my dish set up, but must take it down now - Page 2 - Techwatch Support Forums: Digital & Satellite TV, FTA, Cable, Computers, Mobile Phones, Apple and General Tech Forums

Iravik · 05-09-07, 04:00 PM

Quote:

Originally Posted by BGonaSTICK

Looking good!

How on Earth do you find time to visit the forum?!

it must be lots of coffee and phosphoric acid

not sure if it's the right place to ask, if not will post to another section, but:
With all my interconnections and flexibility to route different bits of cable there and back between rooms I ended up with quite a few F-F joints. If I am to believe a specialist, each F-F coupler takes about 20% of the signal.

1. is it true?
2. can then in-line amplifier be placed somewhere and disecq motor and or switch still work in such setup?

BGonaSTICK · 05-09-07, 06:43 PM

Would be better in another thread, but briefly:

F connectors vary, but a coupler is almost two joints. Maybe somewhere nearer 10% would be more accurate. I'm definitely not an expert.

An amplifier might give you a little of that back, but I doubt it would be worth the expense, or even give you a noticeable improvement.

I really try and minimise joints, but sometimes they're unavoidable. That's why I don't like to use wallplates. In the real world, I might notice a 2% indicated signal drop by adding a connector, but that's not very scientific I guess.

So don't panic, just minimise.

RocketMBA · 05-09-07, 07:37 PM

Supposedly, a joint loses you something like 3dB, but my single joint loses me about 1...

BGonaSTICK · 05-09-07, 07:46 PM

Yes, I've heard 3dB, but don't seem to experience that much at all. 3dB is quite a lot (... goes hunting for logarithmic tables and gets distracted by something else. Anything else in fact...)

Iravik · 06-09-07, 01:15 PM

Thanks all,
I'll have to join a number of couplers together and plot the signal dissipation graph, I just got to know. Oh, insistently got a question about different cables, but will post it in another thread.

Iravik · 17-09-07, 11:04 AM

I thought this thread was appropriate to post this in. a bit of history for you folks and wacky science. my favourite dish had a display of cosmos music and lights display nearly 2 months ago. here's a bit from the mag

BGonaSTICK · 17-09-07, 02:07 PM

Wacky but 8)

ltmltm · 07-10-07, 12:52 AM

whooo that thing is huge i wonder what you could get with that thing
SKY pluto anyone?

Analoguesat · 18-10-07, 09:19 AM

Quote:

Originally Posted by BGonaSTICK

Yes, I've heard 3dB, but don't seem to experience that much at all. 3dB is quite a lot (... goes hunting for logarithmic tables and gets distracted by something else. Anything else in fact...)

A 3dB drop is 50% ! Which is one hell of a loss.....

noikz · 19-10-07, 01:06 AM

We used to get dragged to Jodrell Bank every year with school (it's only down the road). I have to say I preferred the trips to Alton Towers more.

05-09-07, 06:43 PM	#12 (permalink)
BGonaSTICK Dodgy Geezer Join Date: Nov 2005 Location: Brighton Posts: 9,718 Thanks: 3 Thanked 163 Times in 57 Posts	Re: my dish set up, but must take it down now Would be better in another thread, but briefly: F connectors vary, but a coupler is almost two joints. Maybe somewhere nearer 10% would be more accurate. I'm definitely not an expert. An amplifier might give you a little of that back, but I doubt it would be worth the expense, or even give you a noticeable improvement. I really try and minimise joints, but sometimes they're unavoidable. That's why I don't like to use wallplates. In the real world, I might notice a 2% indicated signal drop by adding a connector, but that's not very scientific I guess. So don't panic, just minimise. __________________ Dreambox 7000, Skystar2 PCI, Skystar USB, Fibo 90cm on Moteck SG2100, Triax TD110 multi-LNB. Sky + ART cards. 45.0°E - 58.0°W

05-09-07, 07:37 PM	#13 (permalink)
RocketMBA As fun as having the flu Join Date: Jun 2007 Location: A cardboard box Posts: 626 Thanks: 0 Thanked 0 Times in 0 Posts	Re: my dish set up, but must take it down now Supposedly, a joint loses you something like 3dB, but my single joint loses me about 1...

05-09-07, 07:46 PM	#14 (permalink)
BGonaSTICK Dodgy Geezer Join Date: Nov 2005 Location: Brighton Posts: 9,718 Thanks: 3 Thanked 163 Times in 57 Posts	Re: my dish set up, but must take it down now Yes, I've heard 3dB, but don't seem to experience that much at all. 3dB is quite a lot (... goes hunting for logarithmic tables and gets distracted by something else. Anything else in fact...) __________________ Dreambox 7000, Skystar2 PCI, Skystar USB, Fibo 90cm on Moteck SG2100, Triax TD110 multi-LNB. Sky + ART cards. 45.0°E - 58.0°W

06-09-07, 01:15 PM	#15 (permalink)
Iravik Member Join Date: Jun 2007 Posts: 47 Thanks: 0 Thanked 0 Times in 0 Posts	Re: my dish set up, but must take it down now Thanks all, I'll have to join a number of couplers together and plot the signal dissipation graph, I just got to know. Oh, insistently got a question about different cables, but will post it in another thread. __________________ Triax TD88, DiSEqC 1.2 Moteck SG2100A, Smart 0.3 twin LNB, 100s of meters of cabling

17-09-07, 11:04 AM	#16 (permalink)
Iravik Member Join Date: Jun 2007 Posts: 47 Thanks: 0 Thanked 0 Times in 0 Posts	Re: my dish set up, but must take it down now I thought this thread was appropriate to post this in. a bit of history for you folks and wacky science. my favourite dish had a display of cosmos music and lights display nearly 2 months ago. here's a bit from the mag __________________ Triax TD88, DiSEqC 1.2 Moteck SG2100A, Smart 0.3 twin LNB, 100s of meters of cabling

17-09-07, 02:07 PM	#17 (permalink)
BGonaSTICK Dodgy Geezer Join Date: Nov 2005 Location: Brighton Posts: 9,718 Thanks: 3 Thanked 163 Times in 57 Posts	Re: my dish set up, but must take it down now Wacky but 8) __________________ Dreambox 7000, Skystar2 PCI, Skystar USB, Fibo 90cm on Moteck SG2100, Triax TD110 multi-LNB. Sky + ART cards. 45.0°E - 58.0°W

07-10-07, 12:52 AM	#18 (permalink)
ltmltm Senior Member Join Date: Jun 2007 Posts: 134 Thanks: 0 Thanked 9 Times in 9 Posts	Re: my dish set up, but must take it down now whooo that thing is huge i wonder what you could get with that thing SKY pluto anyone? __________________ 65cm AWESOME Dish, Titanium lnb, Echolink EL-777 30w to 42e with my hand as a motor

19-10-07, 01:06 AM	#20 (permalink)
noikz John Ross Ewing Join Date: Aug 2007 Location: Cheshire Posts: 232 Thanks: 1 Thanked 4 Times in 3 Posts	Re: my dish set up, but must take it down now We used to get dragged to Jodrell Bank every year with school (it's only down the road). I have to say I preferred the trips to Alton Towers more. __________________ DM800 + DM7020 with TD110 Moto 57E-61W \| DM500+TD88 13/16/19.2E/28.E \| Sky HD + Sky+ \| S/Star HD