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244 [2007/02/28 16:50] n5na |
244 [2007/05/21 00:41] |
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| - | ====== Digital Readout Model 244 ====== | ||
| - | {{244.jpg?150|}} | ||
| - | ===== Description ===== | ||
| - | Plugs into the accessory socket of the Model [[540]]. Six digits show actual transmitted and received frequencies to hundreds of Hertz. The VFO output frequency, which is 9 MHz away from the operating frequency, is counted and a 9 MHz preset is either added to or subtracted from the count by means of the front panel mode switch, thus eliminating all VFO crystal tolerance errors. The 9 MHz oscillator tolerance error is eliminated by setting the time base gating oscillator to WWV. A COUNT position on the mode switch permits using the 244 as a straight 50 kHz to 22 MHz frequency counter. Includes cable. Housed in matching enclosure. | ||
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