Boonton Electronics 102D FM - AM Signal Generator

FREQUENCY: 450KHz - 520MHz; 6 digit
LED display: internal phase lock
RESOLUTION: 100Hz @ all frequencies locked or unlocked
STABILITY:
Locked - <0.05ppm/hr.
Unlocked - <10ppm/10min.
CLOSE IN NOISE: 115dB/Hz, 20KHz offset
NOISE FLOOR: 135dB/Hz
OUTPUT: +13 to -130dBm; levelling, +/-0.5dB
LEAKAGE: Allows unrestricted measurememnts on fractional-microvolt-sensitivity unshielded receivers in close proximity to the generator.

Very high performance FM - AM Signal Generator with Digital Frequency Display and Phase Lock. This model exibits low noise, high stability and excellent shielding characteristics necessary for narrow band receiver measurements. Stability is provided by phase locking to either an internal temperature compenstaed crystal oscillator or an external standard reference frequency. A unique feature allows display of the TRUE locked output frequency with full 199Hz reolution even when the vernier is used to tune between lock extremes.