Note
73, Feb 1981, p. 52.
Text from the ad:
Shows exact transmitter frequency every time you hit the mike button. Great for mobile professionals and hobbyists. Goes anywhere on 12 VDC, on the road or at home. AC/DC converter included for base operation. 5'' red LED digits with lead digits blanking; range 1 to 50 MHz (typical); accuracy to 100 cycles; sensitivity 50 mV. Compact 1 3/4' x 4 1/2 '' x 4" textured black plastic case sits anywhere with velcro-type "spots."