| Author |
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Lucas Tam
Guest
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 Posted:
Fri Mar 11, 2005 1:57 am Post subject:
Re: RG-59 & Amplifier? |
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Tomi Holger Engdahl <then@solarflare.cs.hut.fi> wrote in
news:lajbr9roo82.fsf@solarflare.cs.hut.fi:
| Quote: | I based my answer on the information found on the
given web page address. And that information web page
did not specify that is indeed bidirectional amplifier.
The product web page could have been more informational
on this...
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Actually it does specify it's bi-directional ; )
Return Passband 5-42 MHz
5-65 MHz
In esscence all bi-directional amps forward these frequencies back to the
headend. Non bi-directional amps don't have a return bandpass : )
--
Lucas Tam (REMOVEnntp@rogers.com)
Please delete "REMOVE" from the e-mail address when replying.
http://members.ebay.com/aboutme/coolspot18/ |
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Ed Nielsen
Guest
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| Posted:
Fri Mar 11, 2005 8:01 am Post subject:
Re: RG-59 & Amplifier? |
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In the USA, it's 5-42MHz. A 5-65MHz amp would be absolutely useless.
CIAO!
Ed N.
Lucas Tam wrote:
| Quote: | Actually it does specify it's bi-directional ; )
Return Passband 5-42 MHz
5-65 MHz
In esscence all bi-directional amps forward these frequencies back to the
headend. Non bi-directional amps don't have a return bandpass : )
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Tomi Holger Engdahl
Guest
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| Posted:
Fri Mar 11, 2005 8:01 am Post subject:
Re: RG-59 & Amplifier? |
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Ed Nielsen <egnlsn@comcast.net> writes:
| Quote: | In the USA, it's 5-42MHz. A 5-65MHz amp would be absolutely useless.
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To my knowledge 5-65 MHz is used on some cable TV networks in Europe.
I think HTV in Finland uses it, at least at some parts of it's
network. Having more bandwidth for return channel allows more
bidirectional traffic in the network.
| Quote: | CIAO!
Ed N.
Lucas Tam wrote:
Actually it does specify it's bi-directional ; )
Return Passband 5-42 MHz
5-65 MHz In esscence all bi-directional amps
forward these frequencies back to the headend. Non bi-directional
amps don't have a return bandpass : )
|
--
Tomi Engdahl (http://www.iki.fi/then/)
Take a look at my electronics web links and documents at
http://www.epanorama.net/ |
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James Knott
Guest
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| Posted:
Fri Mar 11, 2005 6:10 pm Post subject:
Re: RG-59 & Amplifier? |
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Tomi Holger Engdahl wrote:
| Quote: | In the USA, it's 5-42MHz. A 5-65MHz amp would be absolutely useless.
To my knowledge 5-65 MHz is used on some cable TV networks in Europe.
I think HTV in Finland uses it, at least at some parts of it's
network. Having more bandwidth for return channel allows more
bidirectional traffic in the network.
|
In North America, Channel 2 starts at 56 MHz, so a return amp that reaches
65 MHz would block the lower channels. |
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Ed Nielsen
Guest
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| Posted:
Fri Mar 11, 2005 7:10 pm Post subject:
Re: RG-59 & Amplifier? |
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That would be 54MHz.
CIAO!
Ed N.
James Knott wrote:
| Quote: | In North America, Channel 2 starts at 56 MHz, so a return amp that reaches
65 MHz would block the lower channels.
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James Knott
Guest
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| Posted:
Fri Mar 11, 2005 10:14 pm Post subject:
Re: RG-59 & Amplifier? |
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Ed Nielsen wrote:
| Quote: | That would be 54MHz.
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Quite so. Typo on my part.
Most people are not aware, that there used to be a channel 1 in North
America, but it was reallocated, due to interference problems. The 50-54
MHz spectrum is now the 6 M amateur radio band. |
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Ed Nielsen
Guest
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| Posted:
Sat Mar 12, 2005 9:08 pm Post subject:
Re: RG-59 & Amplifier? |
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Yes, a rather interesting history behind Channel 1. For a bit more
detail, go to <http://www.cencom94.com/Download.html> and download
"Whatever happened to Channel ?" Some other good downloads there, as
well. Some pretty good stuff on the "Links" page, also.
CIAO!
Ed
James Knott wrote:
| Quote: | Quite so. Typo on my part.
Most people are not aware, that there used to be a channel 1 in North
America, but it was reallocated, due to interference problems. The 50-54
MHz spectrum is now the 6 M amateur radio band.
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Tomi Holger Engdahl
Guest
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| Posted:
Sun Mar 13, 2005 5:54 pm Post subject:
Re: RG-59 & Amplifier? |
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James Knott <james.knott@rogers.com> writes:
| Quote: | Tomi Holger Engdahl wrote:
In the USA, it's 5-42MHz. A 5-65MHz amp would be absolutely useless.
To my knowledge 5-65 MHz is used on some cable TV networks in Europe.
I think HTV in Finland uses it, at least at some parts of it's
network. Having more bandwidth for return channel allows more
bidirectional traffic in the network.
In North America, Channel 2 starts at 56 MHz, so a return amp that reaches
65 MHz would block the lower channels.
|
It is true that using 5-65 MHz as return channel will block several
lowers channels on the cable. And indeed here it does that.
But that's not too much of a problem, because those are generally
to much used and there are lots of channels on the higher frequencies.
--
Tomi Engdahl (http://www.iki.fi/then/)
Take a look at my electronics web links and documents at
http://www.epanorama.net/ |
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Lucas Tam
Guest
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| Posted:
Mon Mar 14, 2005 6:05 pm Post subject:
Re: RG-59 & Amplifier? |
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Ed Nielsen <egnlsn@comcast.net> wrote in news:XN6dnYoUcqJnkqzfRVn-
jg@comcast.com:
| Quote: | In the USA, it's 5-42MHz. A 5-65MHz amp would be absolutely useless.
CIAO!
Ed N.
Lucas Tam wrote:
Actually it does specify it's bi-directional ; )
Return Passband 5-42 MHz
5-65 MHz
|
Yup, I believe Electroline sells 2 version of this amp, but I haven't seen
the 5-65mhz model before... I believe most that are on eBay are the 5-42
MHz version.
--
Lucas Tam (REMOVEnntp@rogers.com)
Please delete "REMOVE" from the e-mail address when replying.
http://members.ebay.com/aboutme/coolspot18/ |
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