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lpost

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  1. Live from Home Instead of Live from Here with Chris Thile (local Oceanside boy made the big time) they're doing Live from Home
  2. Try a DOCSIS 3.1 modem with separate router and separate wifi (if they are combined now).
  3. Wouldn't it be easier to simply try both locations and listen?
  4. I would replace the SFPs and be done with it. These work great, I prefer 12dB receive attenuator on each end, but they work just fine with a few meter patch. https://www.fs.com/products/12674.html https://www.fs.com/products/48527.html https://www.fs.com/products/68297.html - 5m is a nice minimum for these SFP made to shoot 10km.
  5. It's only been a couple hours but I must say I'm impressed with the LX 1310nm transceivers with 12dB attenuators. It worked without attenuators, of course, but there is an 'ease' with them in vs. without. I listened for 30 mins. or so before pulling the server to clean it out and add...EMI absorption. I was needing to pull my server off the rack and clean it as it's been nearly 2 years since installed. While grounded I used a static-free brush and a blower to clean it all out. It wasn't as dirty as I thought, it's fan-less, but still I feel better with it clean. I must add I broke the cardinal rule of change only one thing at a time but the effort to move a 70lbs server is significant for me. I added a good number of 3M AB5020 Adhesive EMI Absorber to many components within the server. I've read not to over do it, but I don't understand how more radiated interference within the box could be a good thing vs. less. Again, conserving effort, I put a layer on every cap head, IC with or without a smooth aluminum heatsink and probably most importantly, numerous layers between and either side of the memory modules. I just set the strips on each side as opposed to sticking them on the memory as I'll be trying some APacer modules soon. I can recommend both tweaks as worthwhile and both are quite inexpensive by any standard let alone audiophilla standards.
  6. They do, unless you're running Linux, their is a driver override. FS.com sells one Intel compatible SFP.
  7. Just a heads up, the HP NC522SFP is one really hot running card and is not compatible with AMD processors at all. Like burn your fingers hot...the Intel X520 DA2 is alternative <$40.
  8. I'll have the parts I ordered by the end of next week. Perhaps the primary difference is LED vs laser. SX transceivers get away with LED for the light source, while LX and ZX et al use lasers. I purchased 4dB and 12dB attenuators just for fun to try. These were the only ones that were in US warehouse for quick ship, otherwise they come from Asia and that could take weeks with the current virus situation. So, I'll be comparing SX (850nm) LED to LX (1310nm) 10k lasers with and without attenuation over a 5m single mode patch. My path is Cisco 2960G (AV switch) feeds ER B-side > A-side SFP out to Pink Faun 2.16 PCIe fiber NIC. It's sounding astoundingly good and I'll be impressed if the LX improves things further but for $75 I was willing to run the experiment. I'll follow up in a couple weeks
  9. How about some lesser dB attenuators on LX? ZX is WAY powerful (40KM) and if it sounds better with 10dB of attenuation, it follows that LX (10KM) would be affected by say 2-5dB attenuation. At $3 each, I'm going to pick up an assortment to try but I'm only going with 1310nm LX (10KM) and a 10m SMF patch.
  10. Have you successfully run Intel X520-DA1 with other branded SFP? FS.Com only has a couple 'Intel' SFP to choose from... Looks like I can simply force it 'unsupported' via: In /etc/modprobe.d/ixgbe.confoptions ixgbe allow_unsupported_sfp=1,1 <-BOTH ports
  11. Well no luck. The card is not seen by the kernel and it get's very hot very quickly. It's way old. Anyone know of a reasonably priced/cheap PCIe card with a single open SFP that Archlinux has a driver included? A model that is a few years old will do fine.
  12. Minimum 2M cable. Power specs listed. https://www.cisco.com/c/en/us/products/collateral/interfaces-modules/fast-ethernet-sfp-modules/product_data_sheet0900aecd801f931c.html
  13. I've got a long-since retired HP 10Ge dual SFP+ nic (found it in a cabinet in our storage room at the office) that I first need to be sure Archlinux has drivers for...if it does, I'll try some of the 1310nm and perhaps 1550nm transceivers and patch. It appears that OM3-OM5 support 850-1300nm. I may also try 100Mb SFP 1310nm as I've got fiber to my server thus the ER is B-A and fed at 100Mb. Lots of combos to try, awesome that fs.com has transceivers for so cheap. I'm thinking these low power, only 2KM, 100Mb could be the ticket. Shouldn't need attenuators but who knows how many ma they draw, could be less efficient that newer but could be less as it operates so 'slowly'. https://www.fs.com/products/23583.html
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