B 2 - 2 Broadband VHF & UHF Preamplifiers CMA Series
CMA-LB,CMA-HB,CMA-BB,CMA-Uc - BROADBAND VHF AND UHF PREAMPLIFIERS
The CMABroadband Preamplifier Series includes professional quality, low noise, broadband VHF & UHF preamplifiers. These units have been designed to meet the needs of broadband system installations. The CMA Broadband Preamplifier Series provide exceptionally high signal handling capability and gain with good input match, making these preamplifiers ideal for use with wideband TV antennas. Four models are available, including: CMA-LB, Low Band VHF; CMA-HB , High Band VHF; CMA-BB, Broadband VHF; and CMA-Uc, Broadband UHF. A20 dB backmatched test port is supplied, permitting the unit's performance to be monitored without interrupting service.
The CMA Broadband Preamplifier Series products are housed in a rugged die-cast case with an aluminum cover. Input, output, and test ports are 75 W, type "F" female connectors. These preamplifiers mount on the antenna mast (with supplied mounting hardware) and power is diplexed on the downlead, eliminating the need for a separate power feed. The voltage and current requirements for the CMA-LB, CMA-HB, and CMA-BB are -21 VDC @ 50 mA, which can easily be handled with Blonder Tongue's PS-1536 Power S u p p l y. The voltage and current requirements for the CMA-Uc are -21 VDC @ 29 mA, which can easily be handled with Blonder Tongue's PS-1526 Power Supply. The CMABroadband Preamplifier Series works in conjunction with most broadband VHF and UHF antennas, including the BTYBroadband Antenna Series. Blonder Tongue Preamplifiers can accommodate a maximum mast size of 1.5" O.D. (outside diameter).
SPECIFICATIONS CMA-LB CMA-HB CMA-BB CMA-Uc
ELECTRICAL # 4448-LB # 4448-HB # 4448-BB # 1264 Unit
Frequency Range: 54-88 (2-6) 174-216 (7-13) 54-216 (2-13) 470-806 (14-69) MHz
Noise Figure: 5 . 0 5 . 0 5 . 0 3 . 0 dB
Gain : 2 6 2 6 2 6 2 0 dB
Bandpass Flatness: ± 0 . 5 ± 0 . 5 ± 0 . 7 1 . 5 dB
Min. Recommended Input Level (a): - 7 - 7 - 7 - 9 dB mV
Input Capability: +28 (b) +26 (c) +25 (d) +26 (e) dB mV
Impedance - All Ports : 7 5 OHM
Power Requirements: -21 VDC @ 50 mA
Recommended BT Power Supply: P S - 1 5 3 6 PS-1 5 2 6
Temperature Range: -40 to +60 ° C
Maximum Mast Diameter (O.D.): 1 . 5 i n .
CONNECTORS (COMMON TO ALL ) Input : "F" type, female * Output : "F" type, female Test : "F" type, female
BT #CMA-b SINGLE CHAN. VHF/FM PRE-AMP. 54-216MHZ
BT #CMA-LB BROADBAND LB VHF PRE-AMP 54-88MHZ INFO
BT #CMA-HB BROADBAND HB VHF PRE-AMP 174-216MHZ INFO
BT #CMA-BB BROADBAND VHF PRE-AMP 54-216MHZINFO
BT #CMA-Uc BROADBAND UHF PRE-AMP 470-806MHZ INFO
PS-1526 POWER SUPPLY FOR PREAMPS 48ma INFO
PS-1536 DUAL POWER SUPPLY FOR PREAMPS 100ma INFO
Low Noise Figure Excellent Gain, High Input Capability Ideal for All BTY Broadband Antennas Output Test Port for Uninterrupted Service Testing
(a) TASO Grade 1 (Excellent) Picture - 46 dB S/N.
(b) Input level per channel with 3 channel loading.
(c) Input level per channel with 4 channel loading.
(d) Input level per channel with 7 channel loading.
(e) Input level per channel with 3 channel loading, XMOD @ -46 dB).
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