| | |  | RF Amplifiers | Home » » » » Channel Plus DA-520A 20 dB Bidirectional Cable Amplifier | | | | | | | Description: | | 1 CATV OR BROADCAST ANTENNA INPUTOUTPUTS TO TV LOCATIONS1 OUTPUTBANDWIDTH: FULL CATV SPECTRUM 40 MHZ 1 GHZ PLUS RETURN PATH OF 5 MHZ 42 MHZ20 DB FORWARD GAIN PLUS 0 DB OF RETURN PATH GAINUPC : 782644007422Shipping Dimensions : 8.75in X 3.00in X 2.00inEstimated Shipping Weight : 1.125 | | | Features: | |
• Bidirectional amplifier for all RF bands, including VHS, low and high FM, and 4 cable TV bands
• Reverse directionality specifically designed for interactive cable systems and cable modems
• Amplifies original video signal for noise-free picture; 20 dB of gain in CATV or antenna system
• 54 MHz to 1 GHz forward bandwidth; 5 MHz to 40 MHz reverse bandwidth; +/- 1.5 dB gain flatness
• Measures 3.5 x 1.2 x 2.5 inches (W x H x D); 1-year warranty
| | | Product Details: | | | Product Length:
| 2.8 inches | | Product Width:
| 7.0 inches | | Product Height:
| 2.0 inches | | Product Weight:
| 1.13 pounds | | Package Length:
| 8.9 inches | | Package Width:
| 2.4 inches | | Package Height:
| 2.1 inches | | Package Weight:
| 1.1 pounds | | Average Customer Rating:
|  based on 3 reviews |
| | | | Customer Reviews: | |
Average Customer Review:
 ( 3 customer reviews )
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Most Helpful Customer Reviews
19 of 20 found the following review helpful:
 Performs as advertised, but beware of noiseSep 29, 2005
By Major Pagefault
I purchased the Channel Plus DA-520A 20dB signal booster in order to boost my cable signal due to significant (-19dBmV @ 700MHz) attenuation caused by a 6-way splitter at the ingress junction point of my house.
I found that this booster performs exactly as advertised. It brought my signal up to right around 0dBmV - the perfect level. However, I found that it also appeared to introduce a significant amount of noise; some RF-sensitive equipment I had in the vicinity of the device started showing signs of interference. I also found that my SNR dropped by 4dB (from 34dB to 30dB) when comparing the signal against a competing 15dB device. I am not certain whether this may have been due to my overdriving the line at the lower frequencies, but if so, an adjustable gain control would have been a handy and eminently useful addition.
So, in a nutshell, this device does exactly what it's supposed to: it boosts the input signal (and perhaps the input noise too). However, I found the device to emit more RF noise than a comparable 15dB booster, both on the wire and off it.
3 of 3 found the following review helpful:
 Strong Amplifier for your TVsMar 13, 2006
By EJ
"electronic junky"
This product is very easy to setup and boosts the Cable signal. With HD signals, you need a strong signal. This product is a good value for those who want strong signals on all TVs.
1 of 1 found the following review helpful:
Cable AmplifierJun 09, 2008
By S. Lipoff
This is a bidirectional amp that will work with a cable modem or two-way set-top box
however it lacks a variable forward gain adjustment. It can be overloaded if the input
signal is too high but is useful if you install it after several splits so the
input signal is weak. It has an external power supply which connects to a
dedicated f connector on the unit. It would have been more useful if you
could power it with a power inserter on the same output coax that has the
output RF signal.
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