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358: Difference between revisions
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{{Catalog History}} | {{Catalog History}} | ||
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The | The {{Title|General Radio 358 Amateur Band Wavemeter}} was introduced in {{Bulletin 926}} and remained available through {{Catalog K1}}. | ||
The Type 358 is an absorption type wavemeter covering the four overlapping bands. It has an frequency accuracy of 1% and uses an incandescent lamp as a resonance indicator. The lamp is in a special socket that closes the connection when the lamp is removed if not needed. A Type 247 gear driven condenser is used inside the meter. Each wavemeter is supplied with a calibration chart produced with settings accurate for that particular meter. | The Type 358 is an absorption type wavemeter covering the four overlapping bands. It has an frequency accuracy of 1% and uses an incandescent lamp as a resonance indicator. The lamp is in a special socket that closes the connection when the lamp is removed if not needed. A Type 247 gear driven condenser is used inside the meter. Each wavemeter is supplied with a calibration chart produced with settings accurate for that particular meter. | ||