0 to 8.0 MHz, 14.0 to 16.0 MHz, 28 to 32 MHZ, 56 to 51 MHz
- Frequency Calibration Accuracy: 0.25%
