Question 1

Did you lose any channels before/after this amp?

Accepted Answer

My TV has a signal input on it and sometimes I would lose a channel because it was not strong enough.  This amp boosted it so that does not happen.

Question 2

What’s the in- out switch for?

Accepted Answer

Following info below is from Amazon's description on their web site. The switch is for the "FM Trap" function. I assume, but do not know, it compensates for FM interference when present. If used the same unit for 25 years and replaced it with the new model last week. It fixed my problem (dead or dying DA) and I am back in business. I have never used the FM Trap. I sometimes had it "IN" and sometimes "OUT" and could never see a difference.

Product description
Installation steps:1-Connect amplifier as per this diagram. 2-This amplifier can not be used with TiVo. 3-Performance varies from one location to another. 4-Adjusting the gain control clockwise increases your signal strength. 5-In most cases the FM trap should be set to the IN position. ● Switchable FM Trap ● 75 OHM Input ● 75 OHM Output ● 117V Power Source ● Lightning Protection ● Heavy Metal Case ● Low Noise ● Integrated Circuit ● Gain db ● 40 VHF- 36 UHF ● Noise Figure db ● Low 5.4- Hight 6.2-UHF 14 ● FM Trap Attenuation-20 db 95-108 MHz ● Adjustable Gain control Installation instructions: 1.Connect coaxial cable from antenna/ cable to amplifier input. 2.Connect coaxial cable form output to TV set. 3.If connecting more than one TV, use a splitter between amplifier output and TV. 4.Use gain control to increase signal (turn clockwise) or reduce signal (turn counter clockwise). 5.FM trap is used to eliminate FM interference. In most cases slide switch to (IN) position. 6.Red light indicates that the amplifier is plugged into 110 volt outlet. 7.Amplifier performance varies from one location to another. 8.This amplifier generally WILL NOT WORK WITH TIVO. 9.Check the back of amplifier package for specifications and installation diagram. 10. Works with cable modems. 11. Amplifies indoor/outdoor antenna and cable signals for best reception.

Question 3

Can anyone tell me if this diminishes vhf in favor of uhf? [the cda4 channel master does]

Accepted Answer

This type of amplifier will boost EVERYTHING nearly equally -- VHF, FM, UHF, Cellphone "LTE" noise, etc.

Question 4

will this work with pingbingding ampified anntena?

Accepted Answer

If it is a standard antenna and uses the standard cable & connection, I am sure it will work. I own three of these. Very strong little amp.

Asin	B07JJMZ18F
Best Sellers Rank	#42,557 in Electronics (See Top 100 in Electronics) #98 in Audio/Video Receivers & Amplifiers
Brand Name	Nippon America
Customer Reviews	3.7 3.7 out of 5 stars (982) 3.7 out of 5 stars
Manufacturer	Nippon America
Model	KF-235
Mounting Type	Surface Mount
Number Of Channels	1
Number Of Items	1
Operating Temperature	10 °C
Package Type Name	box or envelope
Part Number	KF-235 FBA.
Specification Met	FCC
Unit Count	1 Count
Upc	784644712542

36 DB Cable Antenna Color TV Booster Signal Amplifier VHF UHF FM HDTV

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