Holland HM-55 Commercial Modulator

The HM-55 is an adjacent channel audio/video modulator specifically designed for head-ends
requiring proven performance. The HM55‘s internal filters provide sharp VSB reduction for
adjacent channel operation while maintaining similar C/N and video response found in more
expensive SAW modulators.

High 55 dBmV Output
Available in Channels T8-T14, 2-36
Adjacent Channel Performance (Except Sub)
High VSB Attention
Spurious Harmonics -60 dB
Low Out-Of-Band Noise
Crystal Controlled Frequency
Complies with FCC Offsets & Accuracy Requirements
Auxiliary AC Outlet
Ten Years of Proven Reliability

Channels 2-13, A-I, J-W, T8-T14
Output Level 40 – 55 dBmV (Adjustable)
Output Range 15 dB (Adjustable)
A /V Ratio –5 to –20 dB (Adjustable)
Spurious Harmonics –60 dB
Frequency Accuracy ± 5 kHz
C/N (In-Channel) 60 dBc
Out-of-Band Noise –95 dBc (4MHz Bandwidth)
Minimum Input Level 0.5V p-p for 87.5% Mod.
Flatness ±1.5 dB, 30 Hz to 4.2 MHz
Modulation Range 60–95% (Adjustable)
Input Impedance 75 Ohms
Differential Phase 2º
Differential Gain 3%
Input Level 400mV p-p for ±25 kHz Dev

Aural Frequency 4.5 MHz ± 1.5 kHz (Above Video)|
Distortion Less Than 1.5%
Input Impedance 600 Ohms Unbalanced
Flatness ±1 dB (50 Hz to 15 kHz)
Power Requirements 117 VAC, 60 Hz, 7W
Operating Temperature Range 0º to 50º Celsius
Dimensions 19"W x 1.75"H x 3"D
Weight 4 lbs.
Connectors F-Type
Mounting 19" EIARack
Auxiliary Outlet 117 VAC, 600W
Front Panel Controls Output, Aural Carrier, Video
Modulation & Audio Deviation
Test Port –20 dB

Will ship anywhere in the Continental US for $11.25 UPS Groundtrak and advise you of the tracking number as it ships so you can track it at the UPS website. Add $4 to Canada, Alaska, Puerto Rico or Hawaii. Other overseas add $8.00 US$ Payment by credit card, Money Order, Billpoint or Paypal. Please do not bid if you cant pay within 3 to 5 days. Thanks for the bids and good luck.....