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Galvonic isolator position
where should the galvonic isolator be positioned in relation to a
virginmedia modem/router?.....I relocated the box to the upper floor of the house using a good coax leaving the isolator down stairs this seemed to cause problems with my internet connection idea why? |
Galvonic isolator position
On 06/11/2020 11:52, jim.gm4dhj wrote:
where should the galvonic isolator be positioned in relation to a virginmedia modem/router?.....I relocated the box to the upper floor of the house using a good coax leaving the isolator down stairs this seemed to cause problems with my internet connection idea why? Depends on where you have the dilithium crystals. |
Galvonic isolator position
newshound wrote:
On 06/11/2020 11:52, jim.gm4dhj wrote: where should the galvonic isolator be positioned in relation to a virginmedia modem/router?.....I relocated the box to the upper floor of the house using a good coax leaving the isolator down stairs this seemed to cause problems with my internet connection idea why? Depends on where you have the dilithium crystals. Just keep them away from the flux capacitor... Tim -- Please don't feed the trolls |
Galvonic isolator position
On 06/11/2020 13:18, newshound wrote:
On 06/11/2020 11:52, jim.gm4dhj wrote: where should the galvonic isolator be positioned in relation to a virginmedia modem/router?.....I relocated the box to the upper floor of the house using a good coax leaving the isolator down stairs this seemed to cause problems with my internet connection idea why? Depends on where you have the dilithium crystals. And whether or not an unobtanium gasket is fitted.. -- Canada is all right really, though not for the whole weekend. "Saki" |
Galvonic isolator position
what a bunch of arseholes you three are.....
|
Galvonic isolator position
On 06/11/2020 14:35, Jim GM4DHJ ... wrote:
what a bunch of arseholes you three are..... never mind I have now located it upstairs just before the router/wifi and all is well .....thanks for nothing |
Galvonic isolator position
On 06/11/2020 14:35, Jim GM4DHJ ... wrote:
what a bunch of arseholes you three are..... You can always count on Jim to "bite"! |
Galvonic isolator position
On 06/11/2020 15:06, newshound wrote:
On 06/11/2020 14:35, Jim GM4DHJ ... wrote: what a bunch of arseholes you three are..... You can always count on Jim to "bite"! and why not ... |
Galvonic isolator position
On 06/11/2020 15:07, Jim GM4 DHJ ... wrote:
On 06/11/2020 15:06, newshound wrote: On 06/11/2020 14:35, Jim GM4DHJ ... wrote: what a bunch of arseholes you three are..... You can always count on Jim to "bite"! and why not ... you ask a simple question and all you get is a bunch of jokers.... |
Galvonic isolator position
On 06/11/2020 15:00, Jim GM4DHJ ... wrote:
On 06/11/2020 14:35, Jim GM4DHJ ... wrote: what a bunch of arseholes you three are..... never mind I have now located it upstairs just before the router/wifi and all is well .....thanks for nothing Wow. send us a picture. No one here has ever seen a galvonic isolator -- "What do you think about Gay Marriage?" "I don't." "Don't what?" "Think about Gay Marriage." |
Galvonic isolator position
On 06/11/2020 15:15, The Natural Philosopher wrote:
On 06/11/2020 15:00, Jim GM4DHJ ... wrote: On 06/11/2020 14:35, Jim GM4DHJ ... wrote: what a bunch of arseholes you three are..... never mind I have now located it upstairs just before the router/wifi and all is well .....thanks for nothing Wow. send us a picture. No one here has ever seen a galvonic isolator OK friggin "Galvanic" then....happy?...jeeezuz |
Galvonic isolator position
On 06/11/2020 15:08, Jim GM4DHJ ... wrote:
On 06/11/2020 15:07, Jim GM4 DHJ ... wrote: On 06/11/2020 15:06, newshound wrote: On 06/11/2020 14:35, Jim GM4DHJ ... wrote: what a bunch of arseholes you three are..... You can always count on Jim to "bite"! and why not ... you ask a simple question and all you get is a bunch of jokers.... https://groups.google.com/g/uk.tech..../c/KEoNqvmm6H0 its alright you lot can **** off now you have had a laugh...... |
Galvonic isolator position
On 06/11/2020 15:38, Jim GM4DHJ ... wrote:
On 06/11/2020 15:08, Jim GM4DHJ ... wrote: On 06/11/2020 15:07, Jim GM4 DHJ ... wrote: On 06/11/2020 15:06, newshound wrote: On 06/11/2020 14:35, Jim GM4DHJ ... wrote: what a bunch of arseholes you three are..... You can always count on Jim to "bite"! and why not ... you ask a simple question and all you get is a bunch of jokers.... https://groups.google.com/g/uk.tech..../c/KEoNqvmm6H0 its alright you lot can **** off now you have had a laugh...... Brian Gaff to the rescue...tee hee |
Galvonic isolator position
In message , Jim GM4DHJ ...
writes On 06/11/2020 15:15, The Natural Philosopher wrote: On 06/11/2020 15:00, Jim GM4DHJ ... wrote: On 06/11/2020 14:35, Jim GM4DHJ ... wrote: what a bunch of arseholes you three are..... never mind I have now located it upstairs just before the router/wifi and all is well .....thanks for nothing Wow. send us a picture. No one here has ever seen a galvonic isolator OK friggin "Galvanic" then....happy?...jeeezuz You were just using the Paisley vernacular - weren't you, Jim. -- Ian |
Galvonic isolator position
On 06/11/2020 15:44, Ian Jackson wrote:
In message , Jim GM4DHJ ... writes On 06/11/2020 15:15, The Natural Philosopher wrote: On 06/11/2020 15:00, Jim GM4DHJ ... wrote: On 06/11/2020 14:35, Jim GM4DHJ ... wrote: what a bunch of arseholes you three are..... never mind I have now located it upstairs just before the router/wifiÂ* and all is well .....thanks for nothing Â*Wow. send us a picture. No one here has ever seen a galvonic isolator OK friggin "Galvanic" then....happy?...jeeezuz You were just using the Paisley vernacular - weren't you, Jim. A galvanic isolator is a way to prevent corrosion in boats. WTF is one doing in a Broadband setup? -- The biggest threat to humanity comes from socialism, which has utterly diverted our attention away from what really matters to our existential survival, to indulging in navel gazing and faux moral investigations into what the world ought to be, whilst we fail utterly to deal with what it actually is. |
Galvonic isolator position
On 06/11/2020 15:44, Ian Jackson wrote:
In message , Jim GM4DHJ ... writes On 06/11/2020 15:15, The Natural Philosopher wrote: On 06/11/2020 15:00, Jim GM4DHJ ... wrote: On 06/11/2020 14:35, Jim GM4DHJ ... wrote: what a bunch of arseholes you three are..... never mind I have now located it upstairs just before the router/wifiÂ* and all is well .....thanks for nothing Â*Wow. send us a picture. No one here has ever seen a galvonic isolator OK friggin "Galvanic" then....happy?...jeeezuz You were just using the Paisley vernacular - weren't you, Jim. no I misread the friggin' name...dead funny.... |
Galvonic isolator position
On 06/11/2020 15:46, The Natural Philosopher wrote:
On 06/11/2020 15:44, Ian Jackson wrote: In message , Jim GM4DHJ ... writes On 06/11/2020 15:15, The Natural Philosopher wrote: On 06/11/2020 15:00, Jim GM4DHJ ... wrote: On 06/11/2020 14:35, Jim GM4DHJ ... wrote: what a bunch of arseholes you three are..... never mind I have now located it upstairs just before the router/wifiÂ* and all is well .....thanks for nothing Â*Wow. send us a picture. No one here has ever seen a galvonic isolator OK friggin "Galvanic" then....happy?...jeeezuz You were just using the Paisley vernacular - weren't you, Jim. A galvanic isolator is a way to prevent corrosion in boats. WTF is one doing in a Broadband setup? why bother replying when if you don't know....**** orft .... |
6th Nov (Was : Galvonic isolator position)
On 06/11/2020 14:35, Jim GM4DHJ ... wrote:
what a bunch of arseholes you three are..... The morning of 6th November, at the Junior School ... Well, children! What did you do on Bonfire Night? --- Please Miss! Please Miss! (Cautiously) Yes Johnnie? --- Please Miss, we shoved penny bangers up frogs' arseholes! Rectum, Johnnie! Rectum, Johnnie! --- Wrecked 'em, Miss? It f***ing blew them to bits! |
6th Nov (Was : Galvonic isolator position)
On 06/11/2020 15:55, gareth evans wrote:
On 06/11/2020 14:35, Jim GM4DHJ ... wrote: what a bunch of arseholes you three are..... The morning of 6th November, at the Junior School ... Well, children! What did you do on Bonfire Night? --- Please Miss! Please Miss! (Cautiously) Yes Johnnie? --- Please Miss, we shoved penny bangers up frogs' arseholes! Rectum, Johnnie! Rectum, Johnnie! --- Wrecked 'em, Miss? It f***ing blew them to bits! Oops! Missed that it was also X-posted to URA :-( |
6th Nov (Was : Galvonic isolator position)
On 06/11/2020 15:55, gareth evans wrote:
On 06/11/2020 14:35, Jim GM4DHJ ... wrote: what a bunch of arseholes you three are..... The morning of 6th November, at the Junior School ... Well, children! What did you do on Bonfire Night? --- Please Miss!Â* Please Miss! (Cautiously) Yes Johnnie? --- Please Miss, we shoved penny bangers up frogs' arseholes! Rectum, Johnnie!Â* Rectum, Johnnie! --- Wrecked 'em, Miss? It f***ing blew them to bits! tee hee |
Galvonic isolator position
Jim GM4DHJ ... wrote:
On 06/11/2020 15:07, Jim GM4 DHJ ... wrote: On 06/11/2020 15:06, newshound wrote: On 06/11/2020 14:35, Jim GM4DHJ ... wrote: what a bunch of arseholes you three are..... You can always count on Jim to "bite"! and why not ... you ask a simple question and all you get is a bunch of jokers.... Why does someone who passed the RAE need to ask. |
Galvonic isolator position
On 06/11/2020 16:34, Radio Man wrote:
Jim GM4DHJ ... wrote: On 06/11/2020 15:07, Jim GM4 DHJ ... wrote: On 06/11/2020 15:06, newshound wrote: On 06/11/2020 14:35, Jim GM4DHJ ... wrote: what a bunch of arseholes you three are..... You can always count on Jim to "bite"! and why not ... you ask a simple question and all you get is a bunch of jokers.... Why does someone who passed the RAE need to ask. yes...never heard of it before... |
Galvonic isolator position
On 06/11/2020 16:34, Radio Man wrote:
Jim GM4DHJ ... wrote: On 06/11/2020 15:07, Jim GM4 DHJ ... wrote: On 06/11/2020 15:06, newshound wrote: On 06/11/2020 14:35, Jim GM4DHJ ... wrote: what a bunch of arseholes you three are..... You can always count on Jim to "bite"! and why not ... you ask a simple question and all you get is a bunch of jokers.... Why does someone who passed the RAE need to ask. so tell me smart arse why the position of it fecked up my internet ? |
Galvonic isolator position
On Friday, 6 November 2020 16:58:29 UTC, Jim GM4 DHJ ... wrote:
On 06/11/2020 16:34, Radio Man wrote: Jim GM4DHJ ... wrote: On 06/11/2020 15:07, Jim GM4 DHJ ... wrote: On 06/11/2020 15:06, newshound wrote: On 06/11/2020 14:35, Jim GM4DHJ ... wrote: what a bunch of arseholes you three are..... You can always count on Jim to "bite"! and why not ... you ask a simple question and all you get is a bunch of jokers.... Why does someone who passed the RAE need to ask. so tell me smart arse why the position of it fecked up my internet ? Maybe you don't even need a galvanic isolator. The ethernet sockets are transformer coupled, so they don't need extra isolation and the mains will almost certainly be double insulated with no earth connection so what is there to isolate? John |
Galvonic isolator position
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Galvonic isolator position
On 06/11/2020 18:10, Brian Morrison wrote:
On Fri, 06 Nov 2020 15:46:20 +0000, The Natural Philosopher wrote: A galvanic isolator is a way to prevent corrosion in boats. WTF is one doing in a Broadband setup? It is used to disconnect the internal equipment from the external broadband cabinet and equipment. It also acts to prevent ground loops via the coax cable that supplies the cable broadband signal. It might be what everyone else calls a braid breaker. Putting it in the 'wrong' position might cause a change in SNR, that depends on exact details of the property and wiring. Jim clearly upset it initially and then fixed it again. I think that is exactly what happened.....thank supreme being for somebody who knows what they are talking about,,, |
Galvonic isolator position
In article rir.org.uk,
Brian Morrison wrote: On Fri, 06 Nov 2020 15:46:20 +0000, The Natural Philosopher wrote: A galvanic isolator is a way to prevent corrosion in boats. WTF is one doing in a Broadband setup? It is used to disconnect the internal equipment from the external broadband cabinet and equipment. It also acts to prevent ground loops via the coax cable that supplies the cable broadband signal. It might be what everyone else calls a braid breaker. Putting it in the 'wrong' position might cause a change in SNR, that depends on exact details of the property and wiring. Yes, the cable cabinet and the house might be on different phases. -- from KT24 in Surrey, England "I'd rather die of exhaustion than die of boredom" Thomas Carlyle |
Galvonic isolator position
On 06/11/2020 18:47, charles wrote:
In article rir.org.uk, Brian Morrison wrote: On Fri, 06 Nov 2020 15:46:20 +0000, The Natural Philosopher wrote: A galvanic isolator is a way to prevent corrosion in boats. WTF is one doing in a Broadband setup? It is used to disconnect the internal equipment from the external broadband cabinet and equipment. It also acts to prevent ground loops via the coax cable that supplies the cable broadband signal. It might be what everyone else calls a braid breaker. Putting it in the 'wrong' position might cause a change in SNR, that depends on exact details of the property and wiring. Yes, the cable cabinet and the house might be on different phases. thanks this seems to be the problem |
Galvonic isolator position
In message , Jim GM4 DHJ ...
writes On 06/11/2020 18:47, charles wrote: In article rir.org.uk, Brian Morrison wrote: On Fri, 06 Nov 2020 15:46:20 +0000, The Natural Philosopher wrote: A galvanic isolator is a way to prevent corrosion in boats. WTF is doing in a Broadband setup? It is used to disconnect the internal equipment from the external broadband cabinet and equipment. It also acts to prevent ground loops via the coax cable that supplies the cable broadband signal. It might be what everyone else calls a braid breaker. Putting it in the 'wrong' position might cause a change in SNR, that depends on exact details of the property and wiring. Yes, the cable cabinet and the house might be on different phases. thanks this seems to be the problem Jim, I'm not quite sure what you're doing, but for the record the coax feed from the street cabinet, where it enters your house, will have a box where both the inner and outer of the coax have in-line blocking capacitors. These are large enough to pass 5MHz and above without attenuation, but progressively kill the lower frequencies down to DC. This is a requirement to protect you from any voltage present on the feed to you, and the system from any voltage you feed back into the system. -- Ian |
Galvonic isolator position
On 06/11/2020 18:10, Brian Morrison wrote:
On Fri, 06 Nov 2020 15:46:20 +0000, The Natural Philosopher wrote: A galvanic isolator is a way to prevent corrosion in boats. WTF is one doing in a Broadband setup? It is used to disconnect the internal equipment from the external broadband cabinet and equipment. It also acts to prevent ground loops via the coax cable that supplies the cable broadband signal. It might be what everyone else calls a braid breaker. Gosh. Ground loops. 50hz hum on a megahertz signal...Do you folks over on uk.radio.amateur actually have *any* electronic experience *at all*.? Putting it in the 'wrong' position might cause a change in SNR, that depends on exact details of the property and wiring. Jim clearly upset it initially and then fixed it again. The right position is in the bin, along with his tinfoil hat and quartz crystal pyramid knife sharpener -- €œIdeas are inherently conservative. They yield not to the attack of other ideas but to the massive onslaught of circumstance" - John K Galbraith |
Galvonic isolator position
On 06/11/2020 18:47, charles wrote:
In article rir.org.uk, Brian Morrison wrote: On Fri, 06 Nov 2020 15:46:20 +0000, The Natural Philosopher wrote: A galvanic isolator is a way to prevent corrosion in boats. WTF is one doing in a Broadband setup? It is used to disconnect the internal equipment from the external broadband cabinet and equipment. It also acts to prevent ground loops via the coax cable that supplies the cable broadband signal. It might be what everyone else calls a braid breaker. Putting it in the 'wrong' position might cause a change in SNR, that depends on exact details of the property and wiring. Yes, the cable cabinet and the house might be on different phases. So ****ing what? I am sure that my ISP is on 3 phases. -- €œA leader is best When people barely know he exists. Of a good leader, who talks little,When his work is done, his aim fulfilled,They will say, €œWe did this ourselves.€ €• Lao Tzu, Tao Te Ching |
6th Nov (Was : Galvonic isolator position)
On Fri, 6 Nov 2020 15:59:01 +0000, "Jim GM4DHJ ..."
wrote: On 06/11/2020 15:55, gareth evans wrote: On 06/11/2020 14:35, Jim GM4DHJ ... wrote: what a bunch of arseholes you three are..... The morning of 6th November, at the Junior School ... Well, children! What did you do on Bonfire Night? --- Please Miss!* Please Miss! (Cautiously) Yes Johnnie? --- Please Miss, we shoved penny bangers up frogs' arseholes! Rectum, Johnnie!* Rectum, Johnnie! --- Wrecked 'em, Miss? It f***ing blew them to bits! tee hee The oldies are the best. https://youtu.be/BpWjUzEFEf8?t=1415 |
Galvonic isolator position
In article , The Natural Philosopher
wrote: On 06/11/2020 18:10, Brian Morrison wrote: On Fri, 06 Nov 2020 15:46:20 +0000, The Natural Philosopher wrote: A galvanic isolator is a way to prevent corrosion in boats. WTF is one doing in a Broadband setup? It is used to disconnect the internal equipment from the external broadband cabinet and equipment. It also acts to prevent ground loops via the coax cable that supplies the cable broadband signal. It might be what everyone else calls a braid breaker. Gosh. Ground loops. 50hz hum on a megahertz signal...Do you folks over on uk.radio.amateur actually have *any* electronic experience *at all*.? Putting it in the 'wrong' position might cause a change in SNR, that depends on exact details of the property and wiring. Jim clearly upset it initially and then fixed it again. The right position is in the bin, along with his tinfoil hat and quartz crystal pyramid knife sharpener Interestingly, I had, in the analogue days, hum on my tv signal when it rained. Took a bit of tracing: VCR had a potential on it's earth which travelled up the downlead into my aerial combiner. When it rained it found a path to earth down the wall. There was a drop of about 3v between the output and input earths and this transferred itself to the wanted signal and ended up on the picture. Solved by grounding the input coax to the VCR. -- from KT24 in Surrey, England "I'd rather die of exhaustion than die of boredom" Thomas Carlyle |
Galvonic isolator position
In article , Ian Jackson
wrote: In message , Jim GM4 DHJ ... writes On 06/11/2020 18:47, charles wrote: In article rir.org.uk, Brian Morrison wrote: On Fri, 06 Nov 2020 15:46:20 +0000, The Natural Philosopher wrote: A galvanic isolator is a way to prevent corrosion in boats. WTF is doing in a Broadband setup? It is used to disconnect the internal equipment from the external broadband cabinet and equipment. It also acts to prevent ground loops via the coax cable that supplies the cable broadband signal. It might be what everyone else calls a braid breaker. Putting it in the 'wrong' position might cause a change in SNR, that depends on exact details of the property and wiring. Yes, the cable cabinet and the house might be on different phases. thanks this seems to be the problem Jim, I'm not quite sure what you're doing, but for the record the coax feed from the street cabinet, where it enters your house, will have a box where both the inner and outer of the coax have in-line blocking capacitors. These are large enough to pass 5MHz and above without attenuation, but progressively kill the lower frequencies down to DC. This is a requirement to protect you from any voltage present on the feed to you, and the system from any voltage you feed back into the system. But this might have failed in Jim's case. For my info - how does the phone signal get past the blocking capacitor? -- from KT24 in Surrey, England "I'd rather die of exhaustion than die of boredom" Thomas Carlyle |
Galvonic isolator position
On 06/11/2020 20:38, The Natural Philosopher wrote:
On 06/11/2020 18:10, Brian Morrison wrote: On Fri, 06 Nov 2020 15:46:20 +0000, The Natural Philosopher wrote: A galvanic isolator is a way to prevent corrosion in boats. WTF is one doing in a Broadband setup? It is used to disconnect the internal equipment from the external broadband cabinet and equipment. It also acts to prevent ground loops via the coax cable that supplies the cable broadband signal. It might be what everyone else calls a braid breaker. Gosh. Ground loops. 50hz hum on a megahertz signal...Do you folks over on uk.radio.amateur actually have *any* electronic experience *at all*.? Putting it in the 'wrong' position might cause a change in SNR, that depends on exact details of the property and wiring. Jim clearly upset it initially and then fixed it again. The right position is in the bin, along with his tinfoil hat and quartz crystal pyramid knife sharpener oh right...do you comply with anything people tell you to do?..... |
Galvonic isolator position
In message , charles
writes In article , Ian Jackson wrote: In message , Jim GM4 DHJ ... writes On 06/11/2020 18:47, charles wrote: In article rir.org.uk, Brian Morrison wrote: On Fri, 06 Nov 2020 15:46:20 +0000, The Natural Philosopher wrote: A galvanic isolator is a way to prevent corrosion in boats. WTF is doing in a Broadband setup? It is used to disconnect the internal equipment from the external broadband cabinet and equipment. It also acts to prevent ground loops via the coax cable that supplies the cable broadband signal. It might be what everyone else calls a braid breaker. Putting it in the 'wrong' position might cause a change in SNR, that depends on exact details of the property and wiring. Yes, the cable cabinet and the house might be on different phases. thanks this seems to be the problem Jim, I'm not quite sure what you're doing, but for the record the coax feed from the street cabinet, where it enters your house, will have a box where both the inner and outer of the coax have in-line blocking capacitors. These are large enough to pass 5MHz and above without attenuation, but progressively kill the lower frequencies down to DC. This is a requirement to protect you from any voltage present on the feed to you, and the system from any voltage you feed back into the system. But this might have failed in Jim's case. For my info - how does the phone signal get past the blocking capacitor? Virgin provides internet and TV at RF (5MHz to 1000+MHz, via coax) - and I was assuming that that was what Jim was talking about. Phone will be on twisted-pair phonelines. -- Ian |
Galvonic isolator position
Ian Jackson wrote:
In message , charles writes But this might have failed in Jim's case. For my info - how does the phone signal get past the blocking capacitor? Virgin provides internet and TV at RF (5MHz to 1000+MHz, via coax) - and I was assuming that that was what Jim was talking about. Phone will be on twisted-pair phonelines. Um, not in my house. Phone plugs into router (which only has a coax link to the outside world). Tim -- Please don't feed the trolls |
Galvonic isolator position
In article , Ian Jackson
wrote: In message , charles writes In article , Ian Jackson wrote: In message , Jim GM4 DHJ ... writes On 06/11/2020 18:47, charles wrote: In article rir.org.uk, Brian Morrison wrote: On Fri, 06 Nov 2020 15:46:20 +0000, The Natural Philosopher wrote: A galvanic isolator is a way to prevent corrosion in boats. WTF is doing in a Broadband setup? It is used to disconnect the internal equipment from the external broadband cabinet and equipment. It also acts to prevent ground loops via the coax cable that supplies the cable broadband signal. It might be what everyone else calls a braid breaker. Putting it in the 'wrong' position might cause a change in SNR, that depends on exact details of the property and wiring. Yes, the cable cabinet and the house might be on different phases. thanks this seems to be the problem Jim, I'm not quite sure what you're doing, but for the record the coax feed from the street cabinet, where it enters your house, will have a box where both the inner and outer of the coax have in-line blocking capacitors. These are large enough to pass 5MHz and above without attenuation, but progressively kill the lower frequencies down to DC. This is a requirement to protect you from any voltage present on the feed to you, and the system from any voltage you feed back into the system. But this might have failed in Jim's case. For my info - how does the phone signal get past the blocking capacitor? Virgin provides internet and TV at RF (5MHz to 1000+MHz, via coax) - and I was assuming that that was what Jim was talking about. Phone will be on twisted-pair phonelines. my daughter's house has just the one cable from Virgin - but maybe it's multicore. -- from KT24 in Surrey, England "I'd rather die of exhaustion than die of boredom" Thomas Carlyle |
Galvonic isolator position
On 06/11/2020 21:12, Ian Jackson wrote:
In message , charles writes In article , Ian Jackson wrote: In message , Jim GM4 DHJ ... writes On 06/11/2020 18:47, charles wrote: In article Â*Â*Â*Â* rir.org.uk, Â*Â*Â*Â* Brian Morrison wrote: On Fri, 06 Nov 2020 15:46:20 +0000, The Natural Philosopher wrote: A galvanic isolator is a way to prevent corrosion in boats. WTF is doing in a Broadband setup? It is used to disconnect the internal equipment from the external broadband cabinet and equipment. It also acts to prevent ground loops via the coax cable that supplies the cable broadband signal. It might be what everyone else calls a braid breaker. Putting it in the 'wrong' position might cause a change in SNR, that depends on exact details of the property and wiring. Â* Yes, the cable cabinet and the house might be on different phases. thanks this seems to be the problem Jim, I'm not quite sure what you're doing, but for the record the coax feed from the street cabinet, where it enters your house, will have a box where both the inner and outer of the coax have in-line blocking capacitors. These are large enough to pass 5MHz and above without attenuation, but progressively kill the lower frequencies down to DC. This is a requirement to protect you from any voltage present on the feed to you, and the system from any voltage you feed back into the system. But this might have failed in Jim's case. For my info - how does the phone signal get past the blocking capacitor? Virgin provides internet and TV at RF (5MHz to 1000+MHz, via coax) - and I was assuming that that was what Jim was talking about. Phone will be on twisted-pair phonelines. phone goes to a socket in the hall I dont use the phone sockets on the modem/router....there is just a splitter for the tv and the modem/router on the living room wall....my problem was the position of the isolator in relation to the router/wifi unit.....it totally buggered up the internet...dropped connection and wifi etc...all fine now -- Dantro, The Planet Man was an agent of the League of Planets who upholds peace and fair play. Like all agents of the League, he is forbidden to resort to violence, except in self defense. However, he is a skilled fighter, and he carries a sidearm at all times. He is a humanoid from Planeris Rex, and he was the first representative of the League to make contact with the humans of earth. He still has much to learn about human customs and sayings. He went on to save the solar system from the evil of Marston of Mars, and later had adventures beyond the solar system. |
Galvonic isolator position
On 06/11/2020 21:50, The Planet Man ... wrote:
On 06/11/2020 21:12, Ian Jackson wrote: In message , charles writes In article , Ian Jackson wrote: In message , Jim GM4 DHJ ... writes On 06/11/2020 18:47, charles wrote: In article Â*Â*Â*Â* rir.org.uk, Â*Â*Â*Â* Brian Morrison wrote: On Fri, 06 Nov 2020 15:46:20 +0000, The Natural Philosopher wrote: A galvanic isolator is a way to prevent corrosion in boats. WTF is doing in a Broadband setup? It is used to disconnect the internal equipment from the external broadband cabinet and equipment. It also acts to prevent ground loops via the coax cable that supplies the cable broadband signal. It might be what everyone else calls a braid breaker. Putting it in the 'wrong' position might cause a change in SNR, that depends on exact details of the property and wiring. Â* Yes, the cable cabinet and the house might be on different phases. thanks this seems to be the problem Jim, I'm not quite sure what you're doing, but for the record the coax feed from the street cabinet, where it enters your house, will have a box where both the inner and outer of the coax have in-line blocking capacitors. These are large enough to pass 5MHz and above without attenuation, but progressively kill the lower frequencies down to DC. This is a requirement to protect you from any voltage present on the feed to you, and the system from any voltage you feed back into the system. But this might have failed in Jim's case. For my info - how does the phone signal get past the blocking capacitor? Virgin provides internet and TV at RF (5MHz to 1000+MHz, via coax) - and I was assuming that that was what Jim was talking about. Phone will be on twisted-pair phonelines. phone goes to a socket in the hall I dont use the phone sockets on the modem/router....there is just a splitter for the tv and the modem/router on the living room wall....my problem was the position of the isolator in relation to the router/wifi unit.....it totally buggered up the internet...dropped connection and wifi etc...all fine now sorry that was me.... |
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