Denny's TV Antenna Sales

"Helping America Watch Free TV Since 1988" . Mon. - Fri. 9am - 4pm.  EST. Call 989 875 4902

Satisfaction guarantee
Most popular pages
Denny's TV Antenna home
ONLINE STORE
100% Satisfaction Guaranteed
Customer Service
Best small long range TV antenna
4k TV Antenna
TV antennas
Preamplifier's
Using the Channel Master 7778HD preamplifier
preamplifiers distribution amplifiers
HDP 269 TV antenna preamplifier
LNA-200 Boost XT Outdoor Antenna Preamplifier
Channel Master 7777 preamplifier-booster
Amplifier help
Antenna booster for TV
Voltage Block
Distribution Amplifiers
Mounts & Hardware
Coaxial Cable & Accessories
Rotors - Rotator
Omnidirectional TV Antenna
Long Range UHF TV Antenna
Long Range FM Antenna
TV Antenna Recommendations
TV Antenna Help Center
Site map
Indoor vs. Outdoor TV Antenna
Accessories
Fast Shipping
TV Antenna Selector
Products & Information
Best TV Antenna
Installation Guide
TV Stations
Ask Denny Q & A's
HDTV antenna Fact or Fiction
About us
Privacy Policy
Location - Map
Guide to TV antenna installation

Using the Channel Master 7778HD preamplifier


The Channel Master 7778HD preamplifier is one of the best preamplifier's to come along in some time.

It's very versatile, low noise figure, high signal input capacity, steel housing and performs excellent.                  

Channel Master 7778HD installation manual


Hi Denny-

You recommended and I purchased from you, the CM7778HD which has a separate input for a VHF coax and a UHF coax antenna lead.  It appears that there is only one coax lead transformer supplied with the HD Stacker.  Can I just get another equivalent transformer or is there some specs I need to be aware of?  I assume that each antenna lead be connected to the respective input on the CM7778HD.

Thanks-

Steve


Hi Steve,

When assembled properly the HD Stacker antenna has a VHF/UHF single output. The CM 7778HD has two switchable input choices. It has the option of VHF/UHF combined input or separate VHF and UHF inputs. The unit comes preset to combined input meaning the single input  labeled "combined" will amplify both VHF and UHF signals. Connect the antenna to the combined input of the CM 7778HD and both VHF and UHF signals will be amplified. The CM 7778HD also has a switchable gain control. In your case supplying multiple TV locations set the gain switch to the high position. Remove the 4 screws on the bottom cover of the preamplifier. You will see 3 switches. One switch will have the option of (L) for low gain and (H) for high gain. Set it to (H). Leave the other two switches as they are set from the factory.

Switch #1. Combined or Separate input. Set to combined the preamplifier input labeled combined will amplify both VHF and UHF signals. Set to separate the preamplifier input labeled VHF will amplify VHF and the input labeled UHF will amplify UHF signals.

Switch #2. FM trap. Factory preset to the (IN) position. If the antenna in use will be used for FM reception set the switch to the (OUT) position.

Switch #3. This is the (High) or (LOW) gain switch.. In weaker signal areas when supplying multiple TV locations set this switch to the (H) position.



Inside view of the Channel Master 7778HD preamplifier with the bottom cover removed.

Inside view of the Channel Master 7778HD preamplifier


Channel Master 7778HD preamplifier

Channel Master 7778HD preamplifier

More Information Here