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558-P: Difference between revisions
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* [[Media:GRwiki Bulletin 933 OCR 1931.pdf|Bulletin 933 (1931)]], p.25 | * [[Media:GRwiki Bulletin 933 OCR 1931.pdf|Bulletin 933 (1931)]], p.25 | ||
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The '''General Radio 558-P Amateur Band Frequency Meter''' was introduced in | The '''General Radio 558-P Amateur Band Frequency Meter''' was introduced in {{Catalog F1}} and remained available through {{Bulletin 933}}. | ||
The Type 558-P is an absorption type wavemeter which is identical to Type [[558]] except the neon resonance indicator has been discontinued. It retains the same five bands and 0.25% accuracy but resonance is determined by reaction of the device under examination. Each wavemeter is supplied with a calibration chart produced with settings accurate for that particular meter. An accessory low frequency coil is available as Type [[558-P6]]. If a [[558-P6]] coil is purchased separately your meter would have to be returned to the factory for calibration with that particular coil-meter combination. | The Type 558-P is an absorption type wavemeter which is identical to Type [[558]] except the neon resonance indicator has been discontinued. It retains the same five bands and 0.25% accuracy but resonance is determined by reaction of the device under examination. Each wavemeter is supplied with a calibration chart produced with settings accurate for that particular meter. An accessory low frequency coil is available as Type [[558-P6]]. If a [[558-P6]] coil is purchased separately your meter would have to be returned to the factory for calibration with that particular coil-meter combination. | ||