• Welcome to TechPowerUp Forums, Guest! Please check out our forum guidelines for info related to our community.

Using modems and coax instead of ethernet

Joined
Nov 16, 2007
Messages
1,166 (0.19/day)
Location
Hampton Roads
Processor Xeon x5650
Motherboard SABERTOOTH X58
Cooling Fans
Memory 24 GB Kingston HyperX 1600
Video Card(s) GTX 1060 3GB
Storage small ssd
Display(s) Dell 2001F, BenQ short throw
Case Lian Li
Audio Device(s) onboard
Power Supply X750
Software Mint 19.3, Win 10
Benchmark Scores not so fast...
I am trying to get rid of my cable ISP, and have secured a cellular modem that is faster and cheaper than my ISP. My rental house has coax throughout, so I was thinking of using modems to connect the upstairs to the downstairs, through the coax.

Is this possible?

4g USB modem---computer with ICS---Ethernet to modem---coax to next modem---Ethernet to network.
 
Joined
May 13, 2010
Messages
5,698 (1.12/day)
System Name RemixedBeast-NX
Processor Intel Xeon E5-2690 @ 2.9Ghz (8C/16T)
Motherboard Dell Inc. 08HPGT (CPU 1)
Cooling Dell Standard
Memory 24GB ECC
Video Card(s) Gigabyte Nvidia RTX2060 6GB
Storage 2TB Samsung 860 EVO SSD//2TB WD Black HDD
Display(s) Samsung SyncMaster P2350 23in @ 1920x1080 + Dell E2013H 20 in @1600x900
Case Dell Precision T3600 Chassis
Audio Device(s) Beyerdynamic DT770 Pro 80 // Fiio E7 Amp/DAC
Power Supply 630w Dell T3600 PSU
Mouse Logitech G700s/G502
Keyboard Logitech K740
Software Linux Mint 20
Benchmark Scores Network: APs: Cisco Meraki MR32, Ubiquiti Unifi AP-AC-LR and Lite Router/Sw:Meraki MX64 MS220-8P
You would need something called media over coax and that gets flaky sometimes.
 
Joined
Nov 16, 2007
Messages
1,166 (0.19/day)
Location
Hampton Roads
Processor Xeon x5650
Motherboard SABERTOOTH X58
Cooling Fans
Memory 24 GB Kingston HyperX 1600
Video Card(s) GTX 1060 3GB
Storage small ssd
Display(s) Dell 2001F, BenQ short throw
Case Lian Li
Audio Device(s) onboard
Power Supply X750
Software Mint 19.3, Win 10
Benchmark Scores not so fast...
Yeah, MoCa stuff isn't gonna do it. My cable box has the jacks, but the firmware is locked down. This cable company facking sucks. Bend broadband.
 
Joined
May 13, 2010
Messages
5,698 (1.12/day)
System Name RemixedBeast-NX
Processor Intel Xeon E5-2690 @ 2.9Ghz (8C/16T)
Motherboard Dell Inc. 08HPGT (CPU 1)
Cooling Dell Standard
Memory 24GB ECC
Video Card(s) Gigabyte Nvidia RTX2060 6GB
Storage 2TB Samsung 860 EVO SSD//2TB WD Black HDD
Display(s) Samsung SyncMaster P2350 23in @ 1920x1080 + Dell E2013H 20 in @1600x900
Case Dell Precision T3600 Chassis
Audio Device(s) Beyerdynamic DT770 Pro 80 // Fiio E7 Amp/DAC
Power Supply 630w Dell T3600 PSU
Mouse Logitech G700s/G502
Keyboard Logitech K740
Software Linux Mint 20
Benchmark Scores Network: APs: Cisco Meraki MR32, Ubiquiti Unifi AP-AC-LR and Lite Router/Sw:Meraki MX64 MS220-8P
So you've tried the gear for it?
 
Joined
Nov 16, 2007
Messages
1,166 (0.19/day)
Location
Hampton Roads
Processor Xeon x5650
Motherboard SABERTOOTH X58
Cooling Fans
Memory 24 GB Kingston HyperX 1600
Video Card(s) GTX 1060 3GB
Storage small ssd
Display(s) Dell 2001F, BenQ short throw
Case Lian Li
Audio Device(s) onboard
Power Supply X750
Software Mint 19.3, Win 10
Benchmark Scores not so fast...
not tried, ask the company. they said even though the equipment has the functionality, it is not enabled. I have a dcx-3200 cable box and a arris modem to use on their system. the dcx can be used as a modem too, but they wont let it. I have other modems, two 5120 surfboards that work perfectly, but they are not allowed on their system.

I did a bit of genius work though. I put the wifi router upstairs, too!

Edit...I own the modem, bought from craigslist, but they won't let me buy the cable box.
 
Last edited:
Joined
May 13, 2010
Messages
5,698 (1.12/day)
System Name RemixedBeast-NX
Processor Intel Xeon E5-2690 @ 2.9Ghz (8C/16T)
Motherboard Dell Inc. 08HPGT (CPU 1)
Cooling Dell Standard
Memory 24GB ECC
Video Card(s) Gigabyte Nvidia RTX2060 6GB
Storage 2TB Samsung 860 EVO SSD//2TB WD Black HDD
Display(s) Samsung SyncMaster P2350 23in @ 1920x1080 + Dell E2013H 20 in @1600x900
Case Dell Precision T3600 Chassis
Audio Device(s) Beyerdynamic DT770 Pro 80 // Fiio E7 Amp/DAC
Power Supply 630w Dell T3600 PSU
Mouse Logitech G700s/G502
Keyboard Logitech K740
Software Linux Mint 20
Benchmark Scores Network: APs: Cisco Meraki MR32, Ubiquiti Unifi AP-AC-LR and Lite Router/Sw:Meraki MX64 MS220-8P
what router do you got?
 
Joined
Nov 16, 2007
Messages
1,166 (0.19/day)
Location
Hampton Roads
Processor Xeon x5650
Motherboard SABERTOOTH X58
Cooling Fans
Memory 24 GB Kingston HyperX 1600
Video Card(s) GTX 1060 3GB
Storage small ssd
Display(s) Dell 2001F, BenQ short throw
Case Lian Li
Audio Device(s) onboard
Power Supply X750
Software Mint 19.3, Win 10
Benchmark Scores not so fast...
DIR-825 rev a1. Can't spend money on an Amp now :p

So far, its working great, I don't need to run the network downstairs hard wired.

This is how it goes now...

4g USB modem---win 7 ICS---ethernet into WAN of DIR-825---my house has wifi internet.

Tricky part...the comp serving the internet is also my file server, so I need a different connection to the network. Win 7 took forever trying to get the networks straight, but it did it! It uses a dwa-130 for the lan.

Im still curious about using modems connected to each other. Gonna try it later. I know where one modem is, gotta find the other.
 

Frick

Fishfaced Nincompoop
Joined
Feb 27, 2006
Messages
18,930 (2.85/day)
Location
Piteå
System Name Black MC in Tokyo
Processor Ryzen 5 5600
Motherboard Asrock B450M-HDV
Cooling Be Quiet! Pure Rock 2
Memory 2 x 16GB Kingston Fury 3400mhz
Video Card(s) XFX 6950XT Speedster MERC 319
Storage Kingston A400 240GB | WD Black SN750 2TB |WD Blue 1TB x 2 | Toshiba P300 2TB | Seagate Expansion 8TB
Display(s) Samsung U32J590U 4K + BenQ GL2450HT 1080p
Case Fractal Design Define R4
Audio Device(s) Line6 UX1 + some headphones, Nektar SE61 keyboard
Power Supply Corsair RM850x v3
Mouse Logitech G602
Keyboard Cherry MX Board 1.0 TKL Brown
VR HMD Acer Mixed Reality Headset
Software Windows 10 Pro
Benchmark Scores Rimworld 4K ready!
What sort of coax is it? What kind of speeds would you get?
 
Joined
Nov 16, 2007
Messages
1,166 (0.19/day)
Location
Hampton Roads
Processor Xeon x5650
Motherboard SABERTOOTH X58
Cooling Fans
Memory 24 GB Kingston HyperX 1600
Video Card(s) GTX 1060 3GB
Storage small ssd
Display(s) Dell 2001F, BenQ short throw
Case Lian Li
Audio Device(s) onboard
Power Supply X750
Software Mint 19.3, Win 10
Benchmark Scores not so fast...
Well, I'm no signal engineer, but the cable company can put 150 Mbs over it.

Edit. Its RG-6/U
 
Last edited:

Frick

Fishfaced Nincompoop
Joined
Feb 27, 2006
Messages
18,930 (2.85/day)
Location
Piteå
System Name Black MC in Tokyo
Processor Ryzen 5 5600
Motherboard Asrock B450M-HDV
Cooling Be Quiet! Pure Rock 2
Memory 2 x 16GB Kingston Fury 3400mhz
Video Card(s) XFX 6950XT Speedster MERC 319
Storage Kingston A400 240GB | WD Black SN750 2TB |WD Blue 1TB x 2 | Toshiba P300 2TB | Seagate Expansion 8TB
Display(s) Samsung U32J590U 4K + BenQ GL2450HT 1080p
Case Fractal Design Define R4
Audio Device(s) Line6 UX1 + some headphones, Nektar SE61 keyboard
Power Supply Corsair RM850x v3
Mouse Logitech G602
Keyboard Cherry MX Board 1.0 TKL Brown
VR HMD Acer Mixed Reality Headset
Software Windows 10 Pro
Benchmark Scores Rimworld 4K ready!
Just thought about data caps. There are usually data caps on mobile connections. I assume you have that checked, but still..
 
Joined
Nov 16, 2007
Messages
1,166 (0.19/day)
Location
Hampton Roads
Processor Xeon x5650
Motherboard SABERTOOTH X58
Cooling Fans
Memory 24 GB Kingston HyperX 1600
Video Card(s) GTX 1060 3GB
Storage small ssd
Display(s) Dell 2001F, BenQ short throw
Case Lian Li
Audio Device(s) onboard
Power Supply X750
Software Mint 19.3, Win 10
Benchmark Scores not so fast...
That's the main reason for the switch. Unlimited 4g speeds. Cable co has 125 GB if no other service present. 150 if bundled. And, standalone 12 up/ 1.5 down is $52. We are trying to cut the cord.
 
Joined
May 13, 2010
Messages
5,698 (1.12/day)
System Name RemixedBeast-NX
Processor Intel Xeon E5-2690 @ 2.9Ghz (8C/16T)
Motherboard Dell Inc. 08HPGT (CPU 1)
Cooling Dell Standard
Memory 24GB ECC
Video Card(s) Gigabyte Nvidia RTX2060 6GB
Storage 2TB Samsung 860 EVO SSD//2TB WD Black HDD
Display(s) Samsung SyncMaster P2350 23in @ 1920x1080 + Dell E2013H 20 in @1600x900
Case Dell Precision T3600 Chassis
Audio Device(s) Beyerdynamic DT770 Pro 80 // Fiio E7 Amp/DAC
Power Supply 630w Dell T3600 PSU
Mouse Logitech G700s/G502
Keyboard Logitech K740
Software Linux Mint 20
Benchmark Scores Network: APs: Cisco Meraki MR32, Ubiquiti Unifi AP-AC-LR and Lite Router/Sw:Meraki MX64 MS220-8P
4G "unlimited" might still have a FUP policy... some of those are as high as 150GB/mo and are as low as 5GB/mo or even lower. So check with the provider to see if there are any of those in effect.
 

de.das.dude

Pro Indian Modder
Joined
Jun 13, 2010
Messages
8,783 (1.73/day)
Location
Stuck in a PC. halp.
System Name Monke | Work Thinkpad| Old Monke
Processor Ryzen 5600X | Ryzen 5500U | FX8320
Motherboard ASRock B550 Extreme4 | ? | Asrock 990FX Extreme 4
Cooling 240mm Rad | Not needed | hyper 212 EVO
Memory 2x16GB DDR4 3600 Corsair RGB | 16 GB DDR4 3600 | 16GB DDR3 1600
Video Card(s) Sapphire Pulse RX6700XT 12GB | Vega 8 | Sapphire Pulse RX580 8GB
Storage Samsung 980 nvme (Primary) | some samsung SSD
Display(s) Dell 2723DS | Some 14" 1080p 98%sRGB IPS | Dell 2240L
Case Ant Esports Tempered case | Thinkpad | Antec
Audio Device(s) Logitech Z333 | Jabra corpo stuff
Power Supply Corsair RM750e | not needed | Corsair GS 600
Mouse Logitech G400 | nipple
Keyboard Logitech G213 | stock kb is awesome | Logitech K230
VR HMD ;_;
Software Windows 10 Professional x3
Benchmark Scores There are no marks on my bench
our digital cable comes through coax cables. i think they is good for a 100m.
 
Joined
Nov 16, 2007
Messages
1,166 (0.19/day)
Location
Hampton Roads
Processor Xeon x5650
Motherboard SABERTOOTH X58
Cooling Fans
Memory 24 GB Kingston HyperX 1600
Video Card(s) GTX 1060 3GB
Storage small ssd
Display(s) Dell 2001F, BenQ short throw
Case Lian Li
Audio Device(s) onboard
Power Supply X750
Software Mint 19.3, Win 10
Benchmark Scores not so fast...
4G "unlimited" might still have a FUP policy... some of those are as high as 150GB/mo and are as low as 5GB/mo or even lower. So check with the provider to see if there are any of those in effect.

http://appleinsider.com/articles/13...s-around-data-throttling-iphone-wi-fi-calling

I have truly unlimited no throttling on one of my devices, 2.5 GB on the others.

I'm doing an experiment now, to see if we can function on cell-only service. So far, it seems good.
 

Aquinus

Resident Wat-man
Joined
Jan 28, 2012
Messages
13,147 (2.94/day)
Location
Concord, NH, USA
System Name Apollo
Processor Intel Core i9 9880H
Motherboard Some proprietary Apple thing.
Memory 64GB DDR4-2667
Video Card(s) AMD Radeon Pro 5600M, 8GB HBM2
Storage 1TB Apple NVMe, 4TB External
Display(s) Laptop @ 3072x1920 + 2x LG 5k Ultrafine TB3 displays
Case MacBook Pro (16", 2019)
Audio Device(s) AirPods Pro, Sennheiser HD 380s w/ FIIO Alpen 2, or Logitech 2.1 Speakers
Power Supply 96w Power Adapter
Mouse Logitech MX Master 3
Keyboard Logitech G915, GL Clicky
Software MacOS 12.1
You know, the attenuation for a wi-fi signal over RG-6 is something like 30dB/100ft. If you're not going over 200ft, you should be able to send a 802.11n signal over coax with relatively little loss since the average house isn't that big.

I remembered seeing an article where someone did it and got full 802.11g speed over coax throughout his house but I can't find it anymore. It's a good solution if you're house isn't wi-fi friendly but you have coax in all the rooms you want internet in.

I'm not completely confident that it will work, some splitters might not let the 2.4ghz signal pass. If you're good at experimenting you might want to give it a try if you have a spare router sitting around.
 
Top