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244 [2007/02/28 16:50]
244 [2007/05/21 00:41]
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-====== Digital Readout Model 244 ====== 
-===== 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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