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FEATURES
GainCATV/Antenna port to output 3dBModulator input to output -10dBOutput to CATV (reverse) -15dB (5-42MHZ)IsolationModulator input to CATV/Ant >35dBBandwidth 54-806MHz fwd | 5-42MHz revMax CATV/Antenna input 20dBmV(+85dBuV)Power supply (included) 15 VDC @ 300mAGeneralDimensions (16.5 x 11.5 x 3.5) (w)x(h) x(d)Shipping weight 4 lbs. (1.8kg)
from Spanish Fork, UT on 9/4/2007
If using without the IR units (basically as a distribution amp/lossless splitter) where cable runs will be connected directly to electronics, you need to be sure to order the 250110 DC blocking capacitors. They come in a 10 pack and are reasonably priced.
Since this functions as a true lossless splitter, and if you have a strong incoming signal you may also want to purchase some fixed attenuators to prevent having too much signal at the end of the run. I found that even on longer runs I had excessive signal (which can create a herringbone pattern on the display on some channels) and ended up inserting an attenuator prior to splitting. You can also insert various strength atttenuators in individual runs to fine tune the signal for each unit. These are relatively inexpensive and commonly are available in 3, 6, 10 & 12 db levels.
As in all RF applications you will want to use a DC blocking capacitor and 75 ohm terminator on any unused outlets or cable runs not connected to either an IR unit or electronic device. This prevents signal transmission and bounce back which might create ghost images or other interference on some channels.
This unit was very easy to install in an existing distribution network.
This Channel Plus DA-550BID replaced an existing RF amplifier from another manufacturer. There was a very noticeable improvement in picture quality at each cable drop over the other unit. As this unit does not have any gain adjustment, please be aware that it may be necessary to use fixed attenuators if you have a high level CATV input. This is covered in the manual and on the Channel Plus website. Highly recommended!