Cable length limitation for the motorized dish?

[cysat]

I have a question regarding the cable length for the motorized dish system. This is what I have:

Fortec 90 cm dish
Fortec Lifetime clasic NA receiver
Stab HH90 motor
Sadoun FSKU-V universal dual LNBF

I also have to use two combiner/diplexer to combine Sat and TV-Antenna signals to one coaxcial cable from outside to the house and then split them again, one to the Fortec receiver, and one to TV directly.

Question/concern I have is that, from your peoples experience and knowledge, how long the coaxcial cable can be so that

1) Sat signal is not deteriating to the level that impact the viewing video quality.

2) the Stab HH90 motor DC power (from the Fortec receiver) is not impacted to the degree that will affact the horsepower the motor needs for its acturate movement when I switch from one viewing satellite to another.

3) If I use an in-line amplifier (20db gain) for the Sat signal (connected between the Fortec receiver and the HH motor), will it help the situation (ie. question 1 and 2)?

4) the coaxcial cable I have is RG-6.

I could test it by myself, but thought I would love to hear from your experts first before I mess with it. I have been amazed (and greatly appreciated) by the knowledge and help you guys provided over this Tech Forum.

Thanks in advance.

Jack

[wejones]

Originally Posted by cysat

I have a question regarding the cable length for the motorized dish system. This is what I have:

Fortec 90 cm dish
Fortec Lifetime clasic NA receiver
Stab HH90 motor
Sadoun FSKU-V universal dual LNBF

I also have to use two combiner/diplexer to combine Sat and TV-Antenna signals to one coaxcial cable from outside to the house and then split them again, one to the Fortec receiver, and one to TV directly.

Question/concern I have is that, from your peoples experience and knowledge, how long the coaxcial cable can be so that

1) Sat signal is not deteriating to the level that impact the viewing video quality.

2) the Stab HH90 motor DC power (from the Fortec receiver) is not impacted to the degree that will affact the horsepower the motor needs for its acturate movement when I switch from one viewing satellite to another.

3) If I use an in-line amplifier (20db gain) for the Sat signal (connected between the Fortec receiver and the HH motor), will it help the situation (ie. question 1 and 2)?

4) the coaxcial cable I have is RG-6.

I could test it by myself, but thought I would love to hear from your experts first before I mess with it. I have been amazed (and greatly appreciated) by the knowledge and help you guys provided over this Tech Forum.

Thanks in advance.

Jack

Re sat signal, I'm going 250 feet or so with no problem (one dish a bit more than that, and one a bit less). An in-line amplifier will almost never help, unless you are at least up above 300'.
Re running the motor, I'm guessing the limitation might be more of an issue, but again, my motorized dishes are up around 250' and they work OK.
I don't know if an inline amp or a diplexer will affect the operation of a motor, but I'd guess that this would be more of an issue than line length. I've never used a satellite diplexer that passed DC, so I'm not sure how well they work.

[yuzhanin]

Originally Posted by wejones

I don't know if an inline amp or a diplexer will affect the operation of a motor, but I'd guess that this would be more of an issue than line length. I've never used a satellite diplexer that passed DC, so I'm not sure how well they work.

I am a total newbie in this field and am not familiar with the specific LNB, but in general, is it possible to install the amp between the motor and the LNB (instead of between the motor and the receiver)?

[rainman]

Originally Posted by yuzhanin

I am a total newbie in this field and am not familiar with the specific LNB, but in general, is it possible to install the amp between the motor and the LNB (instead of between the motor and the receiver)?

usually you want to install a amp half way between the receiver and lnb.

[cysat]

Does anyone have more to share on the original post? Especially on the impact on the motor for the in-line amplifier and the diplexer along with the length of the coaxcial cable.

[cysat]

Thought to give an update on this subject as a followup to my initial posting to share my experience with someone who are interested.

My total coaxial cable length is about 150' with an in-line amplifier 20' away from the LNB (actual the HH motor output) and two diplexer (one for combining and one for uncombining with the ANT signal). The setup was flawless and worked like a charm. The signal quality is great and the motor moves smoothly as well.